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Catalyst2950 and Catalyst2955 Switch Software Configuration Guide
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Chapter17 Configuring VLANs Configuring VMPS
Default VMPS Client Configuration
Table17-6 shows the de fault VM PS and dy nami c po rt c on figuration on clie nt sw itch es.
VMPS Configuration Guidelines
These guidelines and restrictions apply to dynamic access port VLAN membership:
•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 “VMPS Database Configuration File” section on
page 17-26.
•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.
•802.1X ports cannot be configured as dynamic access ports. If you try to enable 802.1X on a
dynamic-access (VQP) port, an error message appears, and 802.1X is not enabled. If you try to
change an 802.1X-enabled port to dynamic VLAN assignment, an error message appea rs, and the
VLAN configuration is not changed.
•Trunk ports cannot be dynamic access ports, but you can enter the switchport access vlan dynamic
interface configuration command for a trunk port. In this case, the switch retains the setting and
applies it if the port is later configured as an access port.
You must turn off trunking on the port before the dynamic access setting takes effect.
•Dynamic access ports cannot be network ports or monitor ports.
•Secure ports cannot be dynamic access ports. You must disable port security on a port befo re i t
becomes dynamic.
•Dynamic access ports cannot be members of an EtherChannel group.
•Port channels cannot be configured as dynamic access ports.
•The VTP management domain of the VMPS client and the VMPS server must be the same.
•VQP does not support extended-range VLANs (VLAN IDs higher than 1006). Extended-range
VLANs cannot be configured by VMPS.
•The VLAN configured on the VMPS server should not be a voice VLAN.
Table17-6 Default VMPS Client and Dynamic Port Configuration
Feature Default Setting
VMPS domain server None
VMPS reconfirm interval 60 minutes
VMPS server retry count 3
Dynamic ports None configured