Lenovo RackSwitch G8264CS Cli Command Reference page 516

516
G8264CS Command Reference for ENOS 8.4
Table 286.
BGP Peer Configuration Options (continued)
Command Syntax and Usage
neighbor <1‐96> shutdown
Disables this peer configuration.
Command mode: Router BGP
no neighbor <1‐96> shutdown
Enables this peer configuration.
Command mode: Router BGP
neighbor <1‐96> time­to­live <1‐255>
Time‐to‐live (TTL) is a value in an IP packet that tells a network router
whether or not the packet has been in the network too long and should be
discarded. TTL specifies a certain time span in seconds that, when exhausted,
would cause the packet to be discarded. The TTL is determined by the number
of router hops the packet is allowed before it must be discarded.
This command specifies the number of router hops that the IP packet can
make. This value is used to restrict the number of "hops" the advertisement
makes. It is also used to support multi‐hops, which allow BGP peers to talk
across a routed network.
The default number is set at 1.
Note: The TTL value is significant only to eBGP peers, for iBGP peers the TTL
value in the IP packets is always 255 (regardless of the configured value).
Command mode: Router BGP
no neighbor <1‐96> time­to­live
Disables the TTL feature.
Command mode: Router BGP
neighbor <1‐96> timers hold­time <0, 3‐65535>
Sets the period of time, in seconds, that will elapse before the peer session is
torn down because the switch hasn't received a "keep alive" message from the
peer.
The default value is 180 seconds.
Command mode: Router BGP
neighbor <1‐96> timers keep­alive <0‐21845>
Sets the keep‐alive time for the specified peer, in seconds.
The default value is 60 seconds.
Command mode: Router BGP
neighbor <1‐96> ttl­security hops <1‐254>
Sets the minimum number of time‐to‐live (TTL) router hops an IP packet must
have to not be discarded.
Command mode: Router BGP