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Cisco Catalyst Blade Switch 3120 for HP Command Reference
OL-12248-01
Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
ipv6 access-list
ipv6 access-list
Use the ipv6 access-list global configuration command on the switch stack or on a standalone switch to
define an IPv6 access list and to place the switch in IPv6 access list configuration mode. To remove the
access list, use the no form of this command.
ipv6 access-list access-list-name
no ipv6 access-list access-list-name
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database
Management (SDM) template on the switch.
Syntax Description
Defaults No IPv6 access list is defined.
Command Modes Global configuration
Command History
Usage Guidelines To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 {default | vlan)
global configuration command and reload the switch.
The ipv6 access-list command is similar to the ip access-list command, but it is IPv6-specific.
Note IPv6 ACLs are defined by a unique name (IPv6 does not support numbered ACLs). An IPv4 ACL and
an IPv6 ACL cannot share the same name.
See the deny (IPv6 access-list configuration) and permit (IPv6 access-list configuration) commands
for more information on filtering IPv6 traffic based on IPv6 option headers and optional, upper-layer
protocol-type information. See the “Examples” section for an example of a translated IPv6 ACL
configuration.
Note Every IPv6 ACL has implicit permit icmp any any nd-na, permit icmp any any nd-ns, and deny ipv6
any any statements as its last match conditions. The two permit conditions allow ICMPv6 neighbor
discovery. To disallow ICMPv6 neighbor discovery and to deny icmp any any nd-na or icmp any any
nd-ns, there must be an explicit deny entry in the ACL. For the implicit deny ipv6 any any statement
to take effect, an IPv6 ACL must contain at least one entry.
access-list-name Name of the IPv6 access list. Names cannot contain a space or quotation
mark or begin with a numeric.
Release Modification
12.2(40)EX This command was introduced.
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