Using A Prefix Tree - Juniper JUNOSE 11.0.X IP SERVICES Configuration Manual

Use the ip prefix-tree command to define an IP prefix tree. Use the prefix-tree
keyword with the match ip address or match ip next-hop commands to add a
clause to a route map. Use the match-set summary prefix-tree command to specify
the prefix tree that summarizes routes for a particular route map.

Using a Prefix Tree

The following example creates a prefix tree that permits routes with a prefix length
of 24 or larger in the 10.10.2.0/24 network:
clear ip prefix-tree
ip prefix-tree
match ip address
match ip next-hop
host1(config)#ip prefix-tree xyz permit 10.10.2.0/24
Use to clear all hit counts in the prefix trees or the specified entry from the
specified prefix tree. (The router increments the hit count by 1 each time an
entry matches.)
Example
host1#clear ip prefix-tree xyz
There is no no version.
See clear ip prefix-tree.
Use to create a prefix tree for best route filtering; specifies a tree entry a deny
or permit clause for a network address.
The prefix tree name can be up to 32 characters long.
Example
host1(config)#ip prefix-tree boston42 permit 10.10.2.0/24
Use the no version to remove the specified prefix tree or the specified tree entry.
See ip prefix-tree.
Use with the prefix-tree keyword to match routes that have a destination network
number address that is permitted by the prefix tree.
Example
host1(config-route-map)#match ip address prefix-tree xyz
Use the no version to delete the match clause from a route map or a specified
value from the match clause.
See match ip address.
Chapter 1: Configuring Routing Policy
Prefix Trees
37