3Com Switch 8800 Configuration Guide
Chapter 22 IP Routing Policy Configuration
22-3
Configuring ip-prefix
z
Configuring the AS Path List
z
Configuring a Community Attribute List
Note:
For the configuration of ACL, refer to the QoS/ACL operation part of this manual.
2)
Applications of routing policies include:
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Importing Routing Information Discovered by Other Routing Protocols
z
Configuring Route Filtering
22.2.1 Configuring a Route-policy
A route-policy can comprise multiple nodes. Each node is a unit for matching operation.
The nodes will be tested against by
node
-
number
.
Each node consists of a group of
if-match
clauses and
apply
clauses.
z
The
if-match
clauses define the matching rules. The different
if-match
clauses
for a node have the relationship of “AND”. That is, the route must satisfy all the
if-match
clauses for the node to match the node before passing this node.
z
The
apply
clauses define the executed action after the routing information passes
the matching test. That is, the clause sets the routing information attribute.
I. Defining a route-policy
Perform the following configuration in system view.
Table 22-1
Define a route-policy
Operation
Command
Enter Route policy view
route-policy
route
-
policy
-
name
{
permit
|
deny
}
node
node
-
number
Remove the specified route-policy
undo route-policy
route
-
policy
-
name
[
permit
|
deny
|
node
node
-
number
]
The
permit
keyword specifies the matching mode for a defined node in the route-policy
to be in permit mode. If a route satisfies all the
if-match
clauses of the node, it will pass
the filtering of the node, and the
apply
clauses for the node will be executed without
taking the test of the next node. If not, however, the route should take the test of the
next node.
The
deny
keyword
specifies the matching mode for a defined node in the route-policy
to be in deny mode. In this mode, the
apply
clauses will not be executed. If a route
