{"id":180,"date":"2026-10-08T00:00:00","date_gmt":"2026-10-07T20:30:00","guid":{"rendered":"https:\/\/www.anynet.ir\/blog\/%d9%82%d8%a7%d8%a8%d9%84%db%8c%d8%aa-rsvp-te-preemption-%d8%af%d8%b1-cisco-8000\/"},"modified":"2026-10-19T15:25:29","modified_gmt":"2026-10-19T11:55:29","slug":"%d9%82%d8%a7%d8%a8%d9%84%db%8c%d8%aa-rsvp-te-preemption-%d8%af%d8%b1-cisco-8000","status":"publish","type":"post","link":"https:\/\/www.anynet.ir\/blog\/%d9%82%d8%a7%d8%a8%d9%84%db%8c%d8%aa-rsvp-te-preemption-%d8%af%d8%b1-cisco-8000\/","title":{"rendered":"\u0642\u0627\u0628\u0644\u06cc\u062a RSVP-TE Preemption \u062f\u0631 Cisco 8000"},"content":{"rendered":"<p><!--?xml encoding=\"UTF-8\"--><meta charset=\"utf-8\"><meta name=\"viewport\" content=\"width=device-width, initial-scale=1, viewport-fit=cover\"><meta name=\"next-size-adjust\" content=\"\"><title>RSVP-TE Preemption on Cisco 8000 | 8000 Tutorial | XRdocs<\/title><meta name=\"description\" content=\"Learn how RSVP-TE hard and soft preemption work on Cisco 8000 through lab configurations, operational outputs, and bandwidth-deficit examples.\"><meta name=\"author\" content=\"Thomas Wang\"><meta name=\"keywords\" content=\"iosxr, cisco, Cisco 8000, MPLS-TE, RSVP-TE, soft-preemption\"><meta name=\"robots\" content=\"index, follow\"><meta property=\"og:title\" content=\"RSVP-TE Preemption on Cisco 8000\"><meta property=\"og:description\" content=\"Learn how RSVP-TE hard and soft preemption work on Cisco 8000 through lab configurations, operational outputs, and bandwidth-deficit examples.\"><meta property=\"og:url\" content=\"https:\/\/xrdocs.io\/8000\/tutorials\/rsvp-te-preemption-on-cisco-8000\"><meta property=\"og:site_name\" content=\"XRdocs\"><meta property=\"og:image\" content=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-1.webp\"><meta property=\"og:image:width\" content=\"1200\"><meta property=\"og:image:height\" content=\"630\"><meta property=\"og:image:alt\" content=\"RSVP-TE Preemption on Cisco 8000\"><meta property=\"og:type\" content=\"article\"><meta property=\"article:published_time\" content=\"2026-10-08 18:14 +0300\"><meta property=\"article:modified_time\" content=\"2026-10-08 18:14 +0300\"><meta property=\"article:author\" content=\"Thomas Wang\"><meta property=\"article:section\" content=\"8000\"><meta property=\"article:tag\" content=\"iosxr\"><meta property=\"article:tag\" content=\"cisco\"><meta property=\"article:tag\" content=\"Cisco 8000\"><meta property=\"article:tag\" content=\"MPLS-TE\"><meta property=\"article:tag\" content=\"RSVP-TE\"><meta property=\"article:tag\" content=\"soft-preemption\"><meta name=\"twitter:card\" content=\"summary_large_image\"><meta name=\"twitter:creator\" content=\"@xrdocs\"><meta name=\"twitter:title\" content=\"RSVP-TE Preemption on Cisco 8000\"><meta name=\"twitter:description\" content=\"Learn how RSVP-TE hard and soft preemption work on Cisco 8000 through lab configurations, operational outputs, and bandwidth-deficit examples.\"><meta name=\"twitter:image\" content=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-1.webp\"><\/p>\n<div>\n<div>\n<div>\n<h2 style=\"color: rgb(26, 26, 26); font-weight: 700; direction: rtl; text-align: right\">\u0645\u0631\u0648\u0631\u06cc \u0628\u0631 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption)<\/h2>\n<p style=\"direction: rtl; text-align: right\">\u067e\u0631\u0648\u062a\u06a9\u0644 \u0631\u0632\u0631\u0648 \u0645\u0646\u0627\u0628\u0639 \u0628\u0627 \u0627\u0641\u0632\u0648\u0646\u0647\u200c\u0647\u0627\u06cc \u0645\u0647\u0646\u062f\u0633\u06cc \u062a\u0631\u0627\u0641\u06cc\u06a9 (RSVP-TE) \u0627\u0632 \u0642\u0627\u0628\u0644\u06cc\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0628\u0647 \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc \u0633\u0648\u0626\u06cc\u0686\u06cc\u0646\u06af \u0628\u0631\u0686\u0633\u0628 (LSP) \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u0628\u0627\u0644\u0627\u062a\u0631 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc\u200c\u062f\u0647\u062f \u062f\u0631 \u0632\u0645\u0627\u0646 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0645\u0646\u0627\u0628\u0639\u060c \u0628\u0627 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u06cc \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u062f\u0627\u0631\u0627\u06cc \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631\u060c \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u062e\u0648\u062f \u0631\u0627 \u062a\u0623\u0645\u06cc\u0646 \u06a9\u0646\u0646\u062f. \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0633\u062e\u062a (Hard preemption) \u0645\u0633\u06cc\u0631 LSP \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u200c\u0634\u062f\u0647 \u0631\u0627 \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0622\u0632\u0627\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0645\u0646\u062c\u0631 \u0628\u0647 \u0648\u0642\u0641\u0647 \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0634\u0648\u062f. \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption) \u0628\u0647 \u0637\u0648\u0631 \u0645\u0648\u0642\u062a \u0627\u0631\u0633\u0627\u0644 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0631\u0627 \u0641\u0639\u0627\u0644 \u0646\u06af\u0647 \u0645\u06cc\u200c\u062f\u0627\u0631\u062f \u062a\u0627 \u0631\u0648\u062a\u0631 \u0644\u0628\u0647 \u0648\u0631\u0648\u062f\u06cc (Ingress LER) \u06cc\u06a9 \u0645\u0633\u06cc\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u0627\u0645\u0631 \u0628\u0627\u0639\u062b \u06a9\u0627\u0647\u0634 \u0627\u062e\u062a\u0644\u0627\u0644 \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\">\u0645\u0642\u0627\u062f\u06cc\u0631 \u0627\u0648\u0644\u0648\u06cc\u062a \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc \u0645\u0647\u0646\u062f\u0633\u06cc \u062a\u0631\u0627\u0641\u06cc\u06a9 (TE) \u062f\u0631 \u067e\u0631\u0648\u062a\u06a9\u0644 Multiprotocol Label Switching (MPLS) \u0627\u0632 0 (\u0628\u0627\u0644\u0627\u062a\u0631\u06cc\u0646) \u062a\u0627 7 (\u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631\u06cc\u0646) \u0645\u062a\u063a\u06cc\u0631 \u0627\u0633\u062a. \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc (Setup) \u0648 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc (Holding) \u0627\u062e\u062a\u0635\u0627\u0635\u200c\u06cc\u0627\u0641\u062a\u0647 \u0628\u0647 \u0647\u0631 LSP \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0622\u0646 LSP \u0686\u06af\u0648\u0646\u0647 \u062f\u0631 \u0641\u0631\u0622\u06cc\u0646\u062f \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0645\u0634\u0627\u0631\u06a9\u062a \u0645\u06cc\u200c\u06a9\u0646\u062f. \u06cc\u06a9 LSP \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u0628\u0627\u0644\u0627\u062a\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u06cc\u06a9 LSP \u0628\u0631\u0642\u0631\u0627\u0631 \u0634\u062f\u0647 \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u0634\u0648\u062f \u062a\u0627 \u062f\u0631 \u0635\u0648\u0631\u062a \u0639\u062f\u0645 \u06a9\u0641\u0627\u06cc\u062a \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0645\u0648\u062c\u0648\u062f \u062f\u0631 \u0644\u06cc\u0646\u06a9\u060c \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0627 \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u06a9\u0646\u062f.<\/p>\n<table style=\"direction: rtl; text-align: right\" class=\"english-numbers\">\n<thead>\n<tr>\n<th><strong style=\"color: rgb(26, 26, 26)\">\u0627\u0635\u0637\u0644\u0627\u062d<\/strong><\/th>\n<th><strong style=\"color: rgb(26, 26, 26)\">\u0647\u062f\u0641<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0627\u0648\u0644\u0648\u06cc\u062a \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc (Setup priority)<\/td>\n<td>\u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 LSP \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062f\u0631 \u062d\u06cc\u0646 \u0628\u0631\u0642\u0631\u0627\u0631\u06cc\u060c \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 LSP\u0647\u0627\u06cc \u0645\u0648\u062c\u0648\u062f \u0634\u0648\u062f \u06cc\u0627 \u062e\u06cc\u0631.