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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 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 {ipv6-address | peer-group-name} fall-over
To disable, use the no neighbor {ipv6-address | peer-group-name} fall-over 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.
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 fall-over, BGP keeps track of IP or IPv6 reachability to the peer remote address and
the peer local address. Whenever either address becomes unreachable (for examle, no active route exists
in the routing table for peer IP or IPv6 destination/local address), BGP brings down the session with the
peer.
Related
Commands
show ip bgp ipv6 unicast neighbors — displays IPv6 routing information exchanged by BGP neighbors.
neighbor filter-list
Configure a BGP filter based on the AS-PATH attribute.
Syntax
neighbor {ipv6-address | peer-group-name} filter-list as-path-name {in |
out}
To delete a BGP filter, use the no neighbor {ipv6-address | peer-group-name} filter-
list as-path-name {in | out} 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.
628 IPv6 Border Gateway Protocol (IPv6 BGP)