ADTRAN AOS Version R10.1.0 Command Reference Manual page 1067

Command Reference Guide
ip prefix-list <name> seq <number>
Use the ip prefix-list seq command to specify a prefix to be matched or a range of mask lengths. Use the
no form of this command to remove a prefix list. Variations of this command include:
ip prefix-list <name> seq <number> deny <network ip /length>
ip prefix-list <name> seq <number> deny <network ip /length> ge <value>
ip prefix-list <name> seq <number> deny <network ip /length> le <value>
ip prefix-list <name> seq <number> permit <network ip /length>
ip prefix-list <name> seq <number> permit <network ip /length> ge <value>
ip prefix-list <name> seq <number> permit <network ip /length> le <value>
Syntax Description
<name>
<number>
permit <network ip /length>
deny <network ip /length>
le <value>
ge <value>
Default Values
If no ge or le parameters are specified, an exact match is assumed. If only ge is specified, the range is
assumed to be from ge-value to 32. If only le is specified, the range is assumed to be from len to le-value.
Command History
Release 8.1
Functional Notes
This command specifies a prefix to be matched. If the network address is entered without specifying a
range for prefix lengths, the router assumes that the route must be an exact match. For example, if the
command ip prefix-list TEST seq 5 permit 10.1.0.0/16 is entered, the BGP interface will only accept
routes to the entire 10.1.0.0 /16 subnet. It will not accept routes to a network, such as 10.1.1.0/ 24, which
was subdivided from the /16 network.
Optionally, this command may specify a range of mask lengths. The following rule must be followed: len <
ge-value < le-value. A filter that exactly matches a prefix length can be created by entering the length for
both the ge and le values. A prefix list with no entries allows all routes. A route that does not match any
entries in a prefix list is dropped. As soon as a route is permitted or denied, there is no further processing
of the rule in the prefix list. A route that is denied at the beginning entry of a prefix list will not be allowed,
even if it matches a permitting entry further down the list.
60000CRG0-35E
Specifies a particular prefix list.
Specifies the entry's unique sequence number that determines the
processing order. Lower numbered entries are processed first. Range is
1 to 4294967294.
Permits access to entries matching the specified network IP address and
the corresponding network prefix length (for example, 10.10.10.1 /24).
Denies access to entries matching the specified network IP address and the
corresponding network prefix length (for example, 10.10.10.1 /24).
Specifies the upper end of the range. Range is 0 to 32.
Specifies the lower end of the range. Range is 0 to 32.
Command was introduced.
Copyright © 2012 ADTRAN, Inc.
Global Configuration Mode Command Set
1067