6
Configuring Routing
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Voyager Reference Guide
No special configuration is required on the route reflection clients. From a
client’s perspective, a route reflector is simply a normal IBGP peer. Any BGP
version 4 speaker should be able to be a reflector client.
Please refer to the route reflection specification document (RFC 1966 as of
this writing) for further details.
AS1 has five BGP-speaking routers. With Router B working as a route
reflector, there is no need to have all the routers connected in a full mesh.
Confederations
An alternative to route reflection is BGP confederations. As with route
reflectors, BGP speakers may be partitioned into clusters where each cluster is
typically a topologically-close set of routers. With confederations, this is
accomplished by subdividing the autonomous system into multiple, smaller
ASes that communicate among themselves. The internal topology is hidden
from the outside world; this simply perceives the confederation to be one
large AS.
Each distinct sub-AS within a confederation is referred to as a routing domain
(RD). Routing domains are identified by using a routing domain identifier
(RDI). The RDI has the same syntax as an AS number, but as it is not visible
outside of the confederation so it does not need to be globally unique,
although it does need to be unique within the confederation. Many
Nokia
Platform A
Nokia
Platform D
Nokia
Platform F
Nokia
Platform G
Nokia
Platform C
Nokia
Platform E
Nokia
Platform B
Non-Client
Client
Route Reflector
Client
Non-Client
Cluster
AS676
IBGP
IBGP
IBGP
IBGP
EBGP
00328
AS1
Summary of Contents for Network Voyager
Page 1: ...Voyager Reference Guide Part No N450820002 Rev A Published December 2003 ...
Page 4: ...4 Voyager Reference Guide ...
Page 30: ...2 How to Use Voyager 30 Voyager Reference Guide ...
Page 32: ...3 Command Line Utility Files 32 Voyager Reference Guide ...
Page 220: ...5 Configuring Interfaces 220 Voyager Reference Guide ...
Page 446: ...7 Configuring Traffic Management 448 Voyager Reference Guide ...
Page 618: ...10 Configuring Security and Access 620 Voyager Reference Guide ...
Page 668: ...14 Configuring IPv6 670 Voyager Reference Guide ...
Page 672: ...15 IPSO Process Management 674 Voyager Reference Guide ...
Page 700: ...Index 702 Voyager Reference Guide ...