<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0648\u0644\u0648\u06cc\u062a \u0646\u06af\u0647\u062f\u0627\u0631\u06cc (Holding priority)<\/td>\n<td>\u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u06cc\u06a9 LSP \u0628\u0631\u0642\u0631\u0627\u0631 \u0634\u062f\u0647 \u062a\u0627 \u0686\u0647 \u062d\u062f \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0634\u062f\u0646 \u0645\u0642\u0627\u0648\u0645\u062a \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/td>\n<\/tr>\n<tr>\n<td>\u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0633\u062e\u062a (Hard preemption)<\/td>\n<td>\u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 LSP \u062c\u0627\u0628\u062c\u0627 \u0634\u062f\u0647 \u0631\u0627 \u0642\u0637\u0639 \u06a9\u0631\u062f\u0647 \u0648 \u0631\u0632\u0631\u0648 \u0622\u0646 \u0631\u0627 \u0622\u0632\u0627\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/td>\n<\/tr>\n<tr>\n<td>\u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption)<\/td>\n<td>\u0627\u062c\u0627\u0632\u0647 \u0645\u06cc\u200c\u062f\u0647\u062f \u062a\u0627 \u0632\u0645\u0627\u0646 \u0628\u0631\u0642\u0631\u0627\u0631\u06cc \u06cc\u06a9 LSP \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u060c \u0627\u0631\u0633\u0627\u0644 \u062f\u0627\u062f\u0647\u200c\u0647\u0627 \u0628\u0647 \u0637\u0648\u0631 \u0645\u0648\u0642\u062a \u0627\u062f\u0627\u0645\u0647 \u06cc\u0627\u0628\u062f.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"direction: rtl; text-align: right\">\u062f\u0631 IOS XR MPLS-TE\u060c \u0647\u0631 \u062a\u0648\u0646\u0644 TE \u062f\u0627\u0631\u0627\u06cc \u06cc\u06a9 \u0627\u0648\u0644\u0648\u06cc\u062a \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc (Setup Priority) \u0648 \u06cc\u06a9 \u0627\u0648\u0644\u0648\u06cc\u062a \u0646\u06af\u0647\u062f\u0627\u0631\u06cc (Holding Priority) \u0627\u0633\u062a. \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 LSP \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u0628\u0627\u0644\u0627\u062a\u0631 \u0646\u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u06a9\u0627\u0641\u06cc \u0628\u0647 \u062f\u0633\u062a \u0622\u0648\u0631\u062f\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u06cc\u06a9 LSP \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u06a9\u0647 \u0627\u0632 \u0642\u0628\u0644 \u0628\u0631\u0642\u0631\u0627\u0631 \u0634\u062f\u0647 \u0627\u0633\u062a \u0631\u0627 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preempt) \u06a9\u0631\u062f\u0647 \u062a\u0627 \u0645\u0646\u0627\u0628\u0639 \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0631\u0627 \u062a\u0623\u0645\u06cc\u0646 \u06a9\u0646\u062f. \u062f\u0631 Cisco 8000\u060c \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption Algorithm) \u0647\u0646\u06af\u0627\u0645 \u0627\u06cc\u062c\u0627\u062f \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a. \u0631\u0641\u062a\u0627\u0631 \u0627\u06cc\u0646 \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u0628\u0647 \u0645\u06cc\u0632\u0627\u0646 \u06a9\u0645\u0628\u0648\u062f \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth Deficit) \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0631\u062f \u0648 \u0647\u062f\u0641 \u0622\u0646 \u0628\u0647 \u062d\u062f\u0627\u0642\u0644 \u0631\u0633\u0627\u0646\u062f\u0646 \u062a\u0639\u062f\u0627\u062f LSP\u0647\u0627 \u0648 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0627\u06cc\u062f \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0634\u0648\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-1.webp\" alt=\"A 100 Gbps link with seven lower-priority LSPs; a new 50 Gbps high-priority LSP causes ascending candidate selection followed by removal of two 5 Gbps LSPs.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f1: \u0645\u0646\u0637\u0642 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u062a\u0648\u0646\u0644 (Tunnel preemption) \u0648 \u0628\u0647\u0628\u0648\u062f \u0628\u06cc\u0634\u200c\u062c\u0647\u0634\u06cc (Overshoot refinement).<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0631\u0641\u062a\u0627\u0631 \u067e\u06cc\u0634\u200c\u0641\u0631\u0636 \u062f\u0631 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP-TE\u060c \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0633\u062e\u062a (Hard preemption) \u0627\u0633\u062a. \u0627\u06cc\u0646 \u062d\u0627\u0644\u062a \u0632\u0645\u0627\u0646\u06cc \u0645\u0646\u0627\u0633\u0628 \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646\u0627\u0628\u0639 \u0628\u0627\u06cc\u062f \u0628\u0647 \u062f\u0644\u06cc\u0644 \u0648\u062c\u0648\u062f \u0631\u0642\u0627\u0628\u062a \u0648\u0627\u0642\u0639\u06cc \u0628\u0631 \u0633\u0631 \u0645\u0646\u0627\u0628\u0639\u060c \u0641\u0648\u0631\u0627\u064b \u0628\u0627\u0632\u067e\u0633\u200c\u06af\u06cc\u0631\u06cc \u0634\u0648\u0646\u062f. \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption) \u0628\u0631\u0627\u06cc \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0634\u0628\u06a9\u0647 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a\u061b \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644\u060c \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 LSP\u0647\u0627 \u0628\u0627\u06cc\u062f \u067e\u06cc\u0634 \u0627\u0632 \u062e\u0627\u0631\u062c \u0634\u062f\u0646 \u06cc\u06a9 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633 \u0627\u0632 \u0633\u0631\u0648\u06cc\u0633\u060c \u0628\u062f\u0648\u0646 \u0627\u06cc\u062c\u0627\u062f \u0648\u0642\u0641\u0647 \u063a\u06cc\u0631\u0636\u0631\u0648\u0631\u06cc \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9\u060c \u0627\u0632 \u0622\u0646 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633 \u0645\u0646\u062a\u0642\u0644 \u0634\u0648\u0646\u062f. \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption) \u0647\u0645\u0686\u0646\u06cc\u0646 \u062f\u0631 \u0645\u062d\u06cc\u0637\u200c\u0647\u0627\u06cc \u062a\u0631\u0627\u0641\u06cc\u06a9\u06cc \u067e\u0648\u06cc\u0627 \u06a9\u0647 \u062f\u0631 \u0622\u0646\u200c\u0647\u0627 \u0642\u0627\u0628\u0644\u06cc\u062a \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u062e\u0648\u062f\u06a9\u0627\u0631 (Auto-bandwidth) \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc RSVP-TE \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0648 \u0627\u062d\u062a\u0645\u0627\u0644 \u0648\u0642\u0648\u0639 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0628\u06cc\u0634\u062a\u0631 \u0627\u0633\u062a\u060c \u06a9\u0627\u0631\u0628\u0631\u062f \u062f\u0627\u0631\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0633\u062e\u062a (Hard preemption)<\/strong>\u0631\u0641\u062a\u0627\u0631 \u0633\u0646\u062a\u06cc \u0627\u0633\u062a. LSP \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0642\u0637\u0639 \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u0628\u0647 LER \u0648\u0631\u0648\u062f\u06cc \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0633\u06cc\u06af\u0646\u0627\u0644\u200c\u062f\u0647\u06cc RSVP \u0627\u0637\u0644\u0627\u0639 \u062f\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0647\u062f-\u0627\u0646\u062f (Headend) \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0631\u0627\u06cc \u0628\u0631\u0642\u0631\u0627\u0631\u06cc \u06cc\u06a9 LSP \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u062f\u0631 \u06cc\u06a9 \u0645\u0633\u06cc\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0648\u0627\u062c\u062f \u0634\u0631\u0627\u06cc\u0637 \u062a\u0644\u0627\u0634 \u06a9\u0646\u062f. LSP \u062c\u0627\u0628\u062c\u0627 \u0634\u062f\u0647\u060c \u0631\u0632\u0631\u0648 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u062e\u0648\u062f \u0631\u0627 \u0622\u0632\u0627\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u0632 \u0622\u0646\u062c\u0627 \u06a9\u0647 \u0645\u0633\u06cc\u0631 \u062f\u0627\u062f\u0647 \u0642\u062f\u06cc\u0645\u06cc \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0642\u0628\u0644 \u0627\u0632 \u0622\u0645\u0627\u062f\u0647 \u0634\u062f\u0646 \u0645\u0633\u06cc\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0646\u0627\u067e\u062f\u06cc\u062f \u0634\u0648\u062f\u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u0633\u062a\u0647\u200c\u0647\u0627 \u062f\u0631 \u0637\u0648\u0644 \u0627\u06cc\u0646 \u0627\u0646\u062a\u0642\u0627\u0644 \u0627\u0632 \u062f\u0633\u062a \u0628\u0631\u0648\u0646\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\">\u0642\u0627\u0628\u0644\u06cc\u062a Soft preemption \u06a9\u0647 \u062f\u0631 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f RFC 5712 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0627\u0633\u062a\u060c \u0628\u0647 \u0645\u0646\u0638\u0648\u0631 \u06a9\u0627\u0647\u0634 \u0627\u062e\u062a\u0644\u0627\u0644 \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0645\u0639\u0631\u0641\u06cc \u0634\u062f. <a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc5712.html\" style=\"color: rgb(0, 102, 204)\">RFC 5712<\/a>\u060c \u0628\u0647 \u0645\u0646\u0638\u0648\u0631 \u06a9\u0627\u0647\u0634 \u0627\u062e\u062a\u0644\u0627\u0644 \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0645\u0639\u0631\u0641\u06cc \u0634\u062f. \u0628\u0647 \u062c\u0627\u06cc \u0642\u0637\u0639 \u0641\u0648\u0631\u06cc LSP \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u0627\u0646\u0647 (Preempted LSP)\u060c \u0634\u0628\u06a9\u0647 \u0628\u0647 LER \u0648\u0631\u0648\u062f\u06cc \u0633\u06cc\u06af\u0646\u0627\u0644 \u0645\u06cc\u200c\u062f\u0647\u062f \u06a9\u0647 LSP \u0628\u0627\u06cc\u062f \u062a\u063a\u06cc\u06cc\u0631 \u0645\u0633\u06cc\u0631 \u06cc\u0627\u0628\u062f\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc\u200c\u062f\u0647\u062f \u0627\u0631\u0633\u0627\u0644 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u0648\u0642\u062a \u0628\u0631\u0627\u06cc \u06cc\u06a9 \u062f\u0648\u0631\u0647 \u0642\u0627\u0628\u0644 \u062a\u0646\u0638\u06cc\u0645 \u0627\u062f\u0627\u0645\u0647 \u06cc\u0627\u0628\u062f.