Bfd Support For Bgp; Centralized Bfd - Alcatel-Lucent 7450 Configuration Manual

Ethernet service switch/service router/extensible routing syste

Hide thumbs Also See for 7450:

Table of Contents

Weighted Load-Balancing over MPLS LSP

BFD Support for BGP

This feature enhancement allows BGP peers to be associated with the BFD session. If the

BFD session failed, then BGP peering will also be torn down.

The following applications of centralized BFD require BFD to run on the SF/CPM.

IES Over Spoke SDP

One application for a central BFD implementation is so BFD can be supported over spoke

SDPs used to inter-connection IES or VPRN interfaces. When there are spoke SDPs for inter-

connections over an MPLS network between two routers, BFD is used to speed up failure

detections between nodes so re-convergence of unicast and multicast routing information can

begin as quickly as possible.

The MPLS LSP associated with the spoke SDP can enter or egress from multiple interfaces

on the box. BFD for these types of interfaces can not exist on the IOMXCM itself.

IES Over Spoke SDP

BFD Over LAG and VSM Interfaces

Figure 11: BFD for IES/VPRN over Spoke SDP

In this case BFD is run between

the IES/VPRN interfaces

independent of the SPD/LSP paths

Primary Path

Secondary Path

Router Configuration Guide