Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 215
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For the router's identifier, FTOS uses the highest IP address of the Loopback interfaces configured. Since Loopback interfaces are virtual, they cannot go down, thus preventing changes in the router ID. If no Loopback interfaces are configured, the highest IP address of any interface is used as the router ID. To view the status of BGP neighbors, use the show ip bgp neighbors command in EXEC Privilege mode as shown in the example below. For BGP neighbor configuration information, use the show running-config bgp command in EXEC Privilege mode as shown in the second example. Note that the showconfig command in CONFIGURATION ROUTER BGP mode gives the same information as thew show running-config bgp. The following example displays two neighbors, one is an external and the second one is an internal BGP neighbor. The first line of the output for each neighbor displays the AS number and states whether the link is an external or internal. The third line of the show ip bgp neighbors output contains the BGP State. If anything other than ESTABLISHED is listed, the neighbor is not exchanging information and routes. For more details on using the show ip bgp neighbors command, refer to the FTOS Command Line Interface Reference. Command example: show ip bgp neighbors. FTOS#show ip bgp neighbors BGP neighbor is 10.114.8.60, remote AS 18508, external link BGP version 4, remote router ID 10.20.20.20 BGP state ESTABLISHED, in this state for 00:01:58 Last read 00:00:14, hold time is 90, keepalive interval is 30 seconds Received 18552 messages, 0 notifications, 0 in queue Sent 11568 messages, 0 notifications, 0 in queue Received 18549 updates, Sent 11562 updates Minimum time between advertisement runs is 30 seconds For address family: IPv4 Unicast BGP table version 216613, neighbor version 201190 130195 accepted prefixes consume 520780 bytes Prefix advertised 49304, rejected 0, withdrawn 36143 Connections established 1; dropped 0 Last reset never Local host: 10.114.8.39, Local port: 1037 Foreign host: 10.114.8.60, Foreign port: 179 BGP neighbor is 10.1.1.1, remote AS 65535, internal link Administratively shut down BGP version 4, remote router ID 10.0.0.0 BGP state IDLE, in this state for 17:12:40 Last read 17:12:40, hold time is 180, keepalive interval is 60 seconds Received 0 messages, 0 notifications, 0 in queue Sent 0 messages, 0 notifications, 0 in queue Received 0 updates, Sent 0 updates Minimum time between advertisement runs is 5 seconds For address family: IPv4 Unicast BGP table version 0, neighbor version 0 0 accepted prefixes consume 0 bytes Prefix advertised 0, rejected 0, withdrawn 0 Connections established 0; dropped 0 Last reset never No active TCP connection FTOS# Border Gateway Protocol IPv4 (BGPv4) | 215
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