you can have non-optimal (but still consistant and correct) routing.
- Original Message -
From: "David Barak" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, January 12, 2005 4:20 AM
Subject: Re: IBGP Question --- Router Reflector or iBGP Mesh
>
>
> --- Alexei Roudnev
It is correct more or less (I prefer to say that RR reflects only the best
routes... through I am not sure, is it
theoretical limitation or just implementation - RR can in theory reflect ALL
routes).
Anyway, usual usage of RR is _RR on backbone, and clients in the branches_,
which eliminate this
On Wed, 2005-01-12 at 12:20, Iljitsch van Beijnum wrote:
> (Obviously the IGP metric will be different at the client, but the
> client doesn't see the other routes, so it can't make a different
> decision. The real fun starts when the next (intra-AS) hop isn't a
> reflector client and the pack
--- Alexei Roudnev <[EMAIL PROTECTED]> wrote:
>
> Are you sure? RR should just distribute routes.
>
> RR do not make any route decisions, and (btw) iBGP
> do not make route
> decisions - they are mostly based on IGP routing.
> All iBGP + RR are doing
> is:
> - tie external routes to internal I
On 12-jan-05, at 9:06, Alexei Roudnev wrote:
Are you sure? RR should just distribute routes.
RR do not make any route decisions, and (btw) iBGP do not make route
decisions - they are mostly based on IGP routing.
Route reflectors only propagate their idea of the best route for a
destination. If th
Are you sure? RR should just distribute routes.
RR do not make any route decisions, and (btw) iBGP do not make route
decisions - they are mostly based on IGP routing. All iBGP + RR are doing
is:
- tie external routes to internal IP;
- distribute this information using iBGP mesh, RR's etc.
- recei
On 11-jan-05, at 12:51, Philip Smith wrote:
Well, my preference is to start with route reflectors pretty much from
day one. Let's face it, one day you will have to migrate that full
mesh iBGP to route reflector. Why do the work of migration when you
can start off at the beginning using route ref
On Tue, 2005-01-11 at 13:09, Daniel Roesen wrote:
> One of the main problems of route reflection is that the best path
> decision is done centrally. The best route is not seen as from the
> router making the forwarding decision, but from the route reflector's
> point of view. Depending on network
On Tue, Jan 11, 2005 at 09:51:36PM +1000, Philip Smith wrote:
> Many of the ISPs I've worked with around the world have followed this
> path - and they are quite happy. I really think there is absolutely no
> need to consider full mesh iBGP any more. I wouldn't go as far as saying
> it's histor
Hi Eric,
Eric Kagan said the following on 11/01/2005 11:03:
>>
Correct, route reflector's main advantage is scalability and
if you're thinking to evolve into a larger network with
dedicated access and core routers, route reflectors are a far
better option than full mesh, though perhaps not from
On Tue, 2005-01-11 at 02:03, Eric Kagan wrote:
>
> Does anyone have any input on when this does make sense ? We have 3 Main IP
> pops with upstream BGP at each and 4 internal BGP sessions. I am looking to
> add 2 new routers so there will be about 7 sessions on each border router.
This seems
> Correct, route reflector's main advantage is scalability and
> if you're thinking to evolve into a larger network with
> dedicated access and core routers, route reflectors are a far
> better option than full mesh, though perhaps not from the start.
Does anyone have any input on when this d
On Sat, 2005-01-08 at 00:20, Robert Crowe wrote:
> Yes, an iBGP session is possible between A & C. Route Reflectors
> main purpose was to reduce the iBGP full mesh requirement, thus
> providing for BGP scalability. If you only have 3 BGP speakers then
> there is no need, unless you are expec
] On Behalf
Of Erik Sundberg
Sent: Friday, January 07, 2005 5:02 PM
To: nanog@merit.edu
Subject: IBGP Question --- Router Reflector or iBGP Mesh
hello,
I have a ibgp question?
There is a Diagram at http://erik.appscorp.net/bgp/
Which Setup is better, the Router Reflector or the ibgp meshed?
hello,
I have a ibgp question?
There is a Diagram at http://erik.appscorp.net/bgp/
Which Setup is better, the Router Reflector or the ibgp meshed?
What are the positive and negitive to each setup.
Which Setup is commonly used / best pratice / More stable
Diagram at http://erik.appscorp.net/b
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