The peer reflect-client command configures the local router as the route reflector and the peer or peer group as the client of the route reflector.
The undo peer reflect-client command cancels the configuration.
By default, the route reflector and its client are not configured.
Usage Scenario
Full-meshed connections need to be established between IBGP peers to ensure the connectivity between the IBGP peers. If there are n Devices in an AS, n (n-1)/2 IBGP connections need to be established. A large number of IBGP peers use a lot of network and CPU resources. An RR can be used to solve the problem.
In an AS, one Device functions as an RR and other Devices function as clients. The clients establish IBGP connections with the RR. The RR and its clients form a cluster. The RR reflects routes among the clients, and therefore the clients do not need to establish any BGP connection. Assume that an AS has n Devices. If one of the Devices functions as an RR, and other Devices function as clients, the number of IBGP connections to be established is n-1. This means that network and CPU resources are greatly reduced. An RR is easy to configure, because it needs to be configured only on the device that functions as a reflector and clients do not need to know that they are clients.<HUAWEI> system-view [~HUAWEI] ip vpn-instance vpna [*HUAWEI-vpn-instance-vpna] ipv4-family [*HUAWEI-vpn-instance-vpn1-af-ipv4] route-distinguisher 100:1 [*HUAWEI-vpn-instance-vpna-af-ipv4] quit [*HUAWEI-vpn-instance-vpna] quit [*HUAWEI] bgp 100 [*HUAWEI-bgp] vpn-instance vpna [*HUAWEI-bgp-instance-vpna] peer 1.1.1.1 as-number 100 [*HUAWEI-bgp-instance-vpna] quit [*HUAWEI-bgp] ipv4-flow vpn-instance vpna [*HUAWEI-bgp-flow-vpna] peer 1.1.1.1 enable [*HUAWEI-bgp-flow-vpna] peer 1.1.1.1 reflect-client