Dell Force10 S4820T FTOS Command Reference Guide - Page 344

www.dell.com | support.dell.com Command Modes Usage Information Related Commands Command History ROUTER BGP When fall-over is enabled, BGP keeps track of IP or IPv6 reachability to the peer remote address and the peer local address. Whenever either address becomes unreachable (i.e, no active route exists in the routing table for peer IP or IPv6 destination/local address), BGP brings down the session with the peer. show ip bgp neighbors Display information on the BGP neighbors Version 8.3.19.0 Version 8.3.7.0 Version 7.8.1.0 Version 7.7.1.0 Version 7.4.1.0 Introduced on the S4820T. Introduced on the S4810. Introduced support on S-Series Introduced support on C-Series Introduced neighbor filter-list c e s Configure a BGP filter based on the AS-PATH attribute. Syntax Parameters Defaults Command Modes Usage Information neighbor {ip-address | peer-group-name} filter-list as-path-name {in | out} To delete a BGP filter, use the no neighbor {ip-address | peer-group-name} filter-list as-path-name {in | out} command. ip-address peer-group-name as-path-name in out Enter the IP address of the neighbor in dotted decimal format. Enter the name of the peer group to apply the filter to all routers in the peer group. Enter the name of an established AS-PATH access list (up to 140 characters). If the AS-PATH access list is not configured, the default is permit (allow routes). Enter the keyword in to filter inbound BGP routes. Enter the keyword out to filter outbound BGP routes. Not configured. ROUTER BGP Use the ip as-path access-list command syntax in the CONFIGURATION mode to enter the AS-PATH ACL mode and configure AS-PATH filters to deny or permit BGP routes based on information in their AS-PATH attribute. 344 | Border Gateway Protocol IPv4 (BGPv4)