Configuration Guidelines; Configuring Dynamic Port Vlan Membership With Auxiliary Vlans - Cisco WS-C4003 - Catalyst 4000 Chassis Switch Software Configuration Manual

Chapter 12 Configuring Dynamic Port VLAN Membership with VMPS
Note For detailed information on auxiliary VLANs and Cisco voice-over-IP networks, refer to the
"Configuring a Voice-over-IP Network" chapter in the Catalyst 6000 Family Software Configuration
Guide.

Configuration Guidelines

These guidelines and restrictions apply to configuring dynamic port VLAN membership for auxiliary
VLANs:
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Configuring Dynamic Port VLAN Membership with Auxiliary VLANs

This example shows how to add voice ports to auxiliary VLANs and specify an encapsulation type:
Console> (enable) set port auxiliaryvlan 5/9 222
Auxiliaryvlan 222 configuration successful.
AuxiliaryVlan AuxVlanStatus Mod/Ports
------------- ------------- -------------------------
222
Console> (enable)
Console> (enable) set port auxiliaryvlan 5/9 untagged
Port 2/48 allows the connected device send and receive untagged packets and without 802.1p
priority.
Console> (enable)
This example shows how to specify port 5/9 as a dynamic port:
Console> (enable) set port membership 5/9 dynamic
Warning: Auxiliary Vlan set to dot1p|untagged on dynamic port. VMPS will be queried for IP
phones.
Port 5/9 vlan assignment set to dynamic.
Spantree port fast start option enabled for ports 5/9.
Console> (enable)
78-12647-02
Configuration of the native VLAN ID is dynamic for the PC connected to the access port of the IP phone.
Configuration of the auxiliary VLAN ID is not dynamic, you need to configure it manually. As you
manually configure the auxiliary VLAN ID, the VMPS server is queried for packets coming from the PC,
but not for packets coming from the IP phone.
All packets except CDP packets from the IP phone are tagged with the auxiliary VLAN ID. All such
tagged packets are considered to be packets from the phone, and all other packets are considered to
be packets from the PC.
When configuring the auxiliary VLAN ID with untagged frames, you need to configure the VMPS
server with the IP phone's MAC address (see the
Configuration Examples" section on page 12-7
For dynamic ports, the auxiliary VLAN ID cannot be the same as the native VLAN ID assigned by
VMPS for the dynamic port.
Read the "Dynamic Port VLAN Membership and VMPS Configuration Guidelines" section on
page 12-3 prior to doing any port configuration.
active
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
Dynamic Port VLAN Membership with Auxiliary VLANs
"Dynamic Port VLAN Membership with VMPS
for information on configuring VMPS).
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12-11