Junos OS MPLS Applications Configuration Guide - Juniper Networks

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Junos 11.1 MPLS Applications Configuration Guide • You can configure branch LSPs either statically, dynamically, or as a combination of static and dynamic LSPs. • You can enable graceful Routing Engine switchover (GRES) and graceful restart for point-to-multipoint LSPs at ingress and egress routers. The point-to-multipoint LSPs must be configured using either static routes or circuit cross-connect (CCC). GRES and graceful restart allow the traffic to be forwarded at the Packet Forwarding Engine based on the old state while the control plane recovers. For detailed information on how to configure GRES and graceful restart, see the Junos OS High Availability Configuration Guide. MPLS Load Balancing Based on the IP Header and MPLS Labels 52 Juniper Networks routers can load-balance on a per-packet basis in MPLS. Load balancing can be performed on information in both the IP header and on up to three MPLS labels, providing a more uniform distribution of MPLS traffic to next hops. This feature is enabled on supported platforms by default and requires no configuration. NOTE: This feature is only available on M320 and T Series Core Routers with enhanced Flexible PIC Concentrators (FPCs). The following information is extracted from the packet and used to load-balance the MPLS traffic: • Interface index—24 bits • MPLS label stack—bits 0 through 23 (the TTL bits are not examined) • IPv4 header information: • Protocol—8 bits • Destination address—32 bits • Source address—32 bits • Source port—16 bits • Destination port—16 bits • IPv6 header information: • Next header—8 bits • Least significant 4 bytes of destination address • Least significant 4 bytes of source address • Source port—16 bits • Destination port—16 bits In summary, MPLS load balancing is performed using the following fields: Copyright © 2011, Juniper Networks, Inc.
Copyright © 2011, Juniper Networks, Inc. Interface index + MPLS label+ IP header (IPv4 or IPv6) Chapter 3: MPLS Overview 53
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Junos ® OS MPLS Applications Confi
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END USER LICENSE AGREEMENT READ THI
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12. Commercial Computer Software. T
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Abbreviated Table of Contents Part
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Table of Contents Part 1 Overview A
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Chapter 4 MPLS Router Configuration
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DiffServ-Aware Traffic Engineered L
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Configuring BFD for MPLS IPv4 LSPs
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Part 3 RSVP path . . . . . . . . .
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Configuring RSVP Graceful Restart .
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Configuring LDP Graceful Restart .
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CCC and TCC Graceful Restart . . .
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Allowing Nonpacket GMPLS LSPs to Es
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List of Figures Part 2 MPLS Chapter
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List of Tables Part 2 MPLS About Th
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About This Guide This preface provi
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Using the Indexes • MX Series •
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Table 1: Notice Icons Icon Meaning
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or are covered under warranty, and
Page 39 and 40: PART 1 Overview Copyright © 2011,
Page 41 and 42: CHAPTER 1 Traffic Engineering Overv
Page 43 and 44: pair mapped to a set of forwarding
Page 45 and 46: Signaling Component An offline plan
Page 47 and 48: CHAPTER 2 Complete MPLS Application
Page 49 and 50: Copyright © 2011, Juniper Networks
Page 51 and 52: [edit protocols mpls] Hierarchy Lev
Page 55 and 56: [edit protocols rsvp] Hierarchy Lev
Page 59 and 60: PART 2 MPLS Copyright © 2011, Juni
Page 61 and 62: CHAPTER 3 MPLS Overview Copyright
Page 65 and 66: Label Description Special Labels Co
Page 67 and 68: Operations on Labels Copyright © 2
Page 69 and 70: Types of LSPs Scope of LSPs When th
Page 71 and 72: How CSPF Selects a Path Copyright
Page 73 and 74: LSPs on an Overloaded Router Fate S
Page 75 and 76: Enabling IGP Shortcuts Router A dec
Page 77 and 78: the egress router (established duri
Page 79 and 80: MPLS Applications BGP Destinations
Page 81 and 82: table. Packets directly addressed t
Page 83 and 84: MPLS and Traffic Protection Copyrig
Page 87 and 88: Detour Computations • For all the
Page 89: on the point-to-multipoint LSP to R
Page 93 and 94: CHAPTER 4 MPLS Router Configuration
Page 95 and 96: • [edit protocols mpls] • [edit
Page 99 and 100: interface so-0/0/0; } mpls { label-
Page 101 and 102: admin-groups { green 1; yellow 2; r
Page 103 and 104: Identifying the Problem Link errors
Page 105 and 106: Tunneling IPv6 Traffic over MPLS IP
Page 107 and 108: These Internet drafts are available
Page 111 and 112: CHAPTER 5 MPLS-Signaled LSP Configu
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Page 117 and 118: the no-install-to-address statement
Page 119 and 120: The range of values you can configu
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Page 127 and 128: Using the First MPLS Label in the H
Page 129 and 130: Related Documentation Note that the
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Related Documentation • [edit log
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Configuring the MPLS CoS Bits When
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Copyright © 2011, Juniper Networks
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The 1GE links are more likely to be
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Limiting the Number of Hops in LSPs
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CHAPTER 6 DiffServ-Aware Traffic En
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D Class type A collection of traffi
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• For forwarding classes and clas
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3. Once a path is found, RSVP signa
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mam; rdm; } You can include this st
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scheduler-maps { simple-map { forwa
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The LOM calculation is tied to the
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LOM(ct0) = 8 LOM(ct1) = 4 LOM(ct2)
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• You can configure subscription
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• ct2—Bandwidth reserved for cl
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Configuring the IGP necessary to co
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CHAPTER 7 Static and Explicit-Path
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} To determine whether the static e
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Configuring Explicit-Path LSPs If y
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CHAPTER 8 Point-to-Multipoint LSP C
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Configuring the Branch LSP as a Dyn
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You can include this statement at t
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the backup PE router groups that th
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CHAPTER 9 Miscellaneous MPLS Proper
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Configuring MPLS to Pop the Label o
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When you configure the mpls-forward
