3Com 10014299 manual Debugging BGP, Filter Routing Information Being Advertised by BGP

470CHAPTER 30: CONFIGURING BGP

Configure Filtering Route Information being Advertised by BGP

Table 557 Filter Routing Information Being Advertised by BGP

Operation	Command
Filter routing information being advertised	filter-policy {acl-number
by BGP	ip-prefix prefix-list-name} export [
	protocol ]
Cancel filtering routing information being	undo filter-policy {acl-number
advertised by BGP	ip-prefix prefix-list-name} export [
	protocol ]
By default, BGP does not filter any route information that is received or advertised.
protocol specifies the routing domain that can will be filtered. At present, BGP
can filter route domains such as connected, static, OSPF and OSPF-ASE.
See “Configure Route Filter” of “Configuration of IP Routing Policy” for details.

Resetting BGP After modifying a BGP configuration, you must turn off the current BGP Connections connections and reset BGP connections to make the new configuration effective.

Perform the following configurations in system view.

Table 558 Reset BGP Connections

	Operation	Command
	Reset BGP connection	reset bgp { all peer-id }
	Clear routing flapping attenuation	reset bgp dampening [ network-address
	information and cancel the dampening	[ mask ] ]
	over the routes.
	Reset the BGP connection of a specified	reset bgp group group-name
	peer or all members of a peer group
Displaying and	Table 559 Display and Debug BGP
Debugging BGP
	Operation	Command
	Display BGP path information	display bgp paths
		as-regular-expression
	Display AS filtered path information in	display ip as-path-acl acl-number
	BGP
	Display the routing information of the	display bgp routing-table ip-address
	specified IP address in the routing table.	[ mask ]
	Display CIDR route	display bgp routing-table cidr
	Display routing information of the	display bgp routing-table community [
	specified BGP community	[aa:nn ] [ no-export-subconfed ] [
		no-advertise] [ no-export ] ] [
		exact-match ]
	Display routing information of permitted	display bgp routing-table comm-list
	in the specified BGP community list	community-list-number [ exact-match]
	Display Dampening route	display bgp routing-table dampened
	Display the route matching the specified	display bgp routing-table acl
	access list	acl-number