CLI Guide

IPv6 BGP Commands
IPv6 Border Gateway Protocol (IPv6 BGP) is supported on the switch.
Border gateway protocol (BGP) is an external gateway protocol that transmits interdomain routing
information within and between autonomous systems (AS). BGP version 4 (BGPv4) supports classless
interdomain routing and the aggregation of routes and AS paths. Basically, two routers (called neighbors
or peers) exchange information including full routing tables and periodically send messages to update
those routing tables.
bgp soft-reconfig-backup
To avoid the peer from resending messages, use this command only when route-refresh is not
negotiated.
Syntax
bgp soft-reconfig-backup
To return to the default setting, use the no bgp soft-reconfig-backup
command.
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 soft-reconfiguration for a neighbor and you execute the clear
ip bgp soft in command, the update database stored in the router is replayed
and updates are re-evaluated. With this command, the replay and update process is
triggered only if route-refresh request is not negotiated with the peer. If the
request is indeed negotiated (after executing the
clear ip bgp soft in
command), BGP sends a route-refresh request to the neighbor and receives all of
the peer’s updates.
Related
Commands
clear ip bgp — activates inbound policies without resetting the BGP TCP session.
Border Gateway Protocol IPv4 (BGPv4)
435