Dell PowerSwitch S5212F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 440

Configuring BGP in a non-default VRF instance To configure BGP in a non-default VRF instance. 1 Assign an AS number, and enter ROUTER-BGP mode from CONFIGURATION mode (1 to 65535 for 2-byte, 1 to 4294967295 for 4byte). Only one AS number is supported per system. If you enter a 4-byte AS number, 4-byte AS support is enabled automatically. router bgp as-number 2 Enter ROUTER-BGP-VRF mode to configure BGP in a non-default VRF instance. vrf vrf-name 3 Enter a neighbor in CONFIG-ROUTER-VRF mode. neighbor ip-address 4 Add a remote AS in ROUTER-NEIGHBOR mode, from 1 to 65535 for 2-byte or 1 to 4294967295 for 4-byte. remote-as as-number 5 Enable the BGP neighbor in ROUTER-NEIGHBOR mode. no shutdown 6 (Optional) Add a description text for the neighbor in ROUTER-NEIGHBOR mode. description text To reset the configuration when you change the configuration of a BGP neighbor, use the clear ip bgp * command. To view the BGP status, use the show ip bgp summary command. Configure BGP OS10# configure terminal OS10(config)# router bgp 100 OS10(config-router-bgp-100)# vrf blue OS10(config-router-vrf)# neighbor 5.1.1.1 OS10(config-router-neighbor)# remote-as 1 OS10(config-router-neighbor)# description n1_abcd OS10(config-router-neighbor)# exit OS10(config-router-vrf)# template t1 OS10(config-router-template)# description peer_template_1_abcd Configure Dual Stack OS10 supports dual stack for BGPv4 and BGPv6. Dual stack BGP allows simultaneous exchange of same IPv4 or IPv6 prefixes through different IPv4 and IPv6 peers. You can enable dual stack using the activate command in the corresponding address-family mode. By default, activate command is enabled for the IPv4 address family for all the neighbors. If a BGP-v4 neighbor wants to carry ipv6 prefix information, it activates the IPv6 address-family. For a BGP-v6 neighbor to carry ipv4 prefix, it activates the IPv4 address-family. 1 Enable support for the IPv6 unicast family in CONFIG-ROUTER-BGP mode. address family ipv6 unicast 2 Enable IPv6 unicast support on a BGP neighbor/template in CONFIG-ROUTER-BGP-AF mode. activate Configure administrative distance Routers use administrative distance to determine the best path between two or more routes to reach the same destination. Administrative distance indicates the reliability of the route; the lower the administrative distance, the more reliable the route. If the routing table manager 440 Layer 3