[AusNOG] Best practice BGP and wan links

[Mark Smith]

On 12 July 2015 at 15:14, Alex Samad - Yieldbroker
<Alex.Samad at yieldbroker.com> wrote:
> Yeah that was sort of my thought, I guess I have to start the process of asking for the extra IP..
>

More details of your scenario would be better.

VRRP being an option means that you only have a single link to your
upstream. Since in general links fail more often than devices, the
redundancy value of having two routers at your end and two BGP
sessions over a single link to a single upstream router is a bit
questionable, because you haven't eliminated all single points of
failure. You have partial but not complete redundancy, and you need to
consider whether not having complete redundancy is acceptable to
either or both you or your network's users.



> A
>
> -----Original Message-----
> From: Benoit Page-Guitard [mailto:benoit at anchor.net.au]
> Sent: Saturday, 11 July 2015 11:13 PM
> To: Alex Samad - Yieldbroker
> Cc: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] Best practice BGP and wan links
>
> Hi Alex,
>
> I assume the use case here is having redundant routers at the branch end and using VRRP on the WAN link as a signalling mechanism for deciding which router should "own" the WAN IP + speak BGP with the upstream router?
>
> If so, I'd definitely opt for an extra WAN IP if you can swing it. It'll make the whole failover scenario a lot smoother, and would also have the indirect benefit of giving you free load balancing for your downstream-facing LAN interfaces.
>
> Regards,
> Benoit
>
> On Sat Jul 11, 2015 at 08:03:10 +0000, Alex Samad - Yieldbroker wrote:
>>
>>What I was looking at doing was setting up bgp over vrrp on some mikrotik boxes, seems like it's possible, but it also seem easier to get an extra WAN ip.
>>
>>Any one doing this ?
>>
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