Name: Cisco 4400 Series
Brand: Cisco
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12-10

Cisco Wireless LAN Controller Configuration Guide

OL-17037-01

Chapter 12 Configuring Mobility GroupsWireless Device Access

Configuring Mobility Groups

Note For the Cisco WiSM, both controllers should be configured with the same mobility group

name for seamless routing among 300 access points.

• Controllers within the same mobility group that run different software releases (such as 4.2, 5.0, 5.1,

and 5.2) can use guest tunneling, but they do not support normal client mobility.

Note If you inadvertently configure a controller that is running software release 5.2 with a failover

controller that is running a different software release (such as 4.2, 5.0, or 5.1), the access

point might take a long time to join the failover controller because the access point starts the

discovery process in CAPWAP and then changes to LWAPP discovery.

• All controllers must be configured with the same virtual interface IP address.

Note If necessary, you can change the virtual interface IP address by editing the virtual interface

name on the Controller > Interfaces page. See Chapter 3 for more information on the

controller’s virtual interface.

Note If all the controllers within a mobility group are not using the same virtual interface,

inter-controller roaming may appear to work, but the hand-off does not complete, and the

client loses connectivity for a period of time.

• You must have gathered the MAC address and IP address of every controller that is to be included

in the mobility group. This information is necessary because you will be configuring all controllers

with the MAC address and IP address of all the other mobility group members.

Note You can find the MAC and IP addresses of the other controllers to be included in the mobility

group on the Controller > Mobility Groups page of each controller’s GUI.

• When you configure mobility groups using a third-party firewall, Cisco PIX, or Cisco ASA, you

need to open ports 16666, 12222, and 12223; IP protocols 50 and 97; and UDP port 500.

Note You cannot perform port address translation (PAT) on the firewall. You must configure

one-to-one network address translation (NAT).

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