[c-nsp] BGP of 3750 Catalyst.. pinning IP

[Dave Temkin]

Static route to that /24 to null0 with a high weight will take care of
that.

-Dave

On Sat, 19 Mar 2005, Peter Kranz wrote:

> We are turning up a 3750 Catalyst as a multi-homed BGP router for one of our
> customers.. They have a single /24 avail to them a would like it setup as a
> 255.255.255.0 subnet mask..
>
> Usually we would pick an IP address from this, i.e. 200.123.123.1/32 and
> assign it to the loopback address as the anchor for the BGP process since it
> will never go down.. however, due to the customers desire for a
> 255.255.255.0 subnet, we cannot split off a /32 for the loopback.
>
> If we assign the 200.123.123.1/24 to the catalysts Vlan1, it goes down
> whenever no ports in the Vlan an up, causing the BGP process to stop
> advertising the /24 they want to multihome. This is workable, but will cause
> route dampening penalties whenever the Vlan is going up and down due to
> maint.
>
> Any better suggestions on how to pin up the /24 advertisement?
>
> Peter Kranz
> Founder/CEO - Unwired Ltd
> pkranz at unwiredltd.com       
>
>
>
>
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