<\/p>\n<h2 style=\"color: rgb(26, 26, 26); font-weight: 700; direction: rtl; text-align: right\">\u062a\u0645\u0631\u06cc\u0646\u0627\u062a \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption)<\/h2>\n<p style=\"direction: rtl; text-align: right\">\u0627\u06cc\u0646 \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647 \u0627\u0632 \u06cc\u06a9 \u0631\u0648\u062a\u0631 Cisco 8223 (\u0645\u062f\u0644 8223-64EF-M) \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0645\u0628\u062a\u0646\u06cc \u0628\u0631 \u062a\u0631\u0627\u0634\u0647 P200 ASIC \u0628\u0648\u062f\u0647 \u0648 \u0633\u06cc\u0633\u062a\u0645\u200c\u0639\u0627\u0645\u0644 IOS XR \u0646\u0633\u062e\u0647 26.2.1 \u0631\u0627 \u0627\u062c\u0631\u0627 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u062a\u0645\u0627\u0645\u06cc \u0644\u06cc\u0646\u06a9\u200c\u0647\u0627\u06cc \u0631\u0648\u062a\u0631 \u06a9\u0647 \u0628\u0647 \u0633\u0645\u062a \u0647\u0633\u062a\u0647 \u0634\u0628\u06a9\u0647 (Core-facing) \u0647\u0633\u062a\u0646\u062f\u060c \u0627\u0632 \u0646\u0648\u0639 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633\u200c\u0647\u0627\u06cc \u0628\u0627\u0646\u062f\u0644 (Bundle interfaces) \u0628\u0648\u062f\u0647 \u0648 \u0627\u0633\u062a\u062e\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth pool) \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP \u0628\u0631\u0627\u06cc \u0638\u0631\u0641\u06cc\u062a \u06a9\u0627\u0645\u0644 \u0644\u06cc\u0646\u06a9 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a. \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc RSVP-TE LSP \u0628\u0627 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0633\u06cc\u06af\u0646\u0627\u0644\u200c\u062f\u0647\u06cc \u0634\u062f\u0647 \u0627\u0648\u0644\u06cc\u0647 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u062e\u0637 \u0645\u0628\u0646\u0627 (Baseline) \u0628\u0631\u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u0642\u0627\u0628\u0644\u06cc\u062a \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u062e\u0648\u062f\u06a9\u0627\u0631 (Auto-bandwidth) \u0628\u0631\u0627\u06cc \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc RSVP-TE \u0641\u0639\u0627\u0644 \u0627\u0633\u062a \u0648 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627 \u062a\u0648\u0633\u0637 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0645\u062c\u062f\u062f \u0631\u0648\u062a\u0631 \u06cc\u0627 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0648\u0636\u0639\u06cc\u062a \u0644\u06cc\u0646\u06a9 (Link-status) \u062a\u062d\u0631\u06cc\u06a9 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\">\u0634\u0628\u06a9\u0647\u200c\u0627\u06cc \u0627\u0632 \u0645\u0634\u062a\u0631\u06cc \u0631\u0627 \u062f\u0631 \u0646\u0638\u0631 \u0628\u06af\u06cc\u0631\u06cc\u062f \u06a9\u0647 \u062f\u0631 \u0622\u0646 MPLS-TE \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0637\u0628\u0642\u0647\u200c\u0628\u0646\u062f\u06cc\u200c\u0634\u062f\u0647 \u0631\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u062a\u0648\u0646\u0644 LSP \u0645\u0648\u0631\u062f \u0646\u0638\u0631 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u06a9\u0627\u0641\u06cc \u0628\u0631\u0627\u06cc \u0628\u0631\u0622\u0648\u0631\u062f\u0647 \u06a9\u0631\u062f\u0646 \u062a\u0645\u0627\u0645 \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u062a\u0648\u0646\u0644 \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u060c \u06a9\u0648\u062a\u0627\u0647\u200c\u062a\u0631\u06cc\u0646 \u0645\u0633\u06cc\u0631 \u062a\u0631\u062c\u06cc\u062d \u062f\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u062f\u0631 \u062a\u0648\u067e\u0648\u0644\u0648\u0698\u06cc \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc\u060c \u062a\u0645\u0627\u0645 \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0627\u0632 \u0631\u0648\u062a\u0631 \u0644\u0628\u0647 \u0627\u0631\u0627\u0626\u0647\u200c\u062f\u0647\u0646\u062f\u0647 (PE) \u06cc\u0639\u0646\u06cc PE1 \u0645\u0646\u0634\u0623 \u0645\u06cc\u200c\u06af\u06cc\u0631\u0646\u062f\u060c \u062f\u0631 \u0627\u0628\u062a\u062f\u0627 \u0627\u0632 \u06a9\u0648\u062a\u0627\u0647\u200c\u062a\u0631\u06cc\u0646 \u0645\u0633\u06cc\u0631 \u0631\u0648\u06cc \u0644\u06cc\u0646\u06a9 \u0645\u0633\u062a\u0642\u06cc\u0645 \u0628\u0647 PE2 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u0627\u06af\u0631 \u0627\u062a\u0635\u0627\u0644 \u0645\u0633\u062a\u0642\u06cc\u0645 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u06a9\u0627\u0641\u06cc \u0646\u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u060c \u0628\u0631\u062e\u06cc \u0627\u0632 \u062a\u0648\u0646\u0644\u200c\u0647\u0627 \u0628\u0627\u06cc\u062f \u0627\u0632 \u0645\u0633\u06cc\u0631 \u0637\u0648\u0644\u0627\u0646\u06cc\u200c\u062a\u0631\u06cc \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0631\u0648\u062a\u0631 \u0647\u0633\u062a\u0647 (Core Router) \u0628\u0631\u0627\u06cc \u0631\u0633\u06cc\u062f\u0646 \u0628\u0647 PE2 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u0646\u062f. \u0631\u0648\u062a\u0631\u0647\u0627\u06cc PE1 \u0648 PE2 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0644\u0628\u0647 \u0627\u0631\u0627\u0626\u0647\u200c\u062f\u0647\u0646\u062f\u0647 (Provider Edge)\u060c \u0631\u0648\u062a\u0631 P1 \u0631\u0648\u062a\u0631 \u0647\u0633\u062a\u0647 \u0627\u0631\u0627\u0626\u0647\u200c\u062f\u0647\u0646\u062f\u0647 (Provider Core) \u0648 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc CE1 \u0648 CE2 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0644\u0628\u0647 \u0645\u0634\u062a\u0631\u06cc (Customer Edge) \u0647\u0633\u062a\u0646\u062f. \u0645\u0633\u06cc\u0631 \u0646\u0627\u0631\u0646\u062c\u06cc \u0627\u0632 \u0644\u06cc\u0646\u06a9 \u0645\u0633\u062a\u0642\u06cc\u0645 BE200 \u0648 \u0645\u0633\u06cc\u0631 \u0633\u0628\u0632 \u0627\u0632 BE400 \u0648 BE500 \u0627\u0632 \u0637\u0631\u06cc\u0642 P1 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-2.webp\" alt=\"CE1 connects to PE1, CE2 connects to PE2, and core router P1 provides an alternative route between PE1 and PE2. Orange denotes BE200; green denotes BE400 and BE500.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f2: \u062a\u0648\u067e\u0648\u0644\u0648\u0698\u06cc \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc \u0628\u0627 \u0645\u0633\u06cc\u0631 \u0645\u0633\u062a\u0642\u06cc\u0645 BE200 \u0648 \u0645\u0633\u06cc\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 BE400\/BE500.<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\">\u067e\u06cc\u0634\u200c\u062e\u0631\u06cc\u062f (Preemption) \u062f\u0631 \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP-TE \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062f\u0631 \u062f\u0648 \u0633\u0646\u0627\u0631\u06cc\u0648\u06cc \u0631\u0627\u06cc\u062c \u0641\u0639\u0627\u0644 \u0634\u0648\u062f:<\/p>\n<ul>\n<li style=\"direction: rtl; text-align: right\">\u0648\u0631\u0648\u062f \u06cc\u06a9 \u0631\u0632\u0631\u0648 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u062c\u062f\u06cc\u062f \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a\u06cc \u0628\u0627\u0644\u0627\u062a\u0631 \u0627\u0632 \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0645\u0648\u062c\u0648\u062f.