ECMP Labels for MPLS ................................................................................233
MPLS Connectivity and ECMP ...............................................................233
Supported TLVs .....................................................................................234
MPLS Connectivity Verification and Troubleshooting Methods ....................235
Point-to-Multipoint LSPs Connectivity Verification at Egress Nodes
Overview ..............................................................................................237
Ping Extensions for Point-to-Multipoint LSPs Connectivity Verification at
Egress Nodes ........................................................................................237
RSVP P2MP IPv4 Session Sub-TLV Overview ........................................238
P2MP Responder Identifier TLV Overview ............................................238
Echo Jitter TLV Overview ......................................................................238
Traceroute Overview ............................................................................239
TLVs and Sub-TLVs Supported for Point-to-Multipoint LSPs Connectivity
Verification at Egress Nodes .................................................................239
Echo Jitter TLV Operations ....................................................................239
P2MP Responder Identifier TLV Operations ..........................................240
Egress Address P2MP Responder Identifier Sub-TLVs .....................241
Node Address P2MP Responder Identifier Sub-TLVs .......................241
LDP Discovery Mechanisms ........................................................................242
LDP Basic Discovery Mechanism ..........................................................242
LDP Extended Discovery Mechanism ....................................................242
MPLS Traffic Engineering ............................................................................243
LSP Backup ...........................................................................................243
Path Option ..........................................................................................244
Reoptimization .....................................................................................244
Methods for Configuring RSVP-TE Tunnels ...........................................244
Tracking Resources for MPLS Traffic Engineering .................................244
Starting Admission Control .............................................................245
Admission Control Interface Table .................................................245
Configuring Traffic-Engineering Resources .....................................245
LSP Preemption ....................................................................................246
Topology-Driven LSPs .................................................................................246
LDP over RSVP-TE ................................................................................246
LDP Graceful Restart ...................................................................................247
LDP-IGP Synchronization ............................................................................249
Synchronization Behavior During Graceful Restart ................................250
Synchronization Behavior on LAN Interfaces ........................................251
Synchronization Behavior on IGP Passive Interfaces .............................251
Synchronization and TE Metrics ............................................................251
Determining Peer Reachability with RSVP-TE Hello Messages .....................251
Hello Message Objects ..........................................................................252
Hello Message Instances .......................................................................252
Sequence of Hello Message Exchange ...................................................252
Determination That a Peer Has Reset ...................................................253
Behavior of the Requesting Peer .....................................................253
Behavior of the Acknowledging Peer ..............................................253
Behavior of Both Peers ...................................................................253
RSVP-TE Graceful Restart ............................................................................254
Announcement of the Graceful Restart Capability .................................254
Restarting Behavior ...............................................................................254
Recovery Behavior ................................................................................255
Table of Contents â– xiii
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