Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

Monitoring Status and Configuration for MPLS Tunnels . . . . . . . . . . . . . . . . . . . 368
Verifying and Troubleshooting MPLS Connectivity . . . . . . . . . . . . . . . . . . . . . . . . 370
Sending an MPLS Echo Request Packet to an IP or IPv6 Address . . . . . . . . . 371
Tracing the Path of an MPLS Echo Request Packet to an IP or IPv6
Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Sending an MPLS Echo Request Packet to a Martini Circuit . . . . . . . . . . . . . 371
Tracing the Path of an MPLS Echo Request Packet to a Martini Circuit . . . . 371
Sending an MPLS Echo Request Packet to an L3VPN IP or IPv6 Prefix . . . . . 371
Tracing the Path of an MPLS Echo Request Packet to an L3VPN IP or IPv6
Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372
Sending an MPLS Echo Request Packet to an RSVP-TE Tunnel . . . . . . . . . . 372
Tracing the Path of an MPLS Echo Request Packet to an RSVP-TE
Tunnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372
Sending an MPLS Echo Request Packet to a VPLS Instance . . . . . . . . . . . . 372
Tracing the Path of an MPLS Echo Request Packet to a VPLS Instance . . . . 372
Packet Flow Examples for Verifying MPLS Connectivity . . . . . . . . . . . . . . . . . . . . 372
Packet Flow Examples for MPLS LSPs to an IP Prefix . . . . . . . . . . . . . . . . . . 373
Packet Flow Example for the ping mpls Command . . . . . . . . . . . . . . . . 373
Packet Flow Example for the trace mpls Command . . . . . . . . . . . . . . . 375
Packet Flows for ping and trace to L3VPN IPv4 Prefixes . . . . . . . . . . . . . . . . 376
Inter-AS Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
Packet Flows to L3VPN IPv6 Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
Troubleshooting MTU Problems in Point-to-Point LSPs . . . . . . . . . . . . . . . . . . . 379
Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated
with an IP or IPv6 Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated
with an L3VPN IP or IPv6 Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated
with a Martini Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated
with an RSVP-TE Tunnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated
with a VPLS Instance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Chapter 6 Configuring BGP-MPLS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
Address Families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
Equal-Cost Multipath Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385
BGP/MPLS VPN Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
VPN-IPv4 Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Route Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Distribution of Routes and Labels with BGP . . . . . . . . . . . . . . . . . . . . . . . . . 390
Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
Transporting Packets Across an IP Backbone with MPLS . . . . . . . . . . . . . . . . . . 394
Configuring IPv6 VPNs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
Intra-AS IPv6 VPNs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
BGP Control Plane Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
CE–PE Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400
xviiCopyright © 2010, Juniper Networks, Inc.
Table of Contents

Juniper JUNOSE 11.2.X BGP AND MPLS Specifications

General

Brand	Juniper
Model	JUNOSE 11.2.X BGP AND MPLS
Category	Software
Language	English