<\/li>\n<li style=\"direction: rtl; text-align: right\">\u06a9\u0627\u0647\u0634 \u062f\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0644\u06cc\u0646\u06a9 \u0645\u0648\u062c\u0648\u062f\u2014\u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644\u060c \u0628\u0647 \u062f\u0644\u06cc\u0644 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u062f\u0631 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0627\u0633\u062a\u062e\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth-pool) \u062f\u0631 RSVP \u06cc\u0627 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc \u067e\u0648\u06cc\u0627 \u0645\u0627\u0646\u0646\u062f \u0646\u0648\u0633\u0627\u0646\u0627\u062a \u0644\u06cc\u0646\u06a9\u200c\u0647\u0627\u06cc \u0639\u0636\u0648 \u062f\u0631 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633\u200c\u0647\u0627\u06cc \u0628\u0627\u0646\u062f\u0644 (bundle-interface member-link flaps).<\/li>\n<\/ul>\n<p style=\"direction: rtl; text-align: right\">\u062f\u0631 \u0645\u062b\u0627\u0644 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u0627\u0646\u0647 \u0646\u0631\u0645 (soft-preemption)\u060c \u062a\u0648\u0646\u0644 hiPRI \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc\/\u0646\u06af\u0647\u062f\u0627\u0631\u06cc (setup\/holding priorities) \u06f1\/\u06f1 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc midPRI1\u060c midPRI2 \u0648 midPRI3 \u0627\u0632 \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc\/\u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u06f3\/\u06f3 \u0628\u0627 \u0642\u0627\u0628\u0644\u06cc\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u0627\u0646\u0647 \u0646\u0631\u0645 (soft preemption) \u0641\u0639\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u062f\u0631 \u0627\u0628\u062a\u062f\u0627\u060c \u062a\u0645\u0627\u0645 \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc PE1 \u06a9\u0648\u062a\u0627\u0647\u200c\u062a\u0631\u06cc\u0646 \u0645\u0633\u06cc\u0631 \u0631\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0628\u0627\u0646\u062f\u0644 BE200 \u0628\u0647 \u0633\u0645\u062a PE2 \u0637\u06cc \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-3.webp\" alt=\"Four tunnels initially use BE200: hiPRI reserves 15 Gbps and midPRI1, midPRI2 and midPRI3 each reserve 100 Gbps. The screenshot includes hiPRI, midPRI1 and midPRI2 configurations.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f3: \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0627\u0648\u0644\u06cc\u0647 \u062a\u0648\u0646\u0644 \u0648 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u0627\u0646\u0647 \u0646\u0631\u0645 (soft-preemption) \u0646\u0645\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647.<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0648\u0636\u0639\u06cc\u062a \u0627\u0648\u0644\u06cc\u0647 \u062a\u0648\u0646\u0644 (Tunnel state)<\/strong><\/p>\n<pre><code><span>RP\/0\/RP0\/CPU0:PE1#show mpls traffic-eng tunnels tabular role head\n<\/span><span> Tunnel LSP Destination Source Tun FRR LSP Path\n<\/span><span> Name ID Address Address State State Role Prot\n<\/span><span>------------------------------------------------------------\n<\/span><span> hiPRI 51 5.5.5.5 2.2.2.2 up Inact Head Inact\n<\/span><span>midPRI1 23 5.5.5.5 2.2.2.2 up Inact Head Inact\n<\/span><span>midPRI2 33 5.5.5.5 2.2.2.2 up Inact Head Inact\n<\/span><span>midPRI3 37 5.5.5.5 2.2.2.2 up Inact Head Inact\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0627\u0648\u0644\u06cc\u0647 RSVP<\/strong><\/p>\n<pre><code><span>RP\/0\/RP0\/CPU0:PE1#show rsvp reservation destination 5.5.5.5\n<\/span><span>Destination Add DPort Source Add SPort Pro Input IF Sty Serv Rate Burst\n<\/span><span>--------------- ----- ---------- ----- --- -------- --- ---- ---- -----\n<\/span><span> 5.5.5.5 32768 2.2.2.2 51 0 BE200 SE LOAD 15G 1K\n<\/span><span> 5.5.5.5 32856 2.2.2.2 23 0 BE200 SE LOAD 100G 1K\n<\/span><span> 5.5.5.5 32857 2.2.2.2 33 0 BE200 SE LOAD 100G 1K\n<\/span><span> 5.5.5.5 32858 2.2.2.2 37 0 BE200 SE LOAD 100G 1K\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc hiPRI<\/strong><\/p>\n<pre><code><span>mpls traffic-eng\n<\/span><span> named-tunnels\n<\/span><span> tunnel-te hiPRI\n<\/span><span> path-option 100\n<\/span><span> preference 10\n<\/span><span> computation dynamic\n<\/span><span>!\n<\/span><span> source 2.2.2.2\n<\/span><span> auto-bw\n<\/span><span> bw-limit min 100 max 400000000\n<\/span><span> overflow threshold 30 min 10 limit 2\n<\/span><span> adjustment-threshold 3 min 25000\n<\/span><span> underflow threshold 10 min 10 limit 4\n<\/span><span> application 900\n<\/span><span>!\n<\/span><span>!\n<\/span><span> logging events all\n<\/span><span> priority 1 1\n<\/span><span> signalled-bandwidth 15000000\n<\/span><span> autoroute announce\n<\/span><span>!\n<\/span><span> destination 5.5.5.5\n<\/span><span> fast-reroute\n<\/span><span> soft-preemption\n<\/span><span> forward-class 6\n<\/span><span>!\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc midPRI1 \u0648 midPRI2<\/strong><\/p>\n<pre><code><span>mpls traffic-eng\n<\/span><span> named-tunnels\n<\/span><span> tunnel-te midPRI1\n<\/span><span> path-option 100\n<\/span><span> preference 10\n<\/span><span> computation dynamic\n<\/span><span> source 2.2.2.2\n<\/span><span> logging events all\n<\/span><span> priority 3 3\n<\/span><span> signalled-bandwidth 100000000\n<\/span><span> autoroute announce metric 10\n<\/span><span> destination 5.5.5.5\n<\/span><span> fast-reroute protect node\n<\/span><span> soft-preemption\n<\/span><span> forward-class 1\n<\/span><span>!\n<\/span><span> tunnel-te midPRI2\n<\/span><span> path-option 100\n<\/span><span> preference 10\n<\/span><span> computation dynamic\n<\/span><span>!\n<\/span><span> source 2.2.2.2\n<\/span><span> logging events all\n<\/span><span> priority 3 3\n<\/span><span> signalled-bandwidth 100000000\n<\/span><span> autoroute announce metric 10\n<\/span><span> destination 5.5.5.5\n<\/span><span> fast-reroute protect node\n<\/span><span> soft-preemption\n<\/span><span> forward-class 2\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\">\u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u062a\u0648\u0646\u0644 \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u0628\u0627\u0644\u0627\u06cc hiPRI \u0631\u0632\u0631\u0648 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u062e\u0648\u062f \u0631\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u0645\u06cc\u200c\u062f\u0647\u062f \u0648 \u0627\u0645\u06a9\u0627\u0646 \u067e\u0630\u06cc\u0631\u0634 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0628\u0627 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0645\u0648\u062c\u0648\u062f \u0648\u062c\u0648\u062f \u0646\u062f\u0627\u0631\u062f\u060c \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP \u0628\u0627\u06cc\u062f \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0645\u062d\u0644\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u0631\u0627 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preempt) \u06a9\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c hiPRI \u0631\u0632\u0631\u0648 \u062e\u0648\u062f \u0631\u0627 \u0628\u0647 400G \u0627\u0641\u0632\u0627\u06cc\u0634 \u0645\u06cc\u200c\u062f\u0647\u062f \u06a9\u0647 \u0628\u0627\u0639\u062b \u0627\u062a\u0645\u0627\u0645 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0645\u0648\u062c\u0648\u062f \u062f\u0631 \u0644\u06cc\u0646\u06a9 \u06a9\u0648\u062a\u0627\u0647\u200c\u062a\u0631\u06cc\u0646 \u0645\u0633\u06cc\u0631 BE200 \u0645\u06cc\u200c\u0634\u0648\u062f. \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u06cc\u0639\u0646\u06cc midPRI1\u060c midPRI2 \u0648 midPRI3 \u0628\u0647 \u0635\u0648\u0631\u062a \u0646\u0631\u0645 (Soft-preempted) \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u0631\u0648\u062a\u0631 \u0644\u0628\u0647 \u0648\u0631\u0648\u062f\u06cc (Ingress LER) \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0645\u0633\u06cc\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0637\u0648\u0644\u0627\u0646\u06cc\u200c\u062a\u0631 (\u0628\u0627\u0646\u062f\u0644 BE400) \u0648 \u0627\u0632 \u0637\u0631\u06cc\u0642 P1 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u06a9\u0627\u0646\u06cc\u0632\u0645 make-before-break \u0645\u0633\u06cc\u0631\u06cc\u0627\u0628\u06cc \u0645\u062c\u062f\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u0627\u0645\u0631 \u0627\u0645\u06a9\u0627\u0646 \u062a\u062f\u0627\u0648\u0645 \u0627\u0631\u0633\u0627\u0644 \u062f\u0627\u062f\u0647\u200c\u0647\u0627 \u0631\u0627 \u062f\u0631 \u062d\u06cc\u0646 \u0627\u0646\u062a\u0642\u0627\u0644 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u200c\u0633\u0627\u0632\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-4.webp\" alt=\"hiPRI is increased to 400 Gbps. The preemption log identifies three 100 Gbps soft-preempted LSPs; forwarding output places hiPRI on BE200 and the three midPRI tunnels on BE400.