Reference Guide

neighbor fall-over
Enable or disable fast fall-over for BGP neighbors.
Z9000
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
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant Dell FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.4.2.1 Introduced on the C-Series and S4810.
Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.4.1.0 Introduced on the E-Series TeraScale.
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.
Z9000
Syntax
neighbor {ipv6-address | peer-group-name} filter-list as-path-
name {in | out}
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