Configuring the Switch
Configuring the Switch
IP Multicast (IGMP) Service
Number of IP Multicast Addresses Allowed
The total number of IGMP filters (addresses) allowed in the switch is 255.
Changing the Querier Configuration Setting
The Querier feature, by default, is enabled and in most cases should be left in this setting. If you need to change the querier setting, you can do so using the IGMP Configuration MIB.
N o t e | The following commands are all case sensitive. |
To disable the querier setting, select Command Prompt from the Diagnostics
Menu and enter this command:
setmib hpSwitchIgmpQuerierState.1To enable the querier setting, enter this command:
setmib hpSwitchIgmpQuerierState.1
To view the current querier setting, select the Advanced Command prompt from the Main Menu and enter this command:
getmib hpSwitchIgmpQuerierState.1N o t e | Whenever IGMP is enabled, the switch generates an Event Log message |
| indicating whether querier functionality is enabled. |
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Special Case IGMP Configuration
Normally, all members of a multicast group, both senders and receivers, join the multicast group through IGMP “join” requests. Certain applications, though, for example Microsoft® NetShow®, do not require the server to join the multicast group before they start sending the multicast data stream.
Because these applications operate in this way, the Switch 212M and 224M will not be able to recognize the server as part of the multicast group, and will disable the multicast communication between the server and the client members of the multicast group.
If you are using one of these applications, you must first configure the switch port to which the server is connected to Forward mode.