Configuring A Route Reflector And Specifying Clients - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
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8.10.2 Configuring a Route Reflector and Specifying Clients

Deploying an RR and clients in an address family allows IBGP peers to communicate without
having full-mesh logical connections established between them, reducing network configuration
and maintenance workload, and improving network performance.
Context
In an AS, one router serves as an RR, and the other routers serve as clients. IBGP peer
relationships are set up between the RR and clients. The RR reflects routes between clients, and
BGP connections do not need to be established between the clients. A BGP device that is neither
an RR nor a client is called a non-client. Non-clients and the RR must establish full-mesh
connections with each other.
After receiving IBGP routes, the RR selects optimal routes based on BGP route selection policies
and advertises learned routes to its clients and non-clients following the rules described below:
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In addition, the RR advertises learned EBGP routes to all non-clients and clients.
It is easy to configure an RR. The RR functionality only needs to be configured on one router.
Configurations on clients are not required.
Perform the following steps on the router that is running BGP and is to be specified as an RR:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
Step 3 Run:
ipv4-family unicast
The IPv4 unicast address family view is displayed.
Step 4 Run:
peer { ipv4-address | group-name } reflect-client
The router is specified as an RR and its clients are configured.
Issue 02 (2014-09-30)
Data
Role of each router (RR, client, or non-client)
(Optional) Cluster ID of the RR
After learning routes from non-clients, the RR advertises the routes to all clients.
After learning routes from clients, the RR advertises the routes to all non-clients and clients.
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