[c-nsp] BGP default route with multi ISPs

[Noriega, Alejandro]

I have a doubt about an implementation of this feature.
I have 3 upstream providers. I receive a default route form each one. The upstream bandwidth is the same.
I want to do load-sharing between these upstreams. Could I generate a conditional default route (only generate it if match the upstream one) and inject this to my backbone router. Doing this on my 3 border router I'd be receiving in my backbone router 3 default routes vía iBGP with my AS and I'd use the command "maximum-paths ibgp 3". Could this implementation work? Anyone did it?

Thanks in advance.
Regards,
Alejandro.

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Earls, Michael
Sent: Tuesday, November 16, 2004 5:48 PM
To: cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] BGP default route with multi ISPs


Perfect,

That works for me.

michael

Michael 

PGP Info: KeyID 0x0DFD993C
Fingerprint F903 0325 5105 2CDB 4BF4 C88B 72F7 BA7A 28CC 598A 


-----Original Message-----
From: Oliver Boehmer (oboehmer) [mailto:oboehmer at cisco.com]
Sent: Tuesday, November 16, 2004 3:37 PM
To: Earls, Michael; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] BGP default route with multi ISPs



> Can BGP have two default routes to 2 different ISPs being used for 
> load sharing.

Not to two different ISPs, but in your case it is the same remote-as, so you can use standard BGP multipath load-sharing (enable "maximum-paths 2" in your BGP router). See http://www.cisco.com/warp/public/459/25.shtml#bgpmpath

> 101>sh ip bgp
> BGP table version is 6, local router ID is 1.1.1.1
> Status codes: s suppressed, d damped, h history, * valid, > best, i - 
> internal,
>               S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
> 
>    Network          Next Hop            Metric LocPrf Weight Path
> *  0.0.0.0          65.157.156.2                            0 36360 i
> *>                  65.157.156.3                            0 36360 i
> 

	oli



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