Administrator Guide

Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
7.5.1.0 Introduced
Related
Commands
capture bgp-pdu neighbor — enables capture of an IPv4 BGP neighbor packet.
show capture bgp-pdu neighbor — displays BGP packet capture information for an IPv6 address on the E-Series.
clear ip bgp
Reset BGP sessions. The soft parameter (BGP Soft Reconfiguration) clears the policies without resetting the TCP connection.
C9000 Series
Syntax
clear ip bgp [vrf vrf-name] [* | <1–4294967295> | <0.1–65535.65535> | A.B.C.D
{soft {in | out}} | X:X:X:X::X {soft {in | out}} | dampening | flap-statistics
| ipv4 | ipv6 | peer-group]
Parameters
vrf vrf-name Enter the keyword vrf and then the name of the VRF to clear all BGP sessions
corresponding to that VRF.
NOTE: Use this attribute to clear a BGP instance corresponding to either a
specific address family in a default VRF or an IPv4 address family in a a non-
default VRF.
* Enter an asterisk ( * ) to reset all BGP sessions.
<1-4294967295> Enter <1-4294967295> to clear peers with the AS number.
<0.1-65535.65535
>
Enter <0.1-65535.65535> to clear peers with the AS number in dot format.
A.B.C.D Enter the BGP neighbor address in the A.B.C.D format to clear.
X:X:X:X::X Enter the BGP neighbor address in the X:X:X:X::X format to clear.
soft (OPTIONAL) Enter the keyword soft to configure and activate policies without resetting
the BGP TCP session, that is, BGP Soft Reconfiguration.
NOTE: If you enter the clear ip bgp ip-address soft command, both
inbound and outbound policies are reset.
in (OPTIONAL) Enter the keyword in to activate only inbound policies.
out (OPTIONAL) Enter the keyword out to activate only outbound policies.
NOTE: You must execute the clear ip bgp soft out command when
ever there is a change in the local policy. If you do not run this command
after a local policy change, then these policy changes are not reflected in the
responses to the peer’s route refresh messages.
dampening Enter the keyword dampening to clear the flap dampening information.
flap-statistics Enter the keywords flap-statistics to clear the flap statistics information.
ipv4 Enter the ipv4 address family to clear.
334 Border Gateway Protocol