From: kym blair (kymblair@xxxxxxxxxxx)
Date: Fri Apr 26 2002 - 20:44:40 GMT-3
I know the mechanics of how to set up both route-reflectors and
confederations, but I'm not sure when to use one or the other, and where to
place the route-reflector or various confederations.
How would you solve the following example:
AS2-----AS1--------------AS1-----AS2
.........R1----R3---R4---R5.........
All four BGP routers are in AS1. All four (plus R2) are known via your
IGPs. R1 and R5 are both connected to different routers in AS2 (outside
your control). You'll want to manipulate weight, local preference,
community settings, etc via R1 and R5.
Would you set up a route-reflector with 3 clients, or would you set up
confederations? Where would you put the route-reflector(s) or how would you
set up confederations for best results? Also, very important: which
router(s) would you use to redistribute between BGP and IGP?
I've read Halabi, Doyle Vol 2, and Parkhurst and understand the mechanics,
but am not good at deciding where to put things. What section of these
books (or others) should I reread to get a better understanding of bgp
network design?
Thanks, Kym
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