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f4: \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0633\u062a\u06cc \u0631\u0632\u0631\u0648 (Reservation)\u060c \u0642\u0631\u0628\u0627\u0646\u06cc\u0627\u0646 \u0627\u0646\u062a\u062e\u0627\u0628\u200c\u0634\u062f\u0647 \u0648 \u0631\u0627\u0628\u0637\u200c\u0647\u0627\u06cc (Interfaces) \u0641\u0648\u0631\u0648\u0627\u0631\u062f\u06cc\u0646\u06af.<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0627\u0633\u062a\u062e\u0631 \u0642\u0627\u0628\u0644 \u0631\u0632\u0631\u0648 (Reservable pool) \u0648 \u062a\u0631\u06cc\u06af\u0631 \u062f\u0633\u062a\u06cc (Manual trigger)<\/strong><\/p>\n<pre><code><span>rsvp\n<\/span><span> interface Bundle-Ether200\n<\/span><span> bandwidth 400000000\n<\/span><span>!\n<\/span><span>RP\/0\/RP0\/CPU0:PE1(config)#mpls traffic-eng named-tunnels tunnel-te hiPRI\n<\/span><span>signalled-bandwidth 400000000\n<\/span><span>PE1(config)#commit\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0644\u0627\u06af \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption log)<\/strong><\/p>\n<pre><code><span>RP\/0\/RP0\/CPU0:PE1#show mpls traffic preemption log\n<\/span><span>Higher Priority Tunnel Setup over Bundle-Ether200 at 07\/13\/2026 10:39:35\n<\/span><span> TunID: 32768, LSP ID: 52, Src: 2.2.2.2, Dest: 5.5.5.5\n<\/span><span> BW: 400000000 kbps (CT0), Priority: 1\/1\n<\/span><span> Before preemption, available BW (BC0\/BC1): 100000000\/0 kbps\n<\/span><span> BW Overshoot (BC0\/BC1): 0\/0 kbps\n<\/span><span> Preempted BW (BC0\/BC1): 300000000\/0 kbps;\n<\/span><span> Soft 300000000\/0 kbps; Hard 0\/0 kbps; FRRSoft 0\/0 kbps;\n<\/span><span> Preempted 3 tunnels, 3 LSPs;\n<\/span><span> Soft 3 tunnels, 3 LSPs; Hard 0 tunnels, 0 LSPs;\n<\/span><span> FRRSoft 0 tunnels, 0 LSPs\n<\/span><span> TunID LSP ID Source Destination Preempt Pri Bandwidth BW Type\n<\/span><span> Type S\/H (in kbps)\n<\/span><span>------------------------------------------------------------------\n<\/span><span> 32856 23 2.2.2.2 5.5.5.5 Soft 3\/3 100000000 BC0\n<\/span><span> 32857 33 2.2.2.2 5.5.5.5 Soft 3\/3 100000000 BC0\n<\/span><span> 32858 37 2.2.2.2 5.5.5.5 Soft 3\/3 100000000 BC0\n<\/span><span> * - LSPs bandwidth is already preempted.\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0631\u0627\u0628\u0637\u200c\u0647\u0627\u06cc \u0627\u0631\u0633\u0627\u0644 (Forwarding interfaces) \u067e\u0633 \u0627\u0632 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption)<\/strong><\/p>\n<pre><code><span>RP\/0\/RP0\/CPU0:PE1#show mpls forwarding tunnels name hiPRI\n<\/span><span>Tunnel Outgoing Outgoing Next Hop Bytes\n<\/span><span>Name Label Interface Switched\n<\/span><span>------------------------- -------- ----------- ---------- ----------\n<\/span><span>hiPRI Pop BE200 25.2.1.1 0\n<\/span><span>RP\/0\/RP0\/CPU0:PE1#show mpls forwarding tunnels name midPRI1\n<\/span><span>Tunnel Outgoing Outgoing Next Hop Bytes\n<\/span><span>Name Label Interface Switched\n<\/span><span>------------------------- -------- ----------- ---------- ----------\n<\/span><span>midPRI1 24004 BE400 24.1.1.1 0\n<\/span><span>RP\/0\/RP0\/CPU0:PE1#show mpls forwarding tunnels name midPRI2\n<\/span><span>Tunnel Outgoing Outgoing Next Hop Bytes\n<\/span><span>Name Label Interface Switched\n<\/span><span>------------------------- -------- ----------- ---------- ----------\n<\/span><span>midPRI2 24012 BE400 24.1.1.1 0\n<\/span><span>RP\/0\/RP0\/CPU0:PE1#show mpls forwarding tunnels name midPRI3\n<\/span><span>Tunnel Outgoing Outgoing Next Hop Bytes\n<\/span><span>Name Label Interface Switched\n<\/span><span>------------------------- -------- ----------- ---------- ----------\n<\/span><span>midPRI3 24034 BE400 24.1.1.1 0\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\">\u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0633\u06cc\u06af\u0646\u0627\u0644\u200c\u062f\u0647\u06cc RSVP-TE \u062a\u0639\u06cc\u06cc\u0646 \u0648 \u0627\u0639\u0644\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u0627\u0648\u0644\u0648\u06cc\u062a \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc (Setup Priority) \u0645\u0633\u06cc\u0631 LSP \u062f\u0631\u062e\u0648\u0627\u0633\u062a\u200c\u06a9\u0646\u0646\u062f\u0647 \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u0646\u06af\u0647\u062f\u0627\u0631\u06cc (Holding Priority) \u0645\u0633\u06cc\u0631 LSP \u0628\u0631\u0642\u0631\u0627\u0631 \u0634\u062f\u0647 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP-TE \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc \u0648 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0631\u0627 \u062f\u0631 \u0634\u06cc\u0621 SESSION_ATTRIBUTE \u0627\u0632 \u067e\u06cc\u0627\u0645\u200c\u0647\u0627\u06cc PATH\u060c \u0645\u0637\u0627\u0628\u0642 \u0628\u0627 \u062a\u0639\u0631\u06cc\u0641 \u062f\u0631 <a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc3209.html\" style=\"color: rgb(0, 102, 204)\">RFC 3209<\/a>. \u0628\u0631\u0627\u06cc \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0627\u0632 \u0631\u062f\u06cc\u0627\u0628\u06cc \u062a\u0627\u0631\u06cc\u062e\u0686\u0647 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc\u060c \u0645\u062f\u06cc\u0631\u06cc\u062a \u0644\u06cc\u0646\u06a9\u060c \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0622\u0632\u0627\u062f \u0634\u062f\u0647 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0631\u0627 \u062b\u0628\u062a \u0645\u06cc\u200c\u06a9\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0646\u0645\u0648\u0646\u0647 \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft-preemption)\u060c \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0648 \u062a\u0639\u062f\u0627\u062f \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc LSP \u06a9\u0647 \u0628\u0647 \u0635\u0648\u0631\u062a \u0646\u0631\u0645 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0634\u062f\u0647 \u0648 \u0627\u0632 \u0644\u06cc\u0646\u06a9 \u0645\u062d\u0644\u06cc \u0628\u0647 \u0645\u0633\u06cc\u0631 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u0633\u06cc\u0631 \u062f\u0627\u062f\u0647\u200c\u0627\u0646\u062f \u0631\u0627 \u0631\u062f\u06cc\u0627\u0628\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-5.webp\" alt=\"Soft-preemption accounting shows 300 Gbps released. The counter example shows one event, three preempted and reoptimized LSPs, a corrected zero timeout count, and 10-second pending times.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f5: \u0646\u0645\u0648\u0646\u0647 \u062a\u0635\u0648\u06cc\u0631\u06cc \u0627\u0635\u0644\u0627\u062d\u200c\u0634\u062f\u0647 \u0627\u0632 \u0645\u062d\u0627\u0633\u0628\u0647 \u0648 \u0634\u0645\u0627\u0631\u0646\u062f\u0647\u200c\u0647\u0627\u06cc (Counters) \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft-preemption).<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\">\u062e\u0631\u0648\u062c\u06cc \u0631\u062f\u06cc\u0627\u0628\u06cc\u060c \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u0627\u0635\u0644\u0627\u062d\u200c\u0634\u062f\u0647 \u0648 \u06af\u0648\u06cc\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0645\u0637\u0627\u0644\u0628 \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc \u0627\u0635\u0644\u06cc \u0627\u0633\u062a. \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0632\u0645\u0627\u0646 \u067e\u0627\u06cc\u0627\u0646 (Timeout counter) \u0627\u0635\u0644\u0627\u062d \u0634\u062f\u061b \u0627\u06cc\u0646 \u0631\u0642\u0645 \u0646\u0634\u0627\u0646\u200c\u062f\u0647\u0646\u062f\u0647 \u06cc\u06a9 \u0627\u062c\u0631\u0627\u06cc \u0622\u0632\u0645\u0627\u06cc\u0634\u06cc \u062c\u062f\u06cc\u062f \u0646\u06cc\u0633\u062a.