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Inter-AS traffic engineered LSPs ar
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unit 0 { passive { traffic-engineer
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mpls-lsp-traps; rfc3812-traps; } Yo
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Configuring Policers for LSPs The f
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Configuring Automatic Policers burs
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class all policer-action; class ctn
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Rewriting the EXP Bits of All Three
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} failure-action teardown; minimum-
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When the echo request arrives at th
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CHAPTER 10 Summary of MPLS Configur
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adjust-threshold-overflow-limit Syn
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admin-group (for LSPs) Syntax admin
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admin-group-extended Syntax admin-g
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admin-groups-extended-range Syntax
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always-mark-connection-protection-t
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auto-policing Syntax auto-policing
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andwidth (Fast Reroute, Signaled, a
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andwidth-model Syntax bandwidth-mod
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fd-liveness-detection Syntax bfd-li
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class-of-service Syntax class-of-se
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diffserv-te Syntax diffserv-te { ba
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exclude See the following sections:
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explicit-null Syntax explicit-null;
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fast-reroute Syntax fast-reroute {
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from Syntax from address; Hierarchy
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hop-limit Syntax hop-limit number;
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include-all See the following secti
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include-any See the following secti
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ingress Syntax ingress { bandwidth
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interface Syntax interface (interfa
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link-protection link-protection (Dy
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log-updown Syntax log-updown { no-t
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maximum-labels Syntax maximum-label
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mpls Syntax mpls { ... } Hierarchy
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no-cspf Syntax no-cspf; Hierarchy L
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no-install-to-address Syntax no-ins
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no-propagate-ttl Syntax no-propagat
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node-protection (Static LSP) Syntax
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optimize-aggressive Syntax optimize
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p2mp Syntax p2mp p2mp-lsp-name; Hie
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path-mtu Syntax path-mtu { allow-fr
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preference Syntax preference prefer
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priority Syntax priority setup-prio
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andom Syntax (random | least-fill |
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etry-timer Syntax retry-timer secon
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pf-check-policy Syntax rpf-check-po
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secondary Syntax secondary path-nam
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smart-optimize-timer Syntax smart-o
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static-label-switched-path Syntax s
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statistics Syntax statistics { auto
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switch-away-lsps Syntax switch-away
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te-class-matrix Syntax te-class-mat
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traceoptions Syntax traceoptions {
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traffic-engineering Syntax traffic-
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PART 3 RSVP Copyright © 2011, Juni
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CHAPTER 11 RSVP Overview Copyright
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• RFC 2216, Network Element Servi
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RSVP Authentication The Junos OS su
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PathErr Messages ResvErr Messages R
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• Reliable delivery of RSVP messa
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MTU Signaling in RSVP Limitations
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Multiple Bypass LSPs Node Protectio
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and ingress routers. It is availabl
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CHAPTER 12 RSVP Configuration Guide
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Example: Configuring RSVP and MPLS
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To enable all RSVP refresh reductio
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RSVP authentication uses a Hashed M
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Configuring RSVP Node ID Hellos You
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NOTE: To complete the configuration
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Configuring Bypass LSPs Copyright
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• [edit logical-systems logical-s
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Configuring the Amount of Bandwidth
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To disable RSVP graceful restart an
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Preempting RSVP Sessions The defaul
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Configuring RSVP to Pop the Label o
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If you configure the tunnel-service
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CHAPTER 13 Summary of RSVP Configur
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authentication-key Syntax authentic
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ypass (Signaled LSP) Syntax bypass
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class-of-service Syntax class-of-se
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fast-reroute Syntax fast-reroute op
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hello-acknowledgements Syntax hello
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interface Syntax interface interfac
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link-protection (RSVP) Syntax link-
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max-bypasses Syntax max-bypasses nu
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node-hello Syntax node-hello; Hiera
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no-neighbor-down-notification Synta
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optimize-timer Syntax optimize-time
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peer-interface Syntax peer-interfac
