867VAE dual WAN SDSL and ADSL failover

[Abdelaziz EL ABDALLAOUI]

Hello,

I have the 867VAE router, and I'm looking for configuration example to implement the SDSL as the primary WAN and the ADSL for the backup.

Could you send me plz an example of configuration?

Cheer

BR
A.Aziz

[Amit Goyal]

Hello,

Below configuration should help. Lets assume you have dialer10 (Primary) and dialer20 (backup).

track 10 ip sla 10
ip sla 10
 icmp-echo 8.8.8.8
ip sla schedule 10 life forever start-time now

ip route 8.8.8.8 255.255.255.255 dialer10 permanent

ip route 0.0.0.0 0.0.0.0 dialer10 track 10
ip route 0.0.0.0 0.0.0.0 dialer20 100

HTH

-Amit
 

[Abdelaziz EL ABDALLAOUI]

Hello Amit,

Thank you for your replay.

The configuration seam correct, the only thing those not works is the failover.

In fact,

I unplugged the primary WAN failover does not happen

Tks

[Amit Goyal]

Hello,

>When you unplugged primary ISP, do you see track 10 is going down?

Please provide below output during primary ISP down.

show track 10

show ip route 0.0.0.0

Regards

-Amit

[Abdelaziz EL ABDALLAOUI]

Pleas see as bellow :

AIST#sh ip route 0.0.0.0

Routing entry for 0.0.0.0/0, supernet

  Known via "static", distance 253, metric 0 (connected), candidate default path

  Routing Descriptor Blocks:

  * directly connected, via Dialer1

      Route metric is 0, traffic share count is 1

AIST#sh track 1

Track 1

  IP SLA 1 reachability

  Reachability is Down

    3 changes, last change 03:14:29

  Latest operation return code: Timeout

  Tracked by:

    STATIC-IP-ROUTING 0

BR

[Amit Goyal]

Hello,

AIST#sh ip route 0.0.0.0

Routing entry for 0.0.0.0/0, supernet

  Known via "static", distance 253, metric 0 (connected), candidate default path

  Routing Descriptor Blocks:

  * directly connected, via Dialer1 <<<<<<<Secondary ISP

      Route metric is 0, traffic share count is 1

>Default route is pointing to dialer 1 which has AD 253.

>That means configuration and fail-over is working.

>There could be another concern that secondary ISP is really able to pass traffic coming from your end?

>Do a traceroute for any other public ip and check if you see secondary ISP in first hop.

>By default dialer interface remains up all the time. No matter if DSL line is up or not.

>"Show caller ip" will tell you if you are able to see secondary ISP or not.

>May be you need to check with your secondary ISP for this.

HTH

-Amit