Re: Simple backup question

From: Ilker Temir (itemir@cisco.com)
Date: Mon Nov 05 2001 - 06:38:17 EST


Selam Birsen,

Actually this does not make sense. A tunnel intf. is always up and has no
mechanism to detect if the tunnel destination is reachable or not (there are no
keepalives etc)

If you want to pass traffic through tunnel1 when tunnel0 is unavailable you can
run a routing protocol (i.e ospf or eigrp) over tunnel 0 and use a floating
static route for tunnel 1. But both tunnels will be up at the same time (even
when the tunnel is not operational)

Regards,

- Ilker

> Hello Everybody
>
> I have two tunnel interfaces:
>
> Tunnel0
> ip address 1.1.1.1 255.255.255.252
> tunnel source .....
> tunnel destination ....
> Tunnel1
> ip address 2.2.2.2 255.255.255.252
> tunnel source ...
> tunnel destination ...
>
> I want Tunnel1 to track the state of Tunnel0 and to go up only when
> Tunnel0 is down. How can I do that? Thank you in advance.
>
> Birsen Ozturk
>



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