Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 138)

114 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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RSVP IGP synchronization for Remote Links
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red, group number: 6
green, group number: 8
RSVP IGP synchronization for Remote Links
The RSVP IGP Sync- Phase II feature enables an LSP ingress router to react to neighbor down
events from any location in the network. Any non-FRR or Bypass LSP can be rerouted when the
router receives an IGP link or neighbor down event.
MPLS will build an IGP Sync database which is independent of the MPLS TE database. The IGP
Sync data base links are keyed based on IPv4 address pair (Link IP, Router-Id of Links remote end).
The link will be added or updated in the database whenever an LSP Path comes UP. The IGP Link
gets deleted or updated whenever an LSP path goes DOWN or an IGP link down event gets
generated. The IGP Link database links are associated with individual LSP instances, such that
whenever an IGP link down event reaches MPLS, MPLS can correlate it to individual LSP paths.
An IGP Sync-phase II Link down event can lead to any one of the below actions:
• bring down an LSP and retry it (setup on new path avoiding failed link) OR
• bring down an LSP and switch to any other instance (secondary path) which is already up OR
• create a new instance of the LSP first and then switch to the new instance.
Limitations and pre-requisites
• This feature will not be usable when Traffic engineering is not enabled in any of the routers
used by the LSP.
• No additional or separate configurations are required to enable or disable Phase-I or Phase-II
separately.
• For full functionality of this feature, it is recommended that:
• All routers used by all the non-FRR and Bypass LSPs must be Traffic Engineering enabled
• All Transit routers shall support RRO
Enhanced show commands
The following CLI show commands related to IGP Sync are introduced by this feature.
• show mpls rsvp igp-sync
• show mpls rsvp igp-sync link
• show mpls rsvp igp-sync link detail
• show mpls rsvp igp-sync lsp
• show mpls rsvp igp-sync lsp detail
• show mpls rsvp igp-sync lsp lsp-name
IGP Sync LSP and Link details will be shown only when MPLS and MPLS IGP (OSPF and/or ISIS)
Sync are enabled.
Show mpls rsvp igp-sync
Brocade# show mpls rsvp igp-sync
Rsvp IGP Sync summary