Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 223

Step 2 3 4 Command Syntax Command Mode Purpose neighbor peer-group-name subnet subnet-number mask neighbor peer-group-name no shutdown neighbor peer-group-name remote-as as-number CONFIG-ROUTER-BGP CONFIG-ROUTER-BGP CONFIG-ROUTER-BGP Assign a subnet to the peer group. The peer group will respond to OPEN messages sent on this subnet. Enable the peer group. Create and specify a remote peer as a BGP neighbor. Only after the peer group responds to an OPEN message sent on the subnet does its BGP state change to ESTABLISHED. Once the peer group is ESTABLISHED, the peer group is the same as any other peer group. For more information on peer groups, refer to Configure Peer Groups. Maintain existing AS numbers during an AS migration The local-as feature smooths out the BGP network migration operation and allows you to maintain existing ASNs during a BGP network migration. When you complete your migration, be sure to reconfigure your routers with the new information and disable this feature. Command Syntax Command Mode Purpose neighbor {IP address | peer-group-name local-as as number [no prepend] CONFIG-ROUTER-BGP Allow external routes from this neighbor. Format: IP Address: A.B.C.D Peer Group Name: 16 characters AS-number: 0-65535 (2-Byte) or 1-4294967295 (4-Byte) or 0.1-65535.65535 (Dotted format) No Prepend specifies that local AS values are not prepended to announcements from the neighbor. You must Configure Peer Groups before assigning it to an AS. This feature is not supported on passive peer groups. Disable this feature, using the no neighbor local-as command in CONFIGURATION ROUTER BGP mode. R2(conf-router_bgp)#show conf ! router bgp 65123 bgp router-id 192.168.10.2 network 10.10.21.0/24 network 10.10.32.0/24 network 100.10.92.0/24 Border Gateway Protocol IPv4 (BGPv4) | 223