From: Ronnie Angello (ronnie.angello@gmail.com)
Date: Tue May 22 2007 - 21:31:50 ART
In the first config you're tracking the IP routing state of the interface.
The tracked object is up if 1) the interface line protocol is up, 2) ip
routing is enabled, and 3) the interface ip address is known. This method
is especially useful when the interface ip address is negotiated through
PPP/IPCP or is obtained via DHCP.
The second config is only tracking the line protocol of the interface. The
tracked interface will be considered up when the interface is in the up, up
state. You can even disable ip routing on the router/switch and it will
remain active for that standby group.
On 5/22/07, Robert Cuello <smdmokay@yahoo.com> wrote:
>
> Hello All,
>
> Is there any differece that I'm not aware between the following two
> commands or is this just a matter of preference??
>
> router(config)#track 1 interface s0/0/0 ip routing
> router(config-if)# standby 1 track 1 decrement 20
>
> VS
>
> router(config-if)#standby 1 track interface s0/0/0 20
>
> I'm thinking that the first command track if the interface can route even
> though it might still be up, compare to the second command where it only
> tracks if the interface is down or not. So you might encounter a situation
> where the interface is up, but not routing and for that you might just want
> to switch the traffic to the peer anyway???
>
> Thanks for the clarification.
>
>
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