From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Tue Sep 04 2007 - 19:51:57 ART
Frame Relay end-to-end keepalives can not be used to bring down the
physical interface.
The physical interface with Frame Relay will be up/up as long as it is
receiving LMI from the Frame Relay switch and will not change to the down
state based on the status of a DLCI or with the use of Frame Relay
end-to-end keepalives. The logic is that if you brought the physical
interface down when a DLCI became inactive or keepalives were missed, how
would you ever be able to know when the DLCI becomes active again or
keepalives are starting to be received again?
HTH,
Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
>----- Original Message -----
Subject: FR end-to-end keepalive; Backup interface
Date: Tue, September 4, 2007 15:45
From: "ISolveSystems" <support@isolvesystems.com>
> R4's s0/0/0 connects to R5's s0/0/0.54 p2p
>
> R4's S0/1/0 connects to R5's s0/1/0.
>
> Frame relay end to end keepalive is configured on both sides.
>
> I found out that if I configured "backup interface s0/1/0" on R4's s0/0/0
> interface. The backup is not activated when I shut down R5's S0/0/0.
>
> If I configured "backup interface s0/1/0" on R5's s0/0/0.54 interface, the
> backup int is activated when I shut down the other side.
>
> Does backup interface has to be issued on p2p interface for the e2e
> keepalive to work?
>
> Thanks.
>
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