Setup guide

General Information
Summary
Prefix lists are used to filter routes received from or sent to other routers.
Specifications
Packages required: routing
License required: level1
routing prefix-list
Hardware usage: Not significant
Related Documents
• Package Management
• IP Addresses and ARP
• Routes, Equal Cost Multipath Routing, Policy Routing
•
RIP
• BGP
Description
Filtering by prefix list involves matching the prefixes of routes with those listed in the prefix list.
When there is a match, the route is used. The prefix lists are used when specifying the BGP peers
under /routing bgp peer or RIP interfaces under /routing rip interface.
To match a prefix-list entry, a route should have its prefix (i.e. destination address) matching prefix
property of the entry, and it should have the length of its prefix (i.e. mask of destination address)
matching prefix-length property of the entry.
Setup
routing prefix-list
Property Description
name (name; default: "") - a name for the prefix list
default-action (accept | reject; default: accept) - default action for all members of the list
Notes
An empty prefix list matches all prefixes
Example
To add a cybernet list that rejects the routes by default:
[admin@Wandy] routing prefix-list> add name=cybernet default-action=reject
[admin@Wandy] routing prefix-list> print
# NAME DEFAULT-ACTION
0 cybernet reject
[admin@Wandy] routing prefix-list>