Vmps Database Configuration File; Default Vmps Client Configuration; Vmps Configuration Guidelines - Cisco Catalyst 2950 Software Configuration Manual

Configuring VMPS

VMPS Database Configuration File

The VMPS contains a database configuration file that you create. This ASCII text file is stored on a
switch-accessible TFTP server that functions as a server for VMPS. The file contains VMPS
information, such as the domain name, the fallback VLAN name, and the MAC-address-to-VLAN
mapping. The switch cannot act as the VMPS, but you can use a Catalyst 5000 or Catalyst 6000 series
switch as the VMPS.
You can configure a fallback VLAN name. If you connect a device with a MAC address that is not in the
database, the VMPS sends the fallback VLAN name to the client. If you do not configure a fallback
VLAN and the MAC address does not exist in the database, the VMPS sends an access-denied response.
If the VMPS is in secure mode, it sends a port-shutdown response.
Whenever port names are used in the VMPS database configuration file, the server must use the switch
convention for naming ports. For example, Fa0/4 is fixed Fast Ethernet port number 4. If the switch is a
cluster member, the command switch adds the name of the switch before the type. For example,
es3%Fa0/4 refers to fixed Fast Ethernet port number 4 on member switch 3. When port names are
required, these naming conventions must be followed in the VMPS database configuration file when it
is configured to support a cluster.

Default VMPS Client Configuration

Table 16-6
Table 16-6
Feature
VMPS domain server
VMPS reconfirm interval
VMPS server retry count
Dynamic ports

VMPS Configuration Guidelines

These guidelines and restrictions apply to dynamic access port VLAN membership:
•
•
•
•
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
16-26
shows the default VMPS and dynamic port configuration on client switches.
Default VMPS Client and Dynamic Port Configuration
You should configure the VMPS before you configure ports as dynamic.
The communication between a cluster of switches and VMPS is managed by the command switch
and includes port-naming conventions that are different from standard port names. For the
cluster-based port-naming conventions, see the
page 16-26.
When you configure a port as a dynamic access port, the spanning-tree Port Fast feature is
automatically enabled for that port. The Port Fast mode accelerates the process of bringing the port
into the forwarding state.
IEEE 802.1X ports cannot be configured as dynamic access ports. If you try to enable IEEE 802.1X
on a dynamic-access (VQP) port, an error message appears, and IEEE 802.1X is not enabled. If you
try to change an IEEE 802.1X-enabled port to dynamic VLAN assignment, an error message
appears, and the VLAN configuration is not changed.
Default Setting
None
60 minutes
3
None configured
"VMPS Database Configuration File" section on
Chapter 16 Configuring VLANs
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