UsageInformationTimer values configured with the neighbor timers command override the timer valuesconfigured with the timers bgp command.When two neighbors, configured with different keepalive and holdtime values,negotiate for new values, the resulting values are 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 theconfigured keepalive value is the new keepalive value.neighbor update-sourceEnable the E-Series software to use Loopback interfaces for TCP connections for BGP sessions.C-Series, E-SeriesSyntax neighbor {ipv6-address | peer-group-name} update-sourceloopback interfaceTo use the closest interface, use the no neighbor {ipv6-address | peer-group-name} update-source loopback interface command.Parametersipv6-address Enter the IPv6 address in the x:x:x:x::x format.NOTE: The :: notation specifies successive hexadecimal fields ofzeros.peer-group-name Enter the name of the peer group to disable all routers within the peergroup.loopbackinterfaceEnter the keyword loopback followed by a number of the loopbackinterface. The range is 0 to 16383.Defaults Not configured.Command Modes ROUTER BGPCommand History Version 8.2.1.0 Introduced on the E-Series ExaScale.Version 7.4.1.0 IntroducedUsageInformationLoopback interfaces are up constantly and the BGP session may need one interface constantlyup to stabilize the session. The neighbor update-source command is not necessary fordirectly connected internal BGP sessions.neighbor weightAssign a weight to the neighbor connection, which is used to determine the best path.C-Series, E-SeriesSyntax neighbor {ipv6-address | peer-group-name} weight weight494
