User Manual

NETGEAR M4500 Series Switches CLI Command Reference Manual 731
Default No description is configured by default.
Mode Global Config
6.9.2.4. ipv6 prefix-list
To create a IPv6 prefix list or add a prefix list entry, use the ipv6 prefix-list command in Global Configuration
mode. 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 assume 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 command "match ipv6
address" A route map may contain both IPv4 and IPv6 prefix lists. If a route being matched is an IPv6 route, only
the IPv6 prefix lists are matched.
Up to 128 prefix lists may be configured. The maximum number of statements allowed in prefix list is 64. These
numbers indicate only IPv6 prefix lists. IPv4 prefix lists may be configured in appropriate numbers
independently.
To delete a IPv6 prefix list or a statement in a prefix list, use the no form of this command. The command no
ipv6 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 ipv6 prefix-list <list-name> {[seq <seq number>] {permit | deny} ip6-prefix/prefix-length [ge <length>]
[le <length>] | description <text> | renumber [<renumber-interval> [<first-statement-number>]]}
no ipv6 prefix-list <list-name> {[seq <seq number>] {permit | deny} ip6-prefix/prefix-length [ge
<length>] [le <length>] | description}
Fields
Definition
list-name
The text name of the prefix list. Up to 32 characters.
seq number
(Optional) The sequence number for this prefix list statement. Prefix list
statements are ordered from lowest sequence number to highest and applied in
that order. If you do not specify a sequence number, the system will
automatically select a sequence number five larger than the last sequence
number in the list. Two statements may not be configured with the same
sequence number. The value ranges from 1 to 4,294,967,294.
permit
Permit routes whose destination prefix matches the statement.
deny
Deny routes whose destination prefix matches the statement.
ipv6-prefix/prefix-length
Specifies the match criteria for routes being compared to the prefix list
statement. The ipv6-prefix can be any valid IPv6 prefix where the address is
specified in hexadecimal using 16-bit values between colons. The prefix-length is
the length of the IPv6 prefix, given as a decimal value that indicates how many of
the high-order contiguous bits of the address comprise the prefix (the network
portion of the address). A slash mark must precede the decimal value.