38-66
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-12247-04
Chapter 38 Configuring IP Unicast Routing
Configuring BGP
To disable flap dampening, use the
no
bgp
dampening
router configuration command without
keywords. To set dampening factors back to the default values, use the
no bgp dampening
router
configuration command with values.
Monitoring and Maintaining BGP
You can remove all contents of a particular cache, table, or database. This might be necessary when the
contents have become or are suspected to be invalid.
You can display specific statistics, such as the contents of BGP routing tables, caches, and databases.
You can use the information to get resource usage and to solve network problems. You can also display
information about node reachability and discover the routing path the packets of your device are taking
through the network.
lists the privileged EXEC commands for clearing and displaying BGP. For explanations of
the display fields, see the
Cisco IOS IP Command Reference, Volume 2 of 3: Routing Protocols,
Release 12.2
.
Step 8
clear ip bgp flap-statistics
[{
regexp
regexp
} |
{
filter-list
list
} | {
address mask
[
longer-prefix
]}
(Optional) Clear BGP flap statistics to make it less likely that a
route is dampened.
Step 9
clear ip bgp dampening
(Optional) Clear route dampening information, and unsuppress
the suppressed routes.
Step 10
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Table 38-11
IP BGP Clear and Show Commands
Command
Purpose
clear ip bgp
address
Reset a particular BGP connection.
clear ip bgp *
Reset all BGP connections.
clear ip bgp peer-group
tag
Remove all members of a BGP peer group.
show ip bgp
prefix
Display peer groups and peers not in peer groups to which the
prefix has been advertised. Also display prefix attributes such as
the next hop and the local prefix.
show ip bgp cidr-only
Display all BGP routes that contain subnet and supernet network
masks.
show ip bgp community
[
community-number
] [
exact
]
Display routes that belong to the specified communities.
show ip bgp community-list
community-list-number
[
exact-match
]
Display routes that are permitted by the community list.
show ip bgp filter-list
access-list-number
Display routes that are matched by the specified
autonomous-system path access list.
show ip bgp inconsistent-as
Display the routes with inconsistent originating autonomous
systems.
show ip bgp regexp
regular-expression
Display the routes that have an autonomous-system path that
matches the specified regular expression entered on the command
line.
show ip bgp
Display the contents of the BGP routing table.
