CLI Guide

ttl (OPTIONAL) Enter the number of hops as the Time to Live (ttl) value. The range is from 1
to 255. The default is 255.
Defaults Disabled.
Command Modes ROUTER BGP
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information To prevent loops, the neighbor ebgp-multihop command does not install the default routes of the multihop
peer. Networks not directly connected are not considered valid for best-path selection.
neighbor fall-over
Enable or disable fast fall-over for BGP neighbors.
Syntax
neighbor {ipv4-address | peer-group-name} fall-over
To disable, use the no neighbor {ipv4-address | peer-group-name} fall-over command.
Parameters
ipv4-address Enter the IP address of the neighbor in dotted decimal format.
peer-group-name Enter the name of the peer group.
Defaults Disabled.
Command Modes ROUTER BGP
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information When you enable failover, BGP keeps track of IP or IPv6 ability to reach the peer remote address and the peer local
address. Whenever either address becomes unreachable (for example, no active route exists in the routing table
for the peer IP or IPv6 destination/local address), BGP brings down the session with the peer.
Related Commands show ip bgp neighbors — displays information on the BGP neighbors.
neighbor graceful-restart
Enable graceful restart on a BGP neighbor.
Syntax
neighbor {ip-address | peer-group-name} graceful-restart [restart-time seconds]
[stale-path-time seconds] [role receiver-only]
To return to the default, enter the no bgp graceful-restart command.
Border Gateway Protocol IPv4 (BGPv4) 315