Cisco Cisco Access Registrar 4.2 Specifikace stáhnout pdf (Strana 63)

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Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 3 Configuring Ports and Interfaces

Overview of Ports and Interfaces

Note Refer to the “Configuring a 4400 Series Controller to Support More Than 48 Access Points” section on

page 3-35 if you want to configure your Cisco 4400 series controller to support more than 48 access

points.

Each distribution system port is, by default, an 802.1Q VLAN trunk port. The VLAN trunking

characteristics of the port are not configurable.

Note Some controllers support link aggregation (LAG), which bundles all of the controller’s distribution

system ports into a single 802.3ad port channel. Cisco 4400 series controllers support LAG in software

release 3.2 and higher, and LAG is enabled automatically on the Cisco WiSM controllers. Refer to the

“Enabling Link Aggregation” section on page 3-29 for more information.

Service Port

Cisco 4400 series controllers also have a 10/100 copper Ethernet service port. The service port is

controlled by the service-port interface and is reserved for out-of-band management of the controller and

system recovery and maintenance in the event of a network failure. It is also the only port that is active

when the controller is in boot mode. The service port is not capable of carrying 802.1Q tags, so it must

be connected to an access port on the neighbor switch. Use of the service port is optional.

Note The Cisco WiSM’s 4404 controllers use the service port for internal protocol communication between

the controllers and the Supervisor 720.

Note The Cisco 2000 and 2100 series controllers and the controller in the Cisco Integrated Services Router

do not have a service port.

Note The service port is not auto-sensing. You must use the correct straight-through or crossover Ethernet

cable to communicate with the service port.

Interfaces

An interface is a logical entity on the controller. An interface has multiple parameters associated with it,

including an IP address, default-gateway (for the IP subnet), primary physical port, secondary physical

port, VLAN identifier, and DHCP server.

These five types of interfaces are available on the controller. Four of these are static and are configured

at setup time:

• Management interface (Static and configured at setup time; mandatory)

• AP-manager interface (When using Layer 3 LWAPP, static and configured at setup time; mandatory)

• Virtual interface (Static and configured at setup time; mandatory)

• Service-port interface (Static and configured at setup time; optional)

• Dynamic interface (User-defined)

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