<\/p>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0645\u062d\u0627\u0633\u0628\u0647 \u0644\u06cc\u0646\u06a9 \u0628\u0627 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645\u200c\u0627\u0641\u0632\u0627\u0631\u06cc (Soft-preemption link accounting)<\/strong><\/p>\n<pre><code><span>RP\/0\/RP0\/CPU0:PE1#show mpls traffic link-management soft-preemption interface be200\n<\/span><span>Soft-preemption Global Information:\n<\/span><span> State: Enabled\n<\/span><span> Timeout Interval: 30 seconds\n<\/span><span>Name: Bundle-Ether200; IPv4 Address: 25.1.1.2\n<\/span><span>Total Soft Preempted Bandwidth (BC0\/BC1) kbps: 300000000\/0\n<\/span><span>Currently Soft Preempted Bandwidth (BC0\/BC1) kbps: 0\/0\n<\/span><span>Released Soft Preempted Bandwidth (BC0\/BC1) kbps: 300000000\/0\n<\/span><span>Currently Over-subscribed Bandwidth (BC0\/BC1) kbps: 0\/0\n<\/span><span>Currently Soft Preempted Tunnels: 0 tunnels\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\"><strong style=\"color: rgb(26, 26, 26)\">\u0634\u0645\u0627\u0631\u0646\u062f\u0647\u200c\u0647\u0627\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u0627\u0646\u0647 \u0646\u0631\u0645\u200c\u0627\u0641\u0632\u0627\u0631\u06cc (Soft-preemption counters)<\/strong><\/p>\n<pre><code><span>RP\/0\/RP0\/CPU0:PE1#show mpls traffic-eng counter soft-preemption\n<\/span><span>Soft-preemption Global Counters:\n<\/span><span> Last Cleared: Never\n<\/span><span> Preemption Node Stats:\n<\/span><span> Number of soft preemption events: 1\n<\/span><span> Number of soft preempted LSPs: 3\n<\/span><span> Number of soft preempted LSPs that timed out: 0\n<\/span><span> Number of soft preempted LSPs that were torn down: 0\n<\/span><span> Number of soft preempted LSPs that were fast rerouted: 0\n<\/span><span> Minimum Time in Soft Preemption Pending State (sec): 10\n<\/span><span> Maximum Time in Soft Preemption Pending State (sec): 10\n<\/span><span> Average Time in Soft Preemption Pending State (sec): 10\n<\/span><span> Headend Stats:\n<\/span><span> Number of soft preempted LSPs: 3\n<\/span><span> Number of reoptimized soft preempted headend-LSPs: 3\n<\/span><span> Number of path protected switchover soft preempted headend-LSPs: 0\n<\/span><span> Number of torn down soft preempted headend-LSPs: 0\n<\/span><\/code><\/pre>\n<p style=\"direction: rtl; text-align: right\">\u0642\u0627\u0628\u0644\u06cc\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0632\u0645\u0627\u0646\u06cc \u0641\u0639\u0627\u0644 \u0634\u0648\u062f \u06a9\u0647 \u0627\u0633\u062a\u062e\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0644\u06cc\u0646\u06a9 MPLS \u06a9\u0627\u0647\u0634 \u06cc\u0627\u0628\u062f\u061b \u0627\u06cc\u0646 \u0627\u0645\u0631 \u06cc\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u062f\u0633\u062a\u06cc \u06cc\u06a9 \u0627\u0633\u062a\u062e\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u06a9\u0648\u0686\u06a9\u200c\u062a\u0631 \u0648 \u06cc\u0627 \u0628\u0647 \u062f\u0644\u06cc\u0644 \u0646\u0648\u0633\u0627\u0646\u0627\u062a \u0644\u06cc\u0646\u06a9\u200c\u0647\u0627\u06cc \u0639\u0636\u0648 \u062f\u0631 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633\u200c\u0647\u0627\u06cc \u062f\u0633\u062a\u0647\u200c\u0627\u06cc (Bundle-interface) \u0631\u062e \u0645\u06cc\u200c\u062f\u0647\u062f. \u062f\u0631 \u0647\u0631 \u062f\u0648 \u062d\u0627\u0644\u062a\u060c \u06a9\u0627\u0647\u0634 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0645\u0648\u062c\u0648\u062f \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0641\u0639\u0644\u06cc \u0631\u0627 \u063a\u06cc\u0631\u0645\u0645\u06a9\u0646 \u0633\u0627\u0632\u062f \u06a9\u0647 \u0645\u0646\u062c\u0631 \u0628\u0647 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u0648 \u062f\u0631 \u0635\u0648\u0631\u062a \u0641\u0639\u0627\u0644 \u0628\u0648\u062f\u0646 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption)\u060c \u0645\u0633\u06cc\u0631\u06cc\u0627\u0628\u06cc \u0645\u062c\u062f\u062f \u0622\u0646\u200c\u0647\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0627\u06cc\u0645\u0646 (Gracefully) \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\">Cisco 8000 \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u062f\u0631 RSVP-TE \u0631\u0627 \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f \u062a\u0627 \u0627\u062e\u062a\u0644\u0627\u0644 \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0648 \u062a\u0639\u062f\u0627\u062f LSP\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0627\u06cc\u062f \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0634\u0648\u0646\u062f\u060c \u0628\u0647 \u062d\u062f\u0627\u0642\u0644 \u0628\u0631\u0633\u062f. \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06a9\u0627\u0647\u0634 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u062f\u0631 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633\u0650 \u0628\u0627\u0646\u062f\u0644\u0650 \u0634\u0628\u06a9\u0647 \u0647\u0633\u062a\u0647 (Core-network bundle-interface)\u060c \u0645\u0627\u0646\u0646\u062f \u0646\u0648\u0633\u0627\u0646 \u0644\u06cc\u0646\u06a9 \u0639\u0636\u0648 (Member-link flap)\u060c \u0628\u0627\u0639\u062b \u0627\u06cc\u062c\u0627\u062f \u06a9\u0633\u0631\u06cc \u0634\u0648\u062f\u060c \u0631\u0648\u062a\u0631 \u0627\u06cc\u0646 \u06a9\u0633\u0631\u06cc \u0631\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u062a\u0641\u0631\u06cc\u0642 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0632\u0631\u0648 \u0634\u062f\u0647 \u06a9\u0644 LSP \u0627\u0632 \u062d\u062f\u0627\u06a9\u062b\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0642\u0627\u0628\u0644 \u0631\u0632\u0631\u0648 \u062c\u062f\u06cc\u062f \u0644\u06cc\u0646\u06a9 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u062f\u0631 \u0645\u062b\u0627\u0644\u200c\u0647\u0627\u06cc \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u062f\u0631 \u0627\u062f\u0627\u0645\u0647\u060c \u0647\u0631 \u062f\u0648 \u062d\u0627\u0644\u062a\u060c \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0631\u0627 \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0635\u0639\u0648\u062f\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f\u0650 LSP\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0631\u062f\u0647 \u0648 \u0633\u067e\u0633 \u062f\u0631 \u0635\u0648\u0631\u062a \u0628\u0631\u0648\u0632 \u0628\u06cc\u0634\u200c\u062c\u0647\u0634\u06cc (Overshoot)\u060c \u0644\u06cc\u0633\u062a \u0631\u0627 \u0647\u0631\u0633 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u062f\u0631 \u0645\u062b\u0627\u0644 \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u06a9\u0633\u0631\u06cc \u0628\u0632\u0631\u06af\u060c \u0627\u0646\u062a\u062e\u0627\u0628 \u0646\u0647\u0627\u06cc\u06cc \u0634\u0627\u0645\u0644 \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc \u0628\u0632\u0631\u06af\u200c\u062a\u0631 \u0627\u0633\u062a. \u0644\u06cc\u0633\u062a\u200c\u0647\u0627\u06cc \u0646\u0647\u0627\u06cc\u06cc \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u200c\u0647\u0627 \u0628\u0647 \u0634\u0631\u062d \u0632\u06cc\u0631 \u0647\u0633\u062a\u0646\u062f:<\/p>\n<ul>\n<li style=\"direction: rtl; text-align: right\">\u06a9\u0633\u0631\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u06a9\u0645\u062a\u0631: \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0646\u0647\u0627\u06cc\u06cc \u0634\u0627\u0645\u0644 \u062f\u0648 LSP \u0628\u0627 \u0638\u0631\u0641\u06cc\u062a 50 \u06af\u06cc\u06af\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 \u0627\u0633\u062a.<\/li>\n<li style=\"direction: rtl; text-align: right\">\u06a9\u0633\u0631\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0628\u06cc\u0634\u062a\u0631: \u0644\u06cc\u0633\u062a \u0646\u0647\u0627\u06cc\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0634\u0627\u0645\u0644 LSP\u0647\u0627\u06cc 300 \u0648 500 \u06af\u06cc\u06af\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 \u0627\u0633\u062a.