Reference Guide

no ip prefix-list
To delete a prefix list or a statement in a prefix list, use the no form of this command. The command no
ip prefix-list list-name deletes the entire prefix list. To remove an individual statement from a prefix
list, you must specify the statement exactly, with all its options.
Format no ip prefix-list list-name [seq number] { permit | deny }
network/length [ge length] [le length]
Mode Global Configuration
ip prefix-list description
To apply a text description to a prefix list, use the ip prefix-list description command in Global
Configuration mode.
Default No description is configured by default.
Format ip prefix-list list-name description text
Mode Global Configuration
Parameter Description
list-name
The text name of the prefix list.
text
Text description of the prefix list. Up to 80 characters.
no ip prefix-list description
To remove the text description, use the no form of this command.
Format
no ip prefix-list list-name description
Mode Global Configuration
ipv6 prefix-list
Use this command to create IPv6 prefix lists. An IPv6 prefix list can contain only ipv6 addresses. Prefix
lists allow matching of route prefixes with those specified in the prefix list. Each prefix list includes of a
sequence of prefix list entries ordered by their sequence numbers. A router sequentially examines each
prefix list entry to determine if the route’s prefix matches that of the entry. For IPv6 routes, only IPv6
prefix lists are matched. An empty or nonexistent prefix list permits all prefixes. An implicit deny is
assumed if a given prefix does not match any entries of a prefix list. Once a match or deny occurs the
router does not go through the rest of the list. An IPv6 prefix list may be used within a route map to
match a route’s prefix using the match ipv6 address command. A route map may contain both
IPv4 and IPv4 prefix lists. If a route being matched is an IPv6 route, only the IPv6 prefix lists are
matched.
Routing Commands
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