SROS Command Line Interface Reference Guide

Global Configuration Mode Command Set

 

 

ip prefix-list <listname> seq <sequence#> [permit deny] <network/len> [le <le-value>ge <ge-value>]

Use the ip prefix-list seq command to specify a prefix to be matched or a range of mask lengths.

Syntax Description

<listname>

Specifies a particular prefix list.

<sequence#>

Specifies the entry's unique sequence number which determines the processing

 

order. Lower-numbered entries are processed first. Range: 1 to 4294967294.

permit

Permits access to matching entries.

deny

Denies access to matching entries.

<network/len>

Specifies the network number and network mask length.

le <le-value>

Specifies the upper end of the range. Range: 0 to 32.

ge <ge-value>

Specifies the lower end of the range. Range: 0 to 32.

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 Modes

(config)#

Global Configuration Mode

Functional Notes

This command specifies a prefix to be matched. Optionally, it may specify a range of mask lengths. The following rule must be followed: len < ge-value < le-value. 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.

Usage Examples

The following example creates a prefix list entry in the prefix list test matching only the 10.0.0.0/8 network: (config)#ip prefix-list test seq 5 deny 10.0.0.0/8

The following example creates a prefix list entry in the prefix list test matching any network of length 24 or less:

(config)#ip prefix-list test seq 10 permit 0.0.0.0/0 le 24

5991-2114

© Copyright 2005 Hewlett-Packard Development Company, L.P.

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HP 7000 dl Router manual Deny, Config#ip prefix-list test seq 10 permit 0.0.0.0/0 le