DGS-6604 m clear ip bgp peer-group
CLI Reference Guide
97
clear ip bgp peer-group
To reset BGP connections using hard or soft reconfiguring for all the members of
a BGP peer group, use the clear ip bgp peer-group command.
Without Address Family Syntax
clear ip bgp peer-group PEER-GROUP-NAME [soft] [in | out]
Default None
Command Mode Privileged EXEC
Usage Guideline The clear ip bgp peer-group command is used to initiate a hard reset or soft
reconfiguration for neighbor sessions of BGP peer groups. A hard reset tears
down and rebuilds the specified peering sessions and rebuilds the BGP routing
tables. A soft reconfiguration uses stored prefix information to reconfigure and
activate BGP routing tables without tearing down existing peering sessions.
Soft reconfiguration uses stored update information, at the cost of additional
memory for storing the updates, to allow application of a new BGP policy without
disrupting the network. Soft reconfiguration can be configured for inbound or
outbound sessions.
Use this command whenever any of the following changes occur:
• Additions or modifications to the BGP-related access lists
• Modifications to BGP-related weights
• Modifications to BGP-related distribution lists
• Modifications to BGP-related route maps
The route refresh capability, as defined in RFC 2918, allows the local router to
reset inbound routing tables dynamically by exchanging route refresh requests to
supporting peers. The route refresh capability does not store update information
locally for non-disruptive policy changes. It instead relies on dynamic exchange
with supporting peers. Route refresh is advertised through BGP capability
negotiation. All BGP routers must support the route refresh capability.
Syntax Description
PEER-GROUP-NAME Peer group name.
in (Optional) Initiates inbound reconfiguring. If neither the in nor out keywords are
specified, both inbound and outbound sessions are reset.
out (Optional) Initiates inbound or outbound reconfiguring. If neither the in nor out
keywords are specified, both inbound and outbound sessions are reset.
soft (Optional) Initiates a soft reset. Does not tear down the session.
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