Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 282

connected to the router. The BGP process first determines if all internal BGP peers are reachable, then it determines which peers outside the AS are reachable. 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 a neighbor in ROUTER-BGP mode. neighbor ip-address 3 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 4 Enable the BGP neighbor in ROUTER-NEIGHBOR mode. no shutdown 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. View BGP summary with 2-byte AS number OS10# show ip bgp summary BGP router identifier 202.236.164.86 local AS number 64901 Neighbor AS MsgRcvd MsgSent Up/Down State/Pfx 120.10.1.1 64701 664 662 04:47:52 established 12000 View BGP summary with 4-byte AS number OS10# show ip bgp summary BGP router identifier 11.1.1.1, local AS number 4294967295 BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0 1 neighbor(s) using 8192 bytes of memory Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx 5.1.1.2 4294967295 0 0 0 0 0 00:00:00 Active For the router ID, the system selects the first configured IP address or a random number. To view the status of BGP neighbors, use the show ip bgp neighbors command. For BGP neighbor configuration information, use the show running-config bgp command. The example shows two neighbors - one is an external BGP neighbor, and the other is an internal BGP neighbor. The first line of the output for each neighbor displays the AS number and states if the link is external or internal. The third line of the show ip bgp neighbors output contains the BGP state. If anything other than established displays, the neighbor is not exchanging information and routes - see IPv6 commands for more information. View BGP neighbors OS10# show ip bgp neighbors BGP neighbor is 5.1.1.1, remote AS 1, internal link BGP version 4, remote router ID 6.1.1.1 BGP state established, in this state for 00:03:11 Last read 01:08:40 seconds, hold time is 180, keepalive interval is 60 seconds Received 11 messages 3 opens, 1 notifications, 3 updates 4 keepalives, 0 route refresh requests Sent 14 messages 3 opens, 1 notifications, 0 updates 10 keepalives, 0 route refresh requests Minimum time between advertisement runs is seconds Capabilities received from neighbor for IPv4 Unicast: MULTIPROTO_EXT(1)ROUTE_REFRESH(2)CISCO_ROUTE_REFRESH(128) Capabilities advertised to neighbor for IPv4 Unicast: MULTIPROTO_EXT(1)ROUTE_REFRESH(2)CISCO_ROUTE_REFRESH(128) 282 Layer 3