Reference Guide

152 | Access Control Lists (ACL)
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Usage
Information
Prefix lists redistribute OSPF and RIP routes meeting specific criteria. For related RIP commands, see
Chapter 36, Router Information Protocol (RIP). For related OSPF commands supported on all three
platforms, see Chapter 29, Open Shortest Path First (OSPFv2).
Prior to 7.8.1.0, names are up to 16 characters long.
Related
Commands
permit
s z
Configure a filter that passes packets meeting the criteria specified.
Syntax
permit ip-prefix [ge min-prefix-length] [le max-prefix-length]
To delete a forward filter, use the no permit ip-prefix command.
Parameters
Command Modes
PREFIX-LIST
Command
History
Usage
Information
Sequence numbers for this filter are automatically assigned starting at sequence number 5.
If the options ge or le are not used, only packets with an exact match to the prefix are filtered.
Related
Commands
seq
s z
Assign a sequence number to a deny or permit filter in a prefix list while configuring the filter.
Syntax
seq sequence-number {deny | permit} {any} | [ip-prefix /nn {ge min-prefix-length} {le
max-prefix-length}] | [bitmask number]
To delete a specific filter, use the no seq sequence-number {deny | permit} {any} | [ip-prefix
{ge min-prefix-length} {le max-prefix-length}] | [bitmask number].
show ip route list Display IP routes in an IP prefix list.
show ip prefix-list summary Display a summary of the configured prefix lists.
S6000
ip-prefix
Specify an IP prefix in the network/length format. For example, 35.0.0.0/8
means match the first 8 bits of address 35.0.0.0.
ge min-prefix-length (OPTIONAL) Enter the keyword ge followed by the minimum prefix
length, which is a number from zero (0) to 32.
le max-prefix-length
(OPTIONAL) Enter the keyword le followed by the maximum prefix length,
which is a number from zero (0) to 32.
Version 9.0.2.0 Introduced on the S6000
Version 8.3.11.1 Introduced on the Z9000.
Version 7.6.1.0 Support added for S-Series
deny Configure a filter to drop packets.
seq Configure a drop or permit filter with a specified sequence number.
S6000