Monitoring And Maintaining Bgp - Cisco ME 3400 Software Configuration Manual

Chapter 35 Configuring IP Unicast Routing
Command
Step 6
show ip bgp flap-statistics [{regexp regexp} |
{filter-list list} | {address mask [longer-prefix]}]
Step 7
show ip bgp dampened-paths
Step 8
clear ip bgp flap-statistics [{regexp regexp} |
{filter-list list} | {address mask [longer-prefix]}
Step 9
clear ip bgp dampening
Step 10
copy running-config startup-config
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 of the particular structure 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 utilization and solve network problems. You can also display
information about node reachability and discover the routing path your device's packets are taking
through the network.
Table 35-8
the display fields, see the Cisco IOS IP Command Reference, Volume 2 of 3: Routing Protocols, Release
12.2.
Table 35-11 IP BGP Clear and Show Commands
Command
clear ip bgp address
clear ip bgp *
clear ip bgp peer-group tag
show ip bgp prefix
show ip bgp cidr-only
show ip bgp community [community-number] [exact]
show ip bgp community-list community-list-number
[exact-match]
show ip bgp filter-list access-list-number
OL-9639-07
lists the privileged EXEC commands for clearing and displaying BGP. For explanations of
Purpose
Reset a particular BGP connection.
Reset all BGP connections.
Remove all members of a BGP peer group.
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.
Display all BGP routes that contain subnet and supernet network
masks.
Display routes that belong to the specified communities.
Display routes that are permitted by the community list.
Display routes that are matched by the specified AS path access
list.
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
Purpose
(Optional) Monitor the flaps of all paths that are flapping. The
statistics are deleted when the route is not suppressed and is
stable.
(Optional) Display the dampened routes, including the time
remaining before they are suppressed.
(Optional) Clear BGP flap statistics to make it less likely that a
route will be dampened.
(Optional) Clear route dampening information, and unsuppress
the suppressed routes.
(Optional) Save your entries in the configuration file.
Configuring BGP
35-61