Cisco Cisco Access Registrar 4.2 Specifikace stáhnout pdf (Strana 134)

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Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 4 Configuring Controller SettingsWireless Device Access

Configuring Client Roaming

Layer3 MGID Mapping:

-------------------

Number of Layer3 MGIDs........................... 1

Group address Vlan MGID

--------------- ---- ----

239.255.255.250 0 550

• To see all the clients joined to the multicast group in a specific MGID, enter this command:

show network multicast mgid detail mgid_value

where the mgid_value parameter is a number between 550 and 4095.

Information similar to the following appears:

Mgid........................................ 550

Multicast Group Address..................... 239.255.255.250

Vlan........................................ 0

Rx Packet Count............................. 807399588

No of clients............................... 1

Client List.................................

Client MAC Expire Time (mm:ss)

00:13:02:23:82:ad 0:20

Using the CLI to View an Access Point’s Multicast Client Table

To help troubleshoot roaming events, you can view an access point’s multicast client table from the

controller by performing a remote debug of the access point. Follow these steps to do so using the

controller CLI:

Step 1 To initiate a remote debug of the access point, enter this command:

debug ap enable Cisco_AP

Step 2 To see all of the MGIDs on the access point and the number of clients per WLAN, enter this command:

debug ap command “show lwapp mcast mgid all” Cisco_AP

Step 3 To see all of the clients per MGID on the access point and the number of clients per WLAN, enter this

command:

debug ap command “show lwapp mcast mgid id mgid_value” Cisco_AP

Configuring Client Roaming

The Cisco UWN Solution supports seamless client roaming across lightweight access points managed

by the same controller, between controllers in the same mobility group on the same subnet, and across

controllers in the same mobility group on different subnets. Also, in controller software release 4.1 or

later, client roaming with multicast packets is supported.

High-speed roaming of CCXv4-compliant clients at speeds up to 70 mph is supported in outdoor mesh

deployments. An example application might be maintaining communication with a terminal in an

emergency vehicle as it moves within a mesh public network.

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