Applying Ipv6 Acls To Layer 2 And 3 Interface - Cisco Catalyst 4500 Series Configuration Manual

Chapter 51 Configuring Network Security with ACLs

Applying IPv6 ACLs to Layer 2 and 3 Interface

To apply an IPv6 ACL to a Layer 3 interface, perform the following task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# interface interface-type
slot/interface
Step 3
Switch(config-if)# ipv6 traffic-filter
ipv6-acl {in|out}
Note IPv6 ACLs are supported on Layer 3 interfaces and on Layer 2 ports using the ipv6 traffic-filter
command.
The following example applies the extended-named IPv6 ACL simple-ipv6-acl to SVI 300 routed ingress
traffic:
Switch# configure terminal
Switch(config)# interface vlan 300
Switch(config-if)# ipv6 traffic-filter simple-ipv6-acl in
Output IPv6 ACLs with ACE to match on the ICMP option fail on a switch.
Note
The following conditions may cause a RACL to malfunction (no workaround):
•
•
The following examples of nonfunctioning RACLs:
IPv6 access list a1
IPv6 access list a2
permit icmp 2020::/96 any nd-ns sequence 10
Configuring VLAN Maps
This section includes these topics:
•
•
•
•
This section describes how to configure VLAN maps, which is the only way to control filtering within
a VLAN. VLAN maps have no direction. To filter traffic in a specific direction by using a VLAN map,
you need to include an ACL with specific source or destination addresses. If there is a match clause for
OL-25340-01
ACLs are applied on the output direction of the interface.
IPv6 ACL contain Ace to match on the ICMP option fields (ICMP Type or ICMP Code).
permit icmp any any nd-ns sequence 10
deny ipv6 any any sequence 20
deny ipv6 any any sequence 20
VLAN Map Configuration Guidelines, page 51-18
Creating and Deleting VLAN Maps, page 51-19
Applying a VLAN Map to a VLAN, page 51-21
Using VLAN Maps in Your Network, page 51-22
Purpose
Enters global configuration mode.
Specifies the interface to be configured.
interface-type must be a Layer 3 interface.
Note
Applies the IPv6 ACL to a Layer 3 interface.
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
Applying IPv6 ACLs to Layer 2 and 3 Interface
51-17