HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 230
Configuring a BGP route reflector, Configuring a BGP confederation
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Configuring a BGP route reflector If an AS has many BGP routers, configure them as a cluster. To reduce IBGP connections, configure one of them as a route reflector and others as clients. To improve availability, you can specify multiple route reflectors for a cluster. The route reflectors in the cluster must have the same cluster ID to avoid routing loops. To configure a BGP route reflector (IPv4): Step Command 1. Enter system view. system-view 2. Enter BGP view or BGP-VPN instance view. • Enter BGP view: bgp as-number • Enter BGP-VPN instance view: a. bgp as-number b. ip vpn-instance vpn-instance-name 3. Enter BGP IPv4 unicast instance view or BGP-VPN IPv4 unicast instance view. ipv4-family [ unicast ] 4. Configure the router as a route reflector and specify a peer or peer { group-name | ip-address } peer group as its client. reflect-client 5. Enable route reflection between clients. reflect between-clients 6. (Optional.) Configure the reflector cluster-id { cluster-id | cluster ID of the route reflector. ip-address } Remarks N/A N/A N/A By default, no route reflector or client is configured. By default, route reflection between clients is enabled. By default, a route reflector uses its own router ID as the cluster ID. To configure a BGP route reflector (IPv6): Step Command 1. Enter system view. system-view 2. Enter BGP view. bgp as-number 3. Enter BGP IPv6 unicast instance view. ipv6-family [ unicast ] 4. Configure the router as a route reflector and specify a peer or peer { group-name | peer group as its client. ipv6-address } reflect-client 5. Enable route reflection between clients. reflect between-clients 6. (Optional.) Configure the reflector cluster-id { cluster-id | cluster ID of the route reflector. ip-address } Remarks N/A N/A N/A By default, no route reflector or client is configured. By default, route reflection between clients is enabled. By default, a route reflector uses its own router ID as the cluster ID. Configuring a BGP confederation BGP confederation provides another way to reduce IBGP connections in an AS. 219