Re: iBGP RR Cluster ID - What is best practice?

From: Narbik Kocharians (narbikk@gmail.com)
Date: Wed Nov 26 2008 - 15:40:39 ARST

Which ones because i deal with lots of them and i have never seen one.

On Wed, Nov 26, 2008 at 9:12 AM, Marko Milivojevic <markom@markom.info>wrote:

> Yes.
>
> On Wed, Nov 26, 2008 at 17:02, Narbik Kocharians <narbikk@gmail.com>
> wrote:
> > You mean you know an ISP that actually does that?
> >
> > On Wed, Nov 26, 2008 at 3:15 AM, Marko Milivojevic <markom@markom.info>
> > wrote:
> >>
> >> On Tue, Nov 25, 2008 at 21:34, Narbik Kocharians <narbikk@gmail.com>
> >> wrote:
> >> !
> >> > But i don't know of a provider that configures the cluster-id,
> typically
> >> > a
> >> > RR-client must be a client in at least 2 or more clusters, this way
> the
> >> > provider maximizes its availability.
> >>
> >> It's actually very common practice when deploying hierarchical route
> >> reflection (global RR's reflect to regional RR's which reflect to
> >> local RR's and vice-versa).
> >>
> >> In this kind of scenario, where redundant route-reflectors are at the
> >> same time route-reflector clients, forming a loop is very real danger.
> >> The "only" way to prevent these loops is careful cluster-id planning
> >> and I'm more than certain that these are set manually to values other
> >> than BGP router-id :-).
> >>
> >> --
> >> Marko
> >> CCIE #18427 (SP)
> >> My network blog: http://cisco.markom.info/
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> > --
> > Narbik Kocharians
> > CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> > www.MicronicsTraining
> > www.Net-Workbooks.com <http://www.net-workbooks.com/>
> > Sr. Technical Instructor
> >
> 

-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining
www.Net-Workbooks.com
Sr. Technical Instructor

Blogs and organic groups at http://www.ccie.net

This archive was generated by hypermail 2.1.4 : Mon Dec 01 2008 - 08:18:32 ARST