Cisco Systems 4500 Default VMPS Client Configuration, Configuring a Switch as a VMPS Client

13-24
Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 13 Configuring VLANs, VTP, and VMPS
VLAN Membership Policy Server
Multiple hosts (MAC addresses) can be active on a dynamic port if all are in the same VLAN. If the link
goes down on a dynamic port, the port returns to the unassigned state and does not belong to a VLAN.
Any hosts that come online through the port are checked again with the VMPS before the port is assigned
to a VLAN.
For this operation to work, the client device must be able to reach the VMPS. A VMPS client sends VQP
requests as UDP packets, trying a certain number of times before giving up. For details on how to set the
retry interval, refer to section “Configuring the Retry Interval” on page 27.
The VMPS client also periodically reconfirms the VLAN membership. For details on how to set the
reconfirm frequency, refer to section “Administering and Monitoring the VMPS” on page 28.
A maximum of 50 hosts are supported on a given port at any given time. Once this maximum is exceeded,
the port is shut down, irrespective of the operating mode of the VMPS server.
Note The VMPS shuts down a dynamic port if more than 50 hosts are active on that port.
Default VMPS Client Configuration
Table 13-4 shows the default VMPS and dynamic port configuration on client switches.
Configuring a Switch as a VMPS Client
This section contains the following topics:
• Configuring the IP Address of the VMPS Server, page 13-24
• Configuring Dynamic Access Ports on a VMPS Client, page 13-25
• Reconfirming VLAN Memberships, page 13-26
• Configuring Reconfirmation Interval, page 13-26
• Reconfirming VLAN Memberships, page 13-26
Configuring the IP Address of the VMPS Server
To configure a Catalyst 4500 series switch as a VMPS client, you must enter the IP address or hostname
of the switch acting as the VMPS.
Table 13-4 Default VMPS Client and Dynamic Port Configuration
Feature Default Configuration
VMPS domain server None
VMPS reconfirm interval 60 minutes
VMPS server retry count 3
Dynamic ports None configured