Reference Guide

Usage
Information
Peering sessions are reset when you change the router ID of a BGP router.
bgp soft-reconfig-backup
Use this command only when route-refresh is not negotiated between peers to avoid having a peer re-
send BGP updates.
Syntax
bgp soft-reconfig-backup
To return to the default setting, use the no bgp soft-reconfig-backup
command.
Defaults Off
Command
Modes
ROUTER BGPV6 ADDRESS FAMILY (conf-router_bgpv6_af)
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version
8.3.19.0
Introduced on the S4820T.
Version 8.4.1.0 Added support for IPv4 multicast and IPv6 unicast address
families.
Version 7.8.1.0 Introduced on the S4810.
Version 7.7.1.0 Introduced on the C-Series.
Version 7.2.1.0 Introduced on the E-Series TeraScale.
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 replays and
updates are reevaluated. 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 negotiated (after execution of clear ip bgp soft in), BGP sends a
route-refresh request to the neighbor and receives all of the peer’s updates.
Related
Commands
clear ip bgp ipv6 unicast soft – activates inbound policies for IPv6 routes without
resetting the BGP TCP session.
1082
IPv6 Border Gateway Protocol (IPv6 BGP)