Users Guide
Version 7.4.1.0 Introduced on the E-Series TeraScale.
Usage Information
Timer values congured with the neighbor timers command override the timer values congured with
the timers bgp command.
When two neighbors, congured with dierent 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
• whichever is the lower value; one-third of the new holdtime value, or the congured keepalive value is
the new keepalive value
neighbor update-source
Enable the 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 Enter the IPv6 address in the x:x:x:x::x format.
NOTE: The :: notation species successive hexadecimal elds of zeros.
peer-group-name Enter the name of the peer group to set the timers for all routers within the peer
group.
loopback interface Enter the keyword loopback then a number of the loopback interface. The range
is from 0 to 16383.
Defaults Not congured.
Command Modes ROUTER BGP
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.4.2.1 Introduced on the C-Series and S4810.
Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.4.1.0 Introduced on the 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.
958
IPv6 Border Gateway Protocol (IPv6 BGP)