Dell Force10 S4820T FTOS Command Reference Guide - Page 805
bgp fast-external-fallover, bgp four-octet-as-support
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Command History Version 8.3.19.0 Version 8.4.2.1 Version 8.2.1.0 Version 7.4.1.0 Introduced on S4820T Introduced on C-Series and S4810 Introduced on E-Series ExaScale Introduced on E-Series TeraScale bgp fast-external-fallover c e 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 Command History Usage Information bgp fast-external-fallover To disable fast external fallover, enter no bgp fast-external-fallover. Enabled ROUTER BGP Version 8.3.19.0 Version 8.4.2.1 Version 8.2.1.0 Version 7.4.1.0 Introduced on S4820T Introduced on C-Series and S4810 Introduced on E-Series ExaScale Introduced on E-Series TeraScale The bgp fast-external-fallover command appears in the show config command output. bgp four-octet-as-support c e Enable 4-byte support for the BGP process Syntax Defaults Command Modes Usage Information bgp four-octet-as-support To disable fast external fallover, enter no bgp four-octet-as-support. Disabled (supports 2-Byte format) ROUTER BGP Routers supporting 4-Byte ASNs advertise that function in the OPEN message. The behavior of a 4-Byte router will be slightly different depending on whether it is speaking to a 2-Byte router or a 4-Byte router. When creating Confederations, all the routers in the Confederation must be 4 or 2 byte identified routers. You cannot mix them. IPv6 Border Gateway Protocol (IPv6 BGP) | 805