06-23-2002 11:20 PM - edited 03-01-2019 10:22 PM
Dear all,
I want to ask if I had a frame relay VC between two routers in a frame relay cloud , and these two routers are not connecting to the same frame relay switch , if one router goes down did the other router will sense that the router is down in layer 2 ? ?
as I know frame relay lmi's are only between frame relay switch and the router and if one goes down the other will not detect that am i right or not ?
thanx in advance,
06-23-2002 11:41 PM
Hi,
the answere is yes.The router on the other end should get the information over the LMI-protocol
that the "pvc" has changed to inactive because the information is transfered through the FR-network. This is at least the case for FR-networks which are builded up by Cisco FR-switches.
regards Ulrich
06-24-2002 01:31 AM
It's depending of the Frame Relay implementation at the carrier level.
To be sure you can implement FrameRelay keepalive on PVCs at your routers level.
This is available in IOS 12.1 train.
On the 2 routers which are endding a FR PVC :
1. create a map-class frame relay (global config):
map-class frame-relay NAME
frame-relay end-to-end keepalive mode bidirectional
2. apply it on the FR subinterface
interface serialX.Y
frame-relay class NAME
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