From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Tue Nov 20 2007 - 10:20:13 ART
The physical interface will remain up as long as it's receiving LMI from
the FRS. This means when the DLCI that is used for PPPoFR goes down the
backup interface will not kick in. To use the backup interface command
with PPPoFR the DLCI should be applied under a subinterface. This way
when the DLCI goes down the backup interface will kick in.
Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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>----- Original Message -----
Subject: backup interface
Date: Tue, November 20, 2007 0:56
From: "vignesh sethuraman" <sethuvignesh@yahoo.co.in>
> Hello,
>
> I have 2 routers connected via PPPoFR and also via serial interfaces
with PPP
> authentication.
>
> When I configure the serial interfaces to be the backup for PPPoFR
interfaces, the
> backup interfaces are not coming up.
>
> Below is my configuration,
>
> R1 (s1/0)--------PPP over framerelay----------(s1/0) R2
> | |
> |-----(s1/2)----- serial connection---------------(s1/2) |
>
> R1:
>
> interface Serial1/0
> no ip address
> backup interface s1/2
> encapsulation frame-relay
> frame-relay interface-dlci 504 ppp Virtual-Template1
> interface Virtual-Template1
> ip address 152.1.45.4 255.255.255.0
> interface Serial1/2
> ip address 152.1.54.4 255.255.255.0
> encapsulation ppp
> clock rate 64000
> ppp authentication chap
> end
>
> R2:
> interface Serial1/0
> no ip address
> backup interface s1/2
> encapsulation frame-relay
> frame-relay interface-dlci 405 ppp Virtual-Template1
> interface Virtual-Template1
> ip address 152.1.45.5 255.255.255.0
> interface Serial1/2
> ip address 152.1.54.5 255.255.255.0
> encapsulation ppp
> ppp authentication chap
> end
>
>
> Could anyone please help.
>
> Thanks,
> Vignesh
>
>
>
>
>
>
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