Neighbor Update-Source - Dell Z9500 Reference Manual

When two neighbors, configured with different keepalive and holdtime values,
negotiate for new values, the resulting values are as follows:
•
•

neighbor update-source

Enable the software to use Loopback interfaces for TCP connections for BGP sessions.
Z9500
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
Defaults Not configured.
Command ROUTER BGP
Modes
Command
Version
History
9.2(1.0)
8.2.1.0
7.4.1.0
Usage Loopback interfaces are up constantly and the BGP session may need one
Information interface constantly up to stabilize the session. The neighbor update-source
command is not necessary for directly connected internal BGP sessions.
528
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.
Enter the IPv6 address in the x:x:x:x::x format.
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. The range is 0 to 16383.
Description
Introduced on the Z9500.
Introduced on the E-Series ExaScale.
Introduced
NOTE: The :: notation specifies successive hexadecimal
fields of zeros.
Border Gateway Protocol