Dynamic Port Vlan Membership With Auxiliary Vlans - Cisco WS-C2950SX-48-SI Configuration Manual

Dynamic Port VLAN Membership with Auxiliary VLANs

After entering these commands, the file Bldg-G.db is downloaded to Switch 1. Switch 1 becomes the
VMPS server.
Step 2 Configure Switch 2 and Switch 3 as backup VMPS servers.
a.
b.
c.
After you enter these commands, the file Bldg-G.db is downloaded to each switch.
Configure the VMPS server addresses on each VMPS client.
Step 3
a.
b.
c.
Configure port 3/1 on Switch 2 as dynamic.
Step 4
Console> (enable) set port membership 3/1 dynamic
Connect End Station 2 on port 3/1.
Step 5
When End Station 2 sends a packet, Switch 2 sends a query to the primary VMPS server, Switch 1.
Switch 1 responds with a message to assign port 3/1 to the VLAN specified in the VMPS database.
Because spanning tree PortFast mode is enabled by default on dynamic ports, port 3/1 connects
immediately and enters forwarding mode.
Repeat Steps 2 and 3 to configure the VMPS server addresses and assign dynamic ports on each VMPS
Step 6
client switch.
Dynamic Port VLAN Membership with Auxiliary VLANs
This section describes how to configure a dynamic port to belong to two VLANs—a native VLAN and
an auxiliary VLAN. This section uses the following terminology:
•
•
•
•
Prior to software release 6.2(1), dynamic ports could only belong to one VLAN. You could not enable the
dynamic port VLAN feature on ports that carried a native VLAN and an auxiliary VLAN.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide
12-14
Configure the IP address of the TFTP server on which the ASCII file resides:
Console> (enable) set vmps tftpserver 172.20.26.152 Bldg-G.db
Enable VMPS:
Console> (enable) set vmps state enable
Repeat Steps a and b for switch 3.
Configure the IP address for the primary VMPS server:
Console> (enable) set vmps server 172.20.26.150 primary
Configure the IP addresses for the backup VMPS servers:
Console> (enable) set vmps server 172.20.26.152
Console> (enable) set vmps server 172.20.26.159
Verify the VMPS server addresses:
Console> (enable) show vmps server
Auxiliary VLAN—Separate VLAN for IP phones
Native VLAN—Traditional VLAN for data
Auxiliary VLAN ID—VLAN ID of an auxiliary VLAN
Native VLAN ID—VLAN ID of a native VLAN
Chapter 12 Configuring Dynamic VLAN Membership with VMPS
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Release 8.1
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