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Displaying prefix list information – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Routing Configuration Guide

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Displaying prefix list information

These commands permit the inclusion of routes with the IPv6 prefix 2001:db8::/32 in RIPng
routing updates sent from Ethernet interface 3/1.

Syntax: [no] ipv6 prefix-list name [seq sequence-number] deny ipv6-prefix/prefix-length | permit

ipv6-prefix/prefix-length | description string [ge ge-value] [le le-value]

The name parameter specifies the prefix list name. You use this name when using the prefix list as
input to command or route map.

The seq seq-number parameter is optional and specifies the IPv6 prefix list’s sequence number. If
you do not specify a sequence number, the software numbers them in increments of 5, beginning
with prefix list entry 5. The Brocade device interprets the prefix list entries in numerical order,
beginning with the lowest sequence number.

The description string parameter is a text string describing the prefix list.

The deny ipv6-prefix/prefix-length | permit ipv6-prefix/prefix-length parameters specify the action
the Brocade device takes if a packet contains a route specified in this prefix list.

You must specify the ipv6-prefix parameter in hexadecimal using 16-bit values between colons as
documented in RFC 2373.

You must specify the prefix-length parameter as a decimal value. A slash mark (/) must follow the
ipv6-prefix parameter and precede the prefix-length parameter.

The prefix list matches only on the specified prefix/prefix length unless you use the ge prefix-length
or le prefix-length parameters. (See below.)

You can specify a range of prefix lengths for prefixes that are more specific than
ipv6-prefix/prefix-length.

If you specify only ge ge-value, then the range is from ge-value to 128.

If you specify only le le-value, then the range is from le-value to the prefix-length parameter.

The ge-value or le-value you specify must meet the following condition.

prefix-length < ge-value <= le-value <= 128

If you do not specify ge ge-value or le le-value, the prefix list matches only on the exact prefix you
specify with the ipv6-prefix/prefix-length parameter.

To delete the prefix list entry, use the no form of this command.

Displaying prefix list information

To display the IPv6 prefix lists configured on a Brocade device, enter the following command at any
level of the CLI.

Brocade(config)# show ipv6 prefix-lists

ipv6 prefix-list routesfor2001: 1 entries

seq 5 permit 2001:db8::/32

Syntax: show ipv6 prefix-lists [name]

The name parameter restricts the display to the specified prefix list. Specify the name of the prefix
list that you want to display.