Re: Help with Confederation-RR-MPBGP

[Michael Hallgren <m.hallgren () free fr>]

Le 18/06/2014 18:31, Philip Lavine a écrit :
> I guess my question is (sorry MPLS speak ahead)
No harm, me I've always rather consifered MPLS as a service provider
(like VPN, etc).

>  with 4 PE's on the edge running MP-BGP and ISIS & 4 P's in the
> core running ISIS, is it best practice to confederate or use a route
> reflector and make the PE's clients.

MP-BGP for VPN, I guess? Or am I missing something in your case? If so,
you use MPLS for services, right? Where
do you hook up to 'the Internet'?

This aside, I'd go the confederation way (only?) in case I see a
potential future need to do amounts of by destination
routing also within my network. I'd find it nicer than rushing down the
RSVP lane (pending SR :-)) Makes some sense
to you?

> Basically I want to know what an ISP would do, not a test in a LAB.

Me, rarely had a lab for these kind of things, but quite often networks :-)

Cheers,

mh

> On Thursday, June 12, 2014 2:45 PM, Michael Hallgren
> <m.hallgren () free fr> wrote:
>  
>
>
> Le 12/06/2014 18:39, Valdis.Kletnieks () vt edu
> <mailto:Valdis.Kletnieks () vt edu> a écrit :
>
> > On Thu, 12 Jun 2014 09:25:20 -0700, Philip Lavine said:
> > > need some guidance on best practices
> >
> > What the vendor says is best practices, or what people in the trenches
> say?
> > > Is it more efficient to use RR or Confederation?
> >
> > If option A is 2% more "efficient" than option B, but takes 10%
> longer to
> > deploy and causes 3% more SLA payouts to your customers when the added
> > complexity causes a whoopsie, how much more work could you have gotten
> done in
> > the time you spent in an uncomfortable meeting explaining to upper
> management
> > why the whoopsie happened?
> >
> > (Sorry, it's been that sort of week :)
>
>
> :-)
>
> Now, Philip, I think along the same path as Vladis: it depends... What
> does
> your physical or layer 2 network look like? How do you expect packets to
> move around inside, and in and out, of that topology? You need policing?
> How much and of what, etc, etc...?
>
> I'm quite often a fan of confed's, if the network is young thus ``easy''
> migration, but there are scenarios... Please provide more detail to this
> mail
> thread or one-to-one if you prefer.
>
> Cheers,
>
> mh
>
> >