[cisco-bba] cisco dual wan atm

[Frank Bulk]

>From what I can understand, your Cisco 7206 is not routing to the backup
route when the primary route fails.  I'm not a router jock, but I'm guessing
that's because the 7206 has no reason to update its route entry.  When the
HDSL link goes down the link status on the 7206 may not go down.  

 

Here's some good articles on this topic:

http://www.nil.com/ipcorner/SmallSiteMultiHoming/

http://www.nil.com/ipcorner/RedundantMultiHoming/

http://blog.ioshints.info/search/label/load%20balancing

http://blog.internetworkexpert.com/tag/load-balancing/

 

Frank

 

From: cisco-bba-bounces at puck.nether.net
[mailto:cisco-bba-bounces at puck.nether.net] On Behalf Of Matteo
Sent: Sunday, January 18, 2009 5:03 AM
To: cisco-bba at puck.nether.net
Subject: [cisco-bba] cisco dual wan atm

 

Hi,

 

I have this problem, I work to ISP, in our pop we have a Cisco 7206VXR with
ATM card that manage all adsl and hdsl our customers, now we have this
pronblem, one customer have Cisco 1721 with wic-1adsl and wic-1t, he use
wic-1adsl by adsl that arrive to our Cisco 7206, and wic-1t with modem
frame-relay to atm that also arrive to our same Cisco 7206.

On Cisco 1721 at FA0 it have public subnet ip that can reacheable from adsl
and hdsl (frame-relay). 

He would use HDSL as primary line and adsl as backup. On 1721 I setup two
default route the first to s0.1 with 0 and second to atm0.1 with 10, so when
s0.1 go down it use atm0.1. From other side (inside our pop) on cisco 7206 I
use same conf but in route I use not interface but next hop, when it made
unreachable route don't delete and so not work ??

 

Thank you

 

Matteo

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