Cisco Systems 3.2 Configuring the Supervisor 720 to Support the WiSM, Enabling Multicast Mode

Chapter 4 Configuring Controller Settings

Configuring the Supervisor 720 to Support the WiSM

•When using Multiple controllers on the network, make sure that the same multicast address is configured on all the controllers.

•Multicast mode does not work across intersubnet mobility events such as guest tunneling, site-specific VLANs, or interface override using RADIUS. However, multicast mode does work in these subnet mobility events when you disable the layer 2 IGMP snooping/CGMP features on the wired LAN.

•The controller drops any multicast packets sent to the UDP port numbers 12222, 12223, and 12224. Make sure the multicast applications on your network do not use those port numbers.

Enabling Multicast Mode

Multicasting is disabled by default. Use the commands in Table 4-2to configure multicast mode on the controller CLI.

Table 4-2 CLI Commands for Configuring Multicast Mode

Command	Multicast Mode
config network multicast global	Enable or disable multicasting
{enable disable}
config network multicast mode unicast	Configure the controller to use the unicast method
	to send multicast packets
config network multicast mode multicast	Configure the controller to use the multicast
multicast-group-ip-address	method to send multicast packets to an LWAPP
	multicast group.

You can also enable multicast mode on the Configure > Switch IP System General page on the WCS interface.

Configuring the Supervisor 720 to Support the WiSM

When you install a WiSM in a Cisco Catalyst 6500 switch, you must configure the Supervisor 720 to support the WiSM. When the supervisor detects the WiSM, the supervisor creates 10 GigabitEthernet interfaces, ranging from Gigslot/1 to Gigslot/8. For example, if the WiSM is in slot 9, the supervisor creates interfaces Gig9/1 through Gig9/8. The first eight GigabitEthernet interfaces must be organized into two etherchannel bundles of four interfaces each. The remaining two GigabitEthernet interfaces are used as service-port interfaces, one for each controller on the WiSM. You must manually create VLANs to communicate with the ports on the WiSM.

Note The WiSM is also supported on Cisco 7600 Series Routers running only Cisco IOS Release 12.2(18)SXF5.

Cisco Wireless LAN Controller Configuration Guide

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