Configure SSM Range and Global Parameters
Configure the SSM range parameter to extend the default SSM range of 232/8 to include an IP multicast address. You can configure existing applications without changing their group configurations.
Before you begin
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To change the RangeGroup configuration, you must first disable PIM.
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To change the RangeGroup configuration, you must delete all entries in the SSM channel table before you configure the new IP multicast group address.
About this task
The other global parameters enable the IGMPv3 dynamic learning feature and configure the administrative state for all the entries in the SSM channel table.
Important
If you change the RangeGroup configuration, the switch reinitializes PIM and temporarily stops all PIM traffic. For those multicast groups out of SSM range (for example, under PIM-SM behavