Specifications

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Cisco Wireless LAN Controller Configuration Guide
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Chapter 4 Configuring Controller Settings
Configuring Multicast Mode
• Cisco Flex 7500 Series Controllers do not support multicast-unicast mode.
Using the GUI to Enable Multicast Mode
To enable multicast mode using the controller GUI, follow these steps:
Step 1 Choose Controller > Multicast to open the Multicast page (see Figure 4-23).
Figure 4-23 Multicast Page
Step 2
Choose one of the following options from the Ethernet Multicast Mode drop-down list:
• Disabled—Disables multicasting on the controller. This is the default value.
• Unicast—Configures the controller to use the unicast method to send multicast packets.
• Multicast—Configures the controller to use the multicast method to send multicast packets to a
CAPWAP multicast group.
Note Hybrid REAP supports unicast mode only.
Step 3 If you chose Multicast in Step 2, enter the IP address of the multicast group in the Multicast Group
Address text box.
Step 4 If you want to enable IGMP snooping, select the Enable IGMP Snooping check box. If you want to
disable IGMP snooping, leave the check box unselected. The default value is disabled.
Step 5 To set the IGMP timeout, enter a value between 30 and 7200 seconds in the IGMP Timeout text box. The
controller sends three queries in one timeout value at an interval of timeout/ 3 to see if any clients exist
for a particular multicast group. If the controller does not receive a response through an IGMP report
from the client, the controller times out the client entry from the MGID table. When no clients are left
for a particular multicast group, the controller waits for the IGMP timeout value to expire and then
deletes the MGID entry from the controller. The controller always generates a general IGMP query (that
is, to destination address 224.0.0.1) and sends it on all WLANs with an MGID value of 1.
Step 6 Enter the IGMP Query Interval (seconds).
Step 7 Click Apply to commit your changes.
Step 8 Click Save Configuration to save your changes.