Route policy application, Route policy configuration task list, Defining filters – H3C Technologies H3C S7500E Series Switches User Manual
Page 360: Prerequisites, Defining an ip-prefix list, Define an ipv4 prefix list
12-3
Follow these guidelines when configuring if-match and apply clauses.
z
If you want to implement route filtering only, you do not need to configure apply clauses.
z
If you do not configure any if-match clauses for a permit-mode node, the node permits all routes
to pass.
z
Configure a permit-mode node containing no if-match or apply clauses behind multiple
deny-mode nodes to allow unmatched routes to pass.
Route Policy Application
A route policy is applied on a router to filter routes when they are received, advertised or redistributed
and to modify some attributes of permitted routes.
Route Policy Configuration Task List
Complete the following tasks to configure a route policy:
Task
Defining an Extended Community List
Defining Filters
Prerequisites
Before configuring this task, you need to decide on:
z
IP-prefix list name
z
Matching address range
z
Extcommunity list sequence number
Defining an IP-prefix List
Define an IPv4 prefix list
Identified by name, an IPv4 prefix list can comprise multiple items. Each item specifies a prefix range
to match and is identified by an index number.