Dell Force10 S50-01-GE-48T FTOS 8.4.2.6 Command Line Reference Guide for the E - Page 777

Command History Version 8.4.2.1 Version 8.2.1.0 Version 7.4.1.0 Introduced on C-Series and S4810. Introduced on E-Series ExaScale Introduced on E-Series TeraScale Usage Timer values configured with the neighbor timers command override the timer values configured with Information the timers bgp command. When two neighbors, configured with different keepalive and holdtime values, negotiate for new values, the resulting values will be as follows: • the lower of the holdtime values is the new holdtime value, and • whichever is the lower value; one-third of the new holdtime value, or the configured keepalive value is the new keepalive value. neighbor update-source c e Enable the E-Series software to use Loopback interfaces for TCP connections for BGP sessions. Syntax neighbor {ipv6-address | peer-group-name} update-source loopback interface To use the closest interface, use the no neighbor {ipv6-address | peer-group-name} update-source loopback interface command. Parameters ipv6-address peer-group-name loopback interface Enter the IPv6 address in the x:x:x:x::x format. The :: notation specifies successive hexadecimal fields of zeros. Enter the name of the peer group to disable all routers within the peer group. Enter the keyword loopback followed by a number of the loopback interface. Range: 0 to 16383. Defaults Not configured. Command Modes ROUTER BGP Command History Version 8.4.2.1 Version 8.2.1.0 Version 7.4.1.0 Introduced on C-Series and S4810. Introduced on E-Series ExaScale Introduced on E-Series TeraScale Usage Information Loopback interfaces are up constantly and the BGP session may need one interface constantly up to stabilize the session. The neighbor update-source command is not necessary for directly connected internal BGP sessions. IPv6 Border Gateway Protocol (IPv6 BGP) | 777