[c-nsp] C6500 IPv6 redistribute with route-map?

[Steve Housego]

Are there any good resources that detail best current practice for route reflector design?

Google doesn't bring up much real-world experience, i.e. detailing caveats, redundancy options etc..

SteveH

-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Justin M. Streiner
Sent: 10 December 2013 12:44
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] C6500 IPv6 redistribute with route-map?

On 10/Dec/2013 at 09:22:01 AM, Patrick M. Hausen wrote:
> I do have the knowledge and capacity to implement iBGP as my IGP
> *now*, except for the route reflectors suggested. Would you recommend
> that approach? I.e. going without the route reflectors and the
> communities first? It~Rs only 4-5 machines in total, after all, all
> Cisco. And no customers with BGP currently.

Starting out with route reflectors is a good idea.  It makes the network easier to scale as needed.

Doing a full IBGP mesh gets messy very quickly.  Even if you use peer-groups to simplify things, you're still dealing with a lot of IBGP sessions ((n * (n - 1)) / 2 sessions).  With 5 routers, that would mean 10 sessions.  With 10 routers, that would mean 45 sessions.  Additionally, managing all of those sessions can chew up a lot of resources on your routers.  Anything you can simplify will serve you well over time.

jms
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