Configuring Vlan Maps - Cisco Catalyst 4500 series Administration Manual

Configuring VLAN Maps

IPv6 ACLs are supported on Layer 3 interfaces and on Layer 2 ports using the ipv6 traffic-filter
Note
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):
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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:
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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
that type of packet (IP or MAC) in the VLAN map, the default action is to drop the packet if the packet
does not match any of the entries within the map. If there is no match clause for that type of packet, the
default is to forward the packet.
To create a VLAN map and apply it to one or more VLANs, follow these steps:
Step 1 Create the standard or extended IP ACLs or named MAC extended ACLs that you want to apply to the
VLAN.
Enter the vlan access-map global configuration command to create a VLAN ACL map entry.
Step 2
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
54-18
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 54-19
Creating and Deleting VLAN Maps, page 54-20
Applying a VLAN Map to a VLAN, page 54-22
Using VLAN Maps in Your Network, page 54-23
Chapter 54 Configuring Network Security with ACLs
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