Dell Force10 S4820T FTOS Command Reference Guide - Page 319

Syntax Defaults Command Modes Usage Information Related Commands Command History bgp enforce-first-as To turn off the default, use the no bgp enforce-first-as command. Enabled ROUTER BGP This is enabled by default, that is for all updates received from EBGP peers, BGP ensures that the first AS of the first AS segment is always the AS of the peer. If not, the update is dropped and a counter is incremented. Use the show ip bgp neighbors command to view the "failed enforce-first-as check counter. If enforce-first-as is disabled, it can be viewed via the show ip protocols command. show ip bgp neighbors show ip protocols View the information exchanged by BGP neighbors View Information on routing protocols. 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 for C-Series Introduced bgp fast-external-fallover c e s Enable the fast external fallover feature, which immediately resets the BGP session if a link to a directly connected external peer fails. Syntax Defaults Command Modes Usage Information Command History bgp fast-external-fallover To disable fast external fallover, enter no bgp fast-external-fallover. Enabled. ROUTER BGP The bgp fast-external-fallover command appears in the show config command output. Version 8.3.19.0 Version 8.3.7.0 Version 7.8.1.0 Version 7.7.1.0 Introduced on the S4820T. Introduced on the S4810. Introduced support on S-Series Introduced support for C-Series Border Gateway Protocol IPv4 (BGPv4) | 319