Specifications

26-26
Catalyst 2970 Switch Software Configuration Guide
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Chapter 26 Configuring Network Security with ACLs
Configuring VLAN Maps
Applying a VLAN Map to a VLAN
Beginning in privileged EXEC mode, follow these steps to apply a VLAN map to one or more VLANs:
To remove the VLAN map, use the no vlan filter mapname vlan-list list global configuration command.
This example shows how to apply VLAN map 1 to VLANs 20 through 22:
Switch(config)# vlan filter map 1 vlan-list 20-22
Using VLAN Maps in Your Network
This section describes some typical uses for VLAN maps and includes these topics:
• Wiring Closet Configuration, page 26-26
• Denying Access to a Server on a VLAN, page 26-28
Wiring Closet Configuration
In a wiring closet configuration, the switch can support a VLAN map and a QoS classification ACL. In
Figure 26-3, assume that Host X and Host Y are in different VLANs and are connected to wiring closet
switches A and C. Traffic from Host X to Host Y is eventually being routed by Switch B, which has
routing enabled. Traffic from Host X to Host Y can be access-controlled at the traffic entry point,
Switch A.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
vlan filter mapname vlan-list list Apply the VLAN map to one or more VLAN IDs.
The list can be a single VLAN ID (22), a consecutive list (10-22), or a string
of VLAN IDs (12, 22, 30). Spaces around the comma and hyphen are
optional.
Step 3
show running-config Display the access list configuration.
Step 4
copy running-config startup-config (Optional) Save your entries in the configuration file.