3Com Router 3031, Справочник по командам

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674 C
HAPTER
6: R
OUTING
P
ROTOCOL
Description
Using the filter-policy gateway import command, you can filter the routing
information advertised by a specified router. Using the undo filter-policy gateway
import command, you can cancel the setting of the filtering condition.
Using the filter-policy import command, you can configure the condition for
filtering the routing information. Using the undo filter-policy import command,
you can cancel the setting of filter condition.
By default, the received routing information is not filtered.
In some cases, it may be required that only the routing information meeting some
conditions can be received. Then, the filter-policy command can be used to set the
filtering conditions.
acl-number is the access control list number used for filtering
the destination addresses of the routing information and ip-prefix parameter is
used to filter the routing information specified destination address.
For the related command, see filter-policy export.
Example
Define the filtering rule for receiving routing information of RIP. Only the routing
information filtered through the address prefix list p1 can be received by RIP.
[3Com-rip] filter-policy ip-prefix p1 import
if-match acl
Syntax
if-match acl acl-number
undo if-match acl acl-number
View
Routing policy view
Parameter
■
acl-number: Specifies the number of the access control list used for filtering.
■
ip-prefix-name: Specifies the name of the prefix address list used for filtering.
Description
Using the if-match acl command, you can configure the IP address range to
match the route-policy. Using the undo if-match acl command, you can cancel the
setting of the match rule.
Filtering is performed by quoting an ACL.
For the related command, see if-match ip-prefix, if-match interface, if-match ip
next-hop, if-match cost, if-match tag, route-policy, apply ip-address, apply cost,
apply local-preference, apply origin, and apply tag.
Example
Display how to define one if-match clause. When the clause is used for filtering
route information, the route information filtered by route destination address
through address ACL 10 is enabled to pass the if-match clause.
[3Com-route-policy] if-match acl 10