3Com Router 3031, Справочник по командам

Страница: 644 / 838

644 C
HAPTER
6: R
OUTING
P
ROTOCOL
View
BGP unicast view, BGP multicast view, VPNv4 view, VPN instance view
Parameter
■
acl-number: Specifies the number of access control list matching the
destination address field of routing information, ranging from 1 to 199.
■
ip-prefix ip-prefix-name: Address prefix list name. The matched object is the
destination address domain of the routing information, ranging from 1 to 19.
■
gateway ip-prefix-name: Address prefix list name of the neighboring router.
The matched object is the routing information distributed by the specified
neighboring router, ranging from 1 to 19.
Description
Using the filter-policy gateway import command, you can filter the learned routing
information advertised by the specified address. Using the undo filter-policy
gateway import command, you can remove the filtering to the routing
information advertised by the specified address.
Using the filter-policy import command, you can filter the received global routing
information. Using the undo filter-policy import command, you can remove the
filtering to the received global routing information.
By default, the received routing information is not filtered.
This command can be used to filter the routes received by BGP and determines
whether to add the routes to the BGP routing table.
Example
Display how to use acl 3 to filter the routing information received by BGP.
[3Com-bgp] filter-policy 3 import
group
Syntax
group group-name { [ internal ] | external }
undo group group-name
View
BGP view
Parameter
■
group-name: Specifies the name of peer group. It can be described in character
and numeral with the length being 1 to 47.
■
internal: Creates an internal peer group.
■
external: Creates an external peer group, including other sub AS groups in the
confederation.
Description
Using the group command, you can establish a peer group. Using the undo group
command, you can delete the configured peer group.
The use of BGP peer group is for the convenience of the user’s configuration.
When the user starts several peers with the same configuration, a peer group can