<\/li>\n<\/ul>\n<p style=\"direction: rtl; text-align: right\">\u0627\u0648\u0644\u06cc\u0646 \u0633\u0646\u0627\u0631\u06cc\u0648\u06cc \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u06cc\u060c \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0645\u062c\u062f\u062f \u0627\u0633\u062a\u062e\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth-pool) \u062f\u0631 \u0644\u06cc\u0646\u06a9\u200c\u0647\u0627\u06cc MPLS \u0631\u0627 \u067e\u0648\u0634\u0634 \u0645\u06cc\u200c\u062f\u0647\u062f. \u0631\u0648\u062a\u0631 \u067e\u0633 \u0627\u0632 \u06a9\u0627\u0647\u0634 \u0627\u0633\u062a\u062e\u0631\u060c \u06a9\u0633\u0631\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth deficit) \u0631\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u06a9\u0631\u062f\u0647 \u0648 \u0641\u0631\u0622\u06cc\u0646\u062f \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0631\u0627 \u0622\u063a\u0627\u0632 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u06cc\u0646 \u06a9\u0633\u0631\u06cc \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062c\u0645\u0648\u0639 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0632\u0631\u0648 \u0634\u062f\u0647 LSP \u0631\u0648\u06cc \u0644\u06cc\u0646\u06a9\u060c \u0645\u0646\u0647\u0627\u06cc \u062d\u062f\u0627\u06a9\u062b\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0642\u0627\u0628\u0644 \u0631\u0632\u0631\u0648 \u062c\u062f\u06cc\u062f \u0644\u06cc\u0646\u06a9 \u067e\u0633 \u0627\u0632 \u062a\u0639\u062f\u06cc\u0644\u060c \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0633\u067e\u0633 \u0631\u0648\u062a\u0631 LSP\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u06a9\u0647 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u062f\u0627\u0631\u0646\u062f \u0631\u0627 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0628\u0631\u0627\u06cc \u06a9\u0633\u0631\u06cc\u200c\u0647\u0627\u06cc \u06a9\u0648\u0686\u06a9\u060c \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u0647\u0646\u06af\u0627\u0645 \u0627\u06cc\u062c\u0627\u062f \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc\u060c \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc\u06cc \u0628\u0627 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u06a9\u0645\u062a\u0631 \u0631\u0627 \u062f\u0631 \u0627\u0648\u0644\u0648\u06cc\u062a \u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u062f\u0647\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-6.webp\" alt=\"Six equal-priority LSPs reserve 50, 50, 100, 200, 300 and 500 Gbps. Ascending selection covers the 100 Gbps deficit with two 50 Gbps LSPs.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f6: \u06a9\u0633\u0631\u06cc \u06f1\u06f0\u06f0 \u06af\u06cc\u06af\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 (100 Gbps) \u067e\u0633 \u0627\u0632 \u06a9\u0627\u0647\u0634 \u0627\u0633\u062a\u062e\u0631 \u0631\u0632\u0631\u0648 (Reservable pool) \u0627\u0632 \u06f1.\u06f2 \u062a\u0631\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 (1.2 Tbps) \u0628\u0647 \u06f1.\u06f1 \u062a\u0631\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 (1.1 Tbps).<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0627\u06af\u0631 \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u0627\u0648\u0644\u06cc\u0647\u060c \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0628\u06cc\u0634\u062a\u0631\u06cc \u0627\u0632 \u062d\u062f \u0646\u06cc\u0627\u0632 \u0631\u0627 \u0627\u0634\u063a\u0627\u0644 \u06a9\u0646\u062f\u060c \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u0644\u06cc\u0633\u062a \u0631\u0627 \u0627\u0635\u0644\u0627\u062d \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u0627\u0646\u062a\u062e\u0627\u0628\u200c\u0634\u062f\u0647 \u0627\u0632 \u06a9\u0633\u0631\u06cc \u0648\u0627\u0642\u0639\u06cc \u0641\u0631\u0627\u062a\u0631 \u0631\u0648\u0646\u062f\u060c LSP\u0647\u0627\u06cc\u06cc \u0628\u0627 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u06a9\u0645\u062a\u0631 \u06a9\u0647 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0632\u0631\u0648 \u0634\u062f\u0647 \u0622\u0646\u200c\u0647\u0627 \u06a9\u0645\u062a\u0631 \u06cc\u0627 \u0645\u0633\u0627\u0648\u06cc \u0628\u0627 \u0645\u0642\u062f\u0627\u0631 \u0645\u0627\u0632\u0627\u062f (Overshoot) \u0628\u0627\u0634\u062f\u060c \u0627\u0632 \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u062d\u0630\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u062f\u0631 \u0645\u062b\u0627\u0644\u200c\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u06cc\u06a9\u0633\u0627\u0646\u0650 \u0627\u0631\u0627\u0626\u0647\u200c\u0634\u062f\u0647\u060c LSP\u0647\u0627\u06cc \u06a9\u0627\u0646\u062f\u06cc\u062f \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0635\u0639\u0648\u062f\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u062c\u0645\u0639\u200c\u0622\u0648\u0631\u06cc \u0645\u06cc\u200c\u0634\u0648\u0646\u062f \u062a\u0627 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u06a9\u0633\u0631\u06cc \u067e\u0648\u0634\u0634 \u062f\u0627\u062f\u0647 \u0634\u0648\u062f. \u062f\u0631 \u0637\u0648\u0644 \u0645\u0631\u062d\u0644\u0647 \u062f\u0648\u0645 \u0627\u0635\u0644\u0627\u062d\u060c LSP\u0647\u0627\u06cc \u06a9\u0627\u0646\u062f\u06cc\u062f\u06cc \u06a9\u0647 \u062f\u0631 \u0645\u062d\u062f\u0648\u062f\u0647 \u0645\u0627\u0632\u0627\u062f (Overshoot) \u0641\u0639\u0644\u06cc \u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u06af\u06cc\u0631\u0646\u062f \u062d\u0630\u0641 \u0634\u062f\u0647 \u0648 \u0645\u0642\u062f\u0627\u0631 \u0645\u0627\u0632\u0627\u062f (Overshoot) \u067e\u0633 \u0627\u0632 \u0647\u0631 \u062d\u0630\u0641 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\">\u0633\u0646\u0627\u0631\u06cc\u0648\u06cc \u062f\u0648\u0645 \u0622\u0632\u0645\u0627\u06cc\u0634\u06af\u0627\u0647\u060c \u0646\u0648\u0633\u0627\u0646 (Flap) \u062f\u0631 \u0644\u06cc\u0646\u06a9\u200c\u0647\u0627\u06cc \u0639\u0636\u0648 \u06cc\u06a9 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633 \u0628\u0627\u0646\u062f\u0644 MPLS \u0631\u0627 \u067e\u0648\u0634\u0634 \u0645\u06cc\u200c\u062f\u0647\u062f \u06a9\u0647 \u0645\u0646\u062c\u0631 \u0628\u0647 \u06a9\u0627\u0647\u0634 \u0642\u0627\u0628\u0644\u200c\u062a\u0648\u062c\u0647 \u0638\u0631\u0641\u06cc\u062a \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u062f\u0631 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633 \u0628\u0627\u0646\u062f\u0644 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0631\u0648\u062a\u0631\u060c \u06a9\u0633\u0631\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u06a9\u0631\u062f\u0647 \u0648 \u067e\u0633 \u0627\u0632 \u0631\u0633\u06cc\u062f\u0646 \u0627\u0633\u062a\u062e\u0631 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f MPLS \u0628\u0647 \u062d\u062f \u0645\u062c\u0627\u0632\u060c \u0641\u0631\u0622\u06cc\u0646\u062f \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption) \u0631\u0627 \u0622\u063a\u0627\u0632 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u067e\u0633 \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u062f\u0648\u0631 \u0627\u0648\u0644\u060c \u0647\u0645\u0686\u0646\u0627\u0646 \u0645\u0642\u062f\u0627\u0631\u06cc \u0628\u06cc\u0634\u200c\u0627\u0632\u062d\u062f (Overshoot) \u0628\u0627\u0642\u06cc \u0645\u06cc\u200c\u0645\u0627\u0646\u062f. \u0641\u0631\u0622\u06cc\u0646\u062f \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc\u060c \u0644\u06cc\u0633\u062a \u0645\u0630\u06a9\u0648\u0631 \u0631\u0627 \u0628\u0627 \u062d\u0630\u0641 LSP\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u06a9\u0645\u062a\u0631\u06cc \u062f\u0627\u0631\u0646\u062f\u060c \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u06a9\u0647 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0632\u0631\u0648 \u0634\u062f\u0647 \u0622\u0646\u200c\u0647\u0627 \u06a9\u0645\u062a\u0631 \u06cc\u0627 \u0645\u0633\u0627\u0648\u06cc \u0628\u0627 \u0645\u0642\u062f\u0627\u0631 \u0628\u06cc\u0634\u200c\u0627\u0632\u062d\u062f \u0628\u0627\u0634\u062f\u060c \u0627\u0635\u0644\u0627\u062d \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.anynet.ir\/blog\/wp-content\/uploads\/2026\/10\/image-7.webp\" alt=\"All six equal-priority LSPs enter the initial list. Removing 50, 50, 100 and 200 Gbps within the overshoot leaves the 300 and 500 Gbps LSPs.\"><\/p>\n<p align=\"center\" style=\"direction: rtl; text-align: right\"><em>\u0634\u06a9\u0644 \u06f7: \u06a9\u0633\u0631\u06cc \u06f8\u06f0\u06f0 \u06af\u06cc\u06af\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 (Gbps) \u067e\u0633 \u0627\u0632 \u06a9\u0627\u0647\u0634 \u0638\u0631\u0641\u06cc\u062a \u0627\u0633\u062a\u062e\u0631 \u0631\u0632\u0631\u0648 (Reservable pool) \u0627\u0632 \u06f1.\u06f2 \u062a\u0631\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 (Tbps) \u0628\u0647 \u06f4\u06f0\u06f0 \u06af\u06cc\u06af\u0627\u0628\u06cc\u062a \u0628\u0631 \u062b\u0627\u0646\u06cc\u0647 (Gbps).