Command Reference Guide
SROS Command Line Interface Reference Guide Enable Mode Command Set
5991-2114 © Copyright 2005 Hewlett-Packard Development Company, L.P. 32
clear ip bgp [* | <as-number> | <ip address>] [in | out | soft]
Use the clear ip bgp command to clear BGP neighbors as specified.
Syntax Description
* Clears all BGP neighbors.
<as-number> Clears all BGP neighbors with the specified AS number. Range is 1 to 65,535.
<ip address> Clears the BGP neighbor with the specified IP address.
in Causes a “soft” reset inbound with a neighbor, reprocessing routes advertised by
that neighbor.
out Causes a “soft” reset outbound with a neighbor, re-sending advertised routes to
that neighbor.
soft Causes a “soft” reset both inbound and outbound.
Default Values
No default value necessary for this command.
Command Modes
# Enable Command Mode
Functional Notes
The clear ip bgp command must be issued to re-initialize the BGP process between the peers matching
the given arguments. Most neighbor changes, including changes to prefix-list filters, do not take effect until
the clear command is issued. A hard reset clears the TCP connection with the specified peers which
results in clearing the table. This method of clearing is disruptive and causes peer routers to record a route
flap for each route.
The out version of this command provides a soft reset out to occur by causing all routes to be re-sent to
the specified peer(s). TCP connections are not torn down so this method is less disruptive. Output
filters/policies are re-applied before sending the update.
The in version of this command provides a soft reset in to occur by allowing the router to receive an
updated table from a peer without tearing down the TCP connection. This method is less disruptive and
does not count as a route flap. Currently all of the peer's routes are stored permanently, even if they are
filtered by a prefix list. The command causes the peer's routes to be reprocessed with any new
parameters.
Usage Examples
The following example causes a hard reset with peers with an AS number of 101:
#clear ip bgp 101