[c-nsp] iBGP overriding IGP - ?

[Jeff Bacon]

Yow.

I was wondering what "pre-bestpath" in the community string meant. Sigh.
I assumed it lived within BGP only, not that it'd turn the entire
route-selection process on its head. Silly me. It didn't make it into
"MPLS and VPN Architectures volume II" so... 

 

Thanks! 

 

 

From: Chris Evans [mailto:chrisccnpspam2 at gmail.com] 
Sent: Sunday, November 07, 2010 7:57 PM
To: Jeff Bacon
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] iBGP overriding IGP - ?

 

And I email again...   It is from the mpls superbackbone feature.
Research "bgp cost community" and you will understand.   

Hope this helps.  

On Nov 7, 2010 7:49 PM, "Chris Evans" <chrisccnpspam2 at gmail.com> wrote:
> Looking at it more the eigrp route doesn't have a successor so it does
mark
> it as a valid route. As ibgp is the only available path it gets
installed.
> I don't know eigrp enough to tell you why though.
> On Nov 7, 2010 7:23 PM, "Chris Evans" <chrisccnpspam2 at gmail.com>
wrote: