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5/26/05 Virtual Interface
OL-7426-03
Each Operator-Defined Interface must be configured for the following:
• VLAN number.
• Fixed IP Address, IP netmask, and default gateway.
• Physical port assignment.
• Primary and Secondary DHCP Servers.
• Access Control List, if required.
Refer to the Configuring the Cisco Wireless LAN Controller
section for configuration instructions.
About the Virtual InterfaceVirtual Interface
The Virtual Interface controls Layer 3 Security and Mobility manager communications for Cisco Wireless
LAN Controllers. It maintains the DNS Gateway hostname used by Layer 3 Security and Mobility
managers to verify the source of certificates when Layer 3 Web Auth is enabled.
The Virtual Interface must be configured for the following:
• Any fictitious, unassigned, unused Gateway IP Address.
• DNS Gateway Host Name.
Refer to the Configuring the Cisco Wireless LAN Controller
section for configuration instructions.
About the Service PortService Port
The physical Service port on the Cisco Wireless LAN Controller is a 10/100BASE-T Ethernet port
dedicated to Operating System device service, and was formerly known as the Management port. The
Service Port is controlled by the Service-Port Interface.
The Service Port is configured with an IP Address, subnet mask, and IP assignment protocol different
from the Management Interface. This allows the operator to manage the Cisco Wireless LAN Controller
directly or through a dedicated Operating System service network, such as 10.1.2.x, which can ensure
Operating System device service access during network downtime.
Cisco WLAN Solution created the Service port to remove the Cisco Wireless LAN Controller device
service from the network data stream to improve security and to provide a more secure service
connection.
Note that you cannot assign a Gateway to the Service port, so the port is not routable. However, you
can set up dedicated routes to network management devices.
Also note that the Service Port is not auto-sensing: you must use the correct straight-through or
crossover Ethernet cable to communicate with the Service Port.
Refer to the Configuring Other Ports and Parameters
for information on how to configure the Service
Port.