3Com Router 3031, Справочник по командам

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608 C
HAPTER
6: R
OUTING
P
ROTOCOL
View
IS-IS view
Parameter
■
acl-number: Specifies the number of the access control list, ranging from 1 to
199.
■
protocol: Specifies the protocols that distribute routing information, including
direct, static, rip, bgp, ospf, ospf-nssa and ospf-ase at present. Without this
parameter, all the distributed routes will be filtered.
Description
Using the filter-policy export command, you can configure to filter the routes
distributed by IS-IS. Using the undo filter-policy export command, you can cancel
the filtering for the exporting routes.
By default, IS-IS does not filter any distributed routing information.
In some cases, it may be required that only the routing information meeting some
conditions can be advertised. Then, the filter-policy command can be used to set
the filtering conditions for the routing information to be advertised. Only the
routing information passing the filtering can be advertised.
For the related command, see filter-policy import.
Example
Use acl 6 to filter the routes distributed by IS-IS.
[3Com-isis] filter-policy 6 export
filter-policy import
Syntax
filter-policy acl-number import
undo filter-policy acl-number import
View
IS-IS view
Parameter
■
acl-number: Specifies the number of the access control list, ranging from 1 to
199.
Description
Using the filter-policy import command, you can configure to filter the routes
received by IS-IS. Using the undo filter-policy import command, you can configure
not to filter the received routes.
By default, IS-IS does not filter the received routing information.
In some cases, only the routing information meeting the specified conditions will
be accepted. You can configure thefilter-policy to specify the filter conditions so as
to accept the desired routing information only.
For the related command, see filter-policy export.