• 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
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 Enter the IPv6 address in the x:x:x:x::x format.
NOTE: The :: notation specifies successive hexadecimal
fields of zeros.
peer-group-
name
Enter the name of the peer group to disable all routers within
the peer group.
loopback
interface
Enter the keyword loopback followed by a number of the
loopback interface. The range is 0 to 16383.
Defaults Not configured.
Command
Modes
ROUTER BGP
Command
History Version Description
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Introduced
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.
neighbor weight
Assign a weight to the neighbor connection, which is used to determine the best path.
Z9500
Syntax neighbor {ipv6-address | peer-group-name} weight weight
556 Border Gateway Protocol