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priority Syntax priority setup-prio
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svp Syntax rsvp { ... } Hierarchy L
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soft-preemption Syntax soft-preempt
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traceoptions Syntax traceoptions {
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transit Syntax transit incoming-lab
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PART 4 LDP Copyright © 2011, Junip
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CHAPTER 14 LDP Overview LDP Introdu
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LDP Operation You must configure LD
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Figure 25: Double Push When LDP LSP
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LDP Graceful Restart Copyright © 2
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CHAPTER 15 LDP Configuration Guidel
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etween routers that are not directl
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Enabling Strict Targeted Hello Mess
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The graceful-restart statement enab
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For a list of hierarchy levels at w
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as the transport address for any LD
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interface statement allows you to m
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You can configure one of the follow
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Collecting LDP Statistics LDP Stati
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Tracing LDP Protocol Traffic • A
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flag packets; } } } Trace all LDP e
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Configuring LDP Session Protection
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Ignoring the LDP Subnet Check Copyr
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CHAPTER 16 Summary of LDP Configura
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fd-liveness-detection Syntax bfd-li
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disable Syntax disable; Hierarchy L
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explicit-null Syntax explicit-null;
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graceful-restart Syntax graceful-re
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helper-disable Syntax helper-disabl
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ignore-lsp-metrics Syntax ignore-ls
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interface Syntax interface interfac
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l2-smart-policy Syntax l2-smart-pol
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ldp-synchronization Syntax ldp-sync
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no-forwarding Syntax no-forwarding;
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Required Privilege Level Related Do
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Required Privilege policing Level R
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ecovery-time Syntax recovery-time s
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targeted-hello Syntax targeted-hell
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traffic-statistics Syntax traffic-s
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PART 5 CCC and TCC Copyright © 201
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CHAPTER 17 CCC and TCC Overview CCC
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the PPP encapsulation is stripped f
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CHAPTER 18 CCC and TCC Configuratio
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Configuring MPLS for Layer 2 Switch
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interface-switch layer2-sw { interf
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unit 0; } You can include these sta
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} On Router C: [edit] interfaces {
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Configuring TCC This section descri
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• [edit protocols connections]
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switch-name specifies the name of t
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CHAPTER 19 Summary of CCC and TCC C
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encapsulation Copyright © 2011, Ju
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lsp-switch Syntax lsp-switch connec
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p2mp-transmit-switch Syntax p2mp-tr
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PART 6 GMPLS Copyright © 2011, Jun
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CHAPTER 20 GMPLS Overview GMPLS Sta
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T Traffic engineering link A logica
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GMPLS and CSPF GMPLS Features Copyr
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CHAPTER 21 GMPLS Configuration Guid
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Complete the procedures in the foll
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te-link te-link-name; } Configuring
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peer sending a hello message to the
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[edit protocols link-management] tr
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Configuring the Signal Bandwidth Ty
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Configuring the Graceful Deletion T
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CHAPTER 22 Hierarchy of RSVP LSPs C
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Configuring an RSVP LSP on Ingress
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If you configure OSPF to advertise
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CHAPTER 23 Summary of GMPLS Configu
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disable disable (GMPLS) Syntax disa
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hello-interval hello-interval (LMP)
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label-switched-path Syntax label-sw
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local-address Syntax local-address
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peer-interface (OSPF) Syntax peer-i
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emote-id Syntax remote-id id-number
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te-link Syntax te-link te-link-name
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PART 7 Indexes Copyright © 2011, J
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Index Symbols #, comments in config
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example configurations.............
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failed LSPs fast reroute...........
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interface statement LDP............
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lsp-switch statement...............
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mpls.0 routing table...............
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graceful restart...................
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timers, hello packets..............
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to statement MPLS..................
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Index of Statements and Commands A
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maximum-neighbor-recovery-time stat
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