[AusNOG] IOS router selection

[Alex Samad - Yieldbroker]

Hi

Lots of info.

So  I have OSPF running, actually on top of iBGP. Pity the ASA doesn't handle iBGP :(

So this is for when OSPF is down, I want a static dgw. I have 2 potential DGW, I would like to preference 1 over the other. The other holds all the backup links..

No sure where I got the impression that cisco would invalidate a route if it wasn't arp-able.

Alex

> -----Original Message-----
> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of
> Beeson, Ayden
> Sent: Monday, 5 May 2014 11:31 PM
> To: Glen Turner
> Cc: AusNOG at lists.ausnog.net
> Subject: Re: [AusNOG] IOS router selection
> 
> If it's for a default gateway at layer 2 a fhrp would be a much better way to
> go.
> 
> For layer three static routes will work but it's definitely sub optimal, just get a
> routing protocol running and save yourself a bunch of trouble...
> 
> Cdp won't be useful unless the device is directly connected to all three and
> even then it'll be manual checks, as somebody said you might be able to tie it
> into ip sla metrics but it's definitely not the best way to go.
> 
> Cheers,
> Ayden
> 
> On 05/05/2014 5:02 pm, Glen Turner <gdt at gdt.id.au> wrote:
> >
> >
> > > seems to me CDP would be used/useful for this? At least from a l2
> perspective which would be the case of outage 99% the time?
> >
> > Since you would have to configure the neighbours to activate CDP, maybe
> you could configure the neighbours to run a routing protocol?
> >
> > Just an idle thought, glen
> >
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