<\/em><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0628\u0647 \u0637\u0648\u0631 \u062e\u0644\u0627\u0635\u0647\u060c \u0642\u0627\u0628\u0644\u06cc\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u062f\u0631 IOS XR RSVP-TE \u0627\u0645\u06a9\u0627\u0646 \u067e\u0630\u06cc\u0631\u0634 \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u0628\u0627\u0644\u0627\u062a\u0631 (LSP) \u0631\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0644\u06cc\u0646\u06a9\u060c \u0627\u0632 \u0637\u0631\u06cc\u0642 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0628\u0631 \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0633\u062e\u062a (Hard preemption) \u0645\u0646\u0627\u0628\u0639 \u0631\u0627 \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0622\u0632\u0627\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f \u0627\u0645\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0627\u0639\u062b \u0627\u062e\u062a\u0644\u0627\u0644 \u062f\u0631 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0634\u0648\u062f\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft preemption) \u0628\u0647 \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc (LSP) \u062a\u062d\u062a \u062a\u0623\u062b\u06cc\u0631 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc\u200c\u062f\u0647\u062f \u062a\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u06a9\u0627\u0646\u06cc\u0632\u0645 make-before-break \u0628\u0647 \u0634\u06a9\u0644\u06cc \u0628\u0647\u06cc\u0646\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u0633\u06cc\u0631 \u062f\u0647\u0646\u062f. \u062f\u0631 \u0635\u0648\u0631\u062a \u06a9\u0627\u0647\u0634 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0627\u0633\u062a\u062e\u0631 \u0644\u06cc\u0646\u06a9 MPLS\u060c \u0627\u0646\u062a\u062e\u0627\u0628 \u0644\u06cc\u0633\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0628\u0631 \u0627\u0633\u0627\u0633 \u0645\u06cc\u0632\u0627\u0646 \u06a9\u0633\u0631\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0646\u0633\u0628\u062a \u0628\u0647 \u0631\u0632\u0631\u0648\u0647\u0627\u06cc \u0645\u0648\u062c\u0648\u062f \u062f\u0631 \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc (LSP) \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u0627\u06cc\u06cc\u0646\u200c\u062a\u0631\u060c \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n<h2 style=\"color: rgb(26, 26, 26); font-weight: 700; direction: rtl; text-align: right\">\u0645\u0631\u0627\u062c\u0639<\/h2>\n<p style=\"direction: rtl; text-align: right\"><a href=\"https:\/\/xrdocs.io\/8000\/tutorials\/mpls-te-bin-packing-cisco8000-auto-capacity\" style=\"color: rgb(0, 102, 204)\">\u0622\u0645\u0648\u0632\u0634 \u062e\u0648\u062f\u06a9\u0627\u0631\u0633\u0627\u0632\u06cc \u0638\u0631\u0641\u06cc\u062a (Auto-Capacity) \u062f\u0631 XRDocs TE++<\/a><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0646\u0645\u0648\u0646\u0647\u200c\u0647\u0627\u06cc \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0648 \u0639\u0645\u0644\u06cc\u0627\u062a\u06cc \u0628\u0631\u0627\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u062e\u0648\u062f\u06a9\u0627\u0631 (Auto-bandwidth) \u0648 \u062a\u0642\u0633\u06cc\u0645 (Splitting) \u0648 \u0627\u062f\u063a\u0627\u0645 (Merging) \u0645\u0633\u06cc\u0631\u0647\u0627\u06cc LSP \u062f\u0631 Cisco 8000.<\/p>\n<p style=\"direction: rtl; text-align: right\"><a href=\"https:\/\/xrdocs.io\/8000\/tutorials\/cisco-8000-pbts-implementation-basic\" style=\"color: rgb(0, 102, 204)\">\u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u067e\u0627\u06cc\u0647 (Basic) \u0642\u0627\u0628\u0644\u06cc\u062a PBTS \u062f\u0631 Cisco 8000 \u0633\u0631\u06cc XRDocs<\/a><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0646\u0645\u0648\u0646\u0647\u200c\u0647\u0627\u06cc\u06cc \u0627\u0632 \u0637\u0628\u0642\u0647\u200c\u0628\u0646\u062f\u06cc \u062a\u0631\u0627\u0641\u06cc\u06a9 (Traffic classification) \u0648 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0644\u0627\u0633 \u0627\u0631\u0633\u0627\u0644 (Forward-class selection) \u0628\u0631\u0627\u06cc \u0647\u062f\u0627\u06cc\u062a \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0628\u0647 \u062f\u0627\u062e\u0644 \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc MPLS-TE.<\/p>\n<p style=\"direction: rtl; text-align: right\"><a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc3209.html\" style=\"color: rgb(0, 102, 204)\">3. RFC 3209 \u2014 \u0627\u0641\u0632\u0648\u0646\u0647\u200c\u0647\u0627\u06cc RSVP-TE \u0628\u0631\u0627\u06cc \u067e\u0631\u0648\u062a\u06a9\u0644 RSVP \u062c\u0647\u062a \u062a\u0648\u0646\u0644\u200c\u0647\u0627\u06cc LSP<\/a><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0628\u062e\u0634\u200c\u0647\u0627\u06cc 2.5\u060c 3.1\u060c 4.6.4 \u0648 4.7 \u0628\u0647 \u0628\u0631\u0631\u0633\u06cc \u0642\u0627\u0628\u0644\u06cc\u062a make-before-break\u060c \u0633\u06cc\u06af\u0646\u0627\u0644\u200c\u062f\u0647\u06cc \u0645\u0633\u06cc\u0631 (PATH signaling)\u060c \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0648 \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc SESSION_ATTRIBUTE \u0645\u06cc\u200c\u067e\u0631\u062f\u0627\u0632\u0646\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\"><a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc5712.html\" style=\"color: rgb(0, 102, 204)\">4. RFC 5712 \u2014 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc \u0646\u0631\u0645 (Soft Preemption) \u062f\u0631 \u0645\u0647\u0646\u062f\u0633\u06cc \u062a\u0631\u0627\u0641\u06cc\u06a9 MPLS<\/a><\/p>\n<p style=\"direction: rtl; text-align: right\">\u0628\u062e\u0634\u200c\u0647\u0627\u06cc \u06f4\u060c \u06f6 \u0648 \u06f7 \u0628\u0647 \u0633\u06cc\u06af\u0646\u0627\u0644\u200c\u062f\u0647\u06cc \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u0627\u0646\u0647 \u0646\u0631\u0645 (soft-preemption signaling)\u060c \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u062d\u0644\u06cc \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f (Bandwidth) \u0648 \u0631\u0641\u062a\u0627\u0631 \u0632\u0645\u0627\u0646 \u067e\u0627\u06cc\u0627\u0646 (timeout) \u0645\u06cc\u200c\u067e\u0631\u062f\u0627\u0632\u0646\u062f.<\/p>\n<p style=\"direction: rtl; text-align: right\"><a href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc3181\" style=\"color: rgb(0, 102, 204)\">5. RFC 3181 \u2014 \u0639\u0646\u0635\u0631 \u062e\u0637\u200c\u0645\u0634\u06cc \u0627\u0648\u0644\u0648\u06cc\u062a \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption Priority) \u0639\u0644\u0627\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u0634\u062f\u0647<\/a><\/p>\n<p style=\"direction: rtl; text-align: right\">\u067e\u06cc\u0634\u200c\u0632\u0645\u06cc\u0646\u0647 \u0645\u0631\u062a\u0628\u0637 \u062f\u0631 \u0645\u0648\u0631\u062f \u06a9\u062f\u06af\u0630\u0627\u0631\u06cc \u0627\u0648\u0644\u0648\u06cc\u062a-\u0633\u06cc\u0627\u0633\u062a (policy-priority) \u062f\u0631 RSVP. \u0627\u06cc\u0646 \u0639\u0646\u0635\u0631 \u0633\u06cc\u0627\u0633\u062a (policy element) \u0628\u0627 \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0647\u0627\u06cc \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc \u0648 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc RSVP-TE \u06a9\u0647 \u062f\u0631 RFC 3209 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f\u060c \u0645\u062a\u0641\u0627\u0648\u062a \u0627\u0633\u062a.<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>RSVP-TE Preemption on Cisco 8000 | 8000 Tutorial | XRdocs \u0645\u0631\u0648\u0631\u06cc \u0628\u0631 \u067e\u06cc\u0634\u200c\u062f\u0633\u062a\u06cc (Preemption) \u067e\u0631\u0648\u062a\u06a9\u0644 \u0631\u0632\u0631\u0648 \u0645\u0646\u0627\u0628\u0639 \u0628\u0627 \u0627\u0641\u0632\u0648\u0646\u0647\u200c\u0647\u0627\u06cc \u0645\u0647\u0646\u062f\u0633\u06cc \u062a\u0631\u0627\u0641\u06cc\u06a9 (RSVP-TE) \u0627\u0632 \u0642\u0627\u0628\u0644\u06cc\u062a\u2026<\/p>\n","protected":false},"author":1,"featured_media":179,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[216,47],"tags":[],"class_list":["post-180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-216","category-iosxr"],"_links":{"self":[{"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/posts\/180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/comments?post=180"}],"version-history":[{"count":1,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/posts\/180\/revisions"}],"predecessor-version":[{"id":225,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/posts\/180\/revisions\/225"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/media\/179"}],"wp:attachment":[{"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/media?parent=180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/categories?post=180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.anynet.ir\/blog\/wp-json\/wp\/v2\/tags?post=180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}