Dell Force10 S60-44T FTOS Configuration Guide for the S60 System FTOS 8.3.3.8 - Page 170

www.dell.com | support.dell.com Figure 8-23. Command example: show ip bgp peer-group Force10#sh ip bgp peer-group Peer-group test Fall-over enabled BGP version 4 Minimum time between advertisement runs is 5 seconds For address family: IPv4 Unicast BGP neighbor is test Number of peers in this group 1 Peer-group members (* - outbound optimized): 100.100.100.100* Force10# router bgp 65517 neighbor test peer-group neighbor test fall-over Fast Fall-Over Indicator neighbor test no shutdown neighbor 100.100.100.100 remote-as 65517 neighbor 100.100.100.100 fall-over neighbor 100.100.100.100 update-source Loopback 0 neighbor 100.100.100.100 no shutdown Force10# Configure passive peering When you enable a peer-group, the software sends an OPEN message to initiate a TCP connection. If you enable passive peering for the peer group, the software does not send an OPEN message, but it will respond to an OPEN message. When a BGP neighbor connection with authentication configured is rejected by a passive peer-group, FTOS does not allow another passive peer-group on the same subnet to connect with the BGP neighbor. To work around this, change the BGP configuration or change the order of the peer group configuration. Use these commands in the following sequence, starting in the CONFIGURATION ROUTER BGP mode to configure passive peering. Step 1 2 3 4 Command Syntax Command Mode neighbor peer-group-name peer-group passive CONFIG-ROUTERBGP neighbor peer-group-name subnet CONFIG-ROUTER- subnet-number mask BGP neighbor peer-group-name no shutdown neighbor peer-group-name remote-as as-number CONFIG-ROUTERBGP CONFIG-ROUTERBGP Purpose Configure a peer group that does not initiate TCP connections with other peers. 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 for BGP neighbor. 170 | Border Gateway Protocol IPv4 (BGPv4)