Cisco Cisco Access Registrar 4.2 Especificações descarregar pdf (Página 90)

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Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 3 Configuring Ports and Interfaces

Enabling Link Aggregation

• When you enable LAG on the Cisco WiSM, you must enable port-channeling/Ether-channeling for

all of the controller’s ports on the switch.

• When you enable LAG, port mirroring is not supported.

• When you enable LAG, if any single link goes down, traffic migrates to the other links.

• When you enable LAG, only one functional physical port is needed for the controller to pass client

traffic.

• When you enable LAG, access points remain connected to the switch, and data service for users

continues uninterrupted.

• When you enable LAG, you eliminate the need to configure primary and secondary ports for each

interface.

• When you enable LAG, the controller sends packets out on the same port on which it received them.

If an LWAPP packet from an access point enters the controller on physical port 1, the controller

removes the LWAPP wrapper, processes the packet, and forwards it to the network on physical port

1. This may not be the case if you disable LAG.

• When you disable LAG, the management, static AP-manager, and dynamic interfaces are moved to

port 1.

• When you disable LAG, you must configure primary and secondary ports for all interfaces.

• When you disable LAG, you must assign an AP-manager interface to each port on the controller.

Otherwise, access points are unable to join.

• Cisco 4400 series controllers support a single static link aggregation bundle.

• LAG is typically configured using the Startup Wizard, but you can enable or disable it at any time

through either the GUI or CLI.

Note LAG is enabled by default and is the only option on the WiSM controller and the controller

in the Catalyst 3750G Integrated Wireless LAN Controller Switch.

Using the GUI to Enable Link Aggregation

Follow these steps to enable LAG on your controller using the GUI.

Step 1 Click Controller > General to open the General page (see Figure 3-14).

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