[AusNOG] IOS router selection

Tue May 6 21:17:19 EST 2014

Hi

I was doing a bit more research seems like I can have multiple DGW
http://www.cisco.com/c/en/us/td/docs/security/asa/asa83/configuration/guide/config/route_static.html#wp1142906
section Configuring a Default Static Route

You can define up to three equal cost default route entries per device. Defining more than one equal cost default route entry causes the traffic sent to the default route to be distributed among the specified gateways. When defining more than one default route, you must specify the same interface for each entry

So now I have to go and test !

Alex

From: Alex Samad - Yieldbroker
Sent: Tuesday, 6 May 2014 12:45 PM
To: Greg Anderson; Lindsay Hill
Cc: AusNOG at lists.ausnog.net
Subject: RE: [AusNOG] IOS router selection

Oh, I was jumping in joy.. now ☹

A

From: Greg Anderson [mailto:ganderson at raywhite.com]
Sent: Tuesday, 6 May 2014 12:34 PM
To: Lindsay Hill
Cc: Alex Samad - Yieldbroker; AusNOG at lists.ausnog.net<mailto:AusNOG at lists.ausnog.net>
Subject: Re: [AusNOG] IOS router selection

They finally did it, but only supported on Next Gen ASAs!  [cid:image001.png at 01CF6970.8F8A4190] [cid:image002.gif at 01CF6970.8F8A4190]

So frustrating, I can't believe 9.1 is going to be the last version for the last generation ASA.

On 6 May 2014 09:57, Lindsay Hill <lindsay.k.hill at gmail.com<mailto:lindsay.k.hill at gmail.com>> wrote:
ASA now supports BGP: http://www.cisco.com/c/en/us/td/docs/security/asa/asa92/release/notes/asarn92.html

On Tue, May 6, 2014 at 11:46 AM, Alex Samad - Yieldbroker <Alex.Samad at yieldbroker.com<mailto:Alex.Samad at yieldbroker.com>> wrote:
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<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<mailto: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<mailto: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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