[c-nsp] ebgp load balancing using maxiumu-paths TCAM impact on Sup720-3BXL?

Peter Rathlev peter at rathlev.dk
Fri May 22 05:05:40 EDT 2009

On Thu, 2009-05-21 at 15:04 -0500, Kevin Hodle wrote:
> Q. How do I deploy Cisco PfR in networks not running internal BGP
> (iBGP) within the enterprise?
> A. To synchronize routing within the enterprise and take advantage of
> new optimal Cisco PfR routes, route redistribution into the local
> Interior Gateway Protocol (IGP; for example, EIGRP, OSPF, or RIP)
> needs to occur.
> (Sorry - but this just wouldn't fly in a service provider environment)

On Thu, 2009-05-21 at 16:16 -0500, Brad Hedlund wrote: 
> Interesting, I thought it was common for service providers to run iBGP.

On Fri, 2009-05-22 at 01:37 -0500, Abello, Vinny wrote:
> Yes, it is commonplace for service providers to run iBGP. The uncommon
> thing Kevin was eluding to was redistributing BGP into your IGP.
> That's a no no. :)

But the redistribution is only needed if you're not running iBGP
throughout your core, right? So most service providers and larger
enterprises will not have any problems.

Or did I misunderstand PfR (with which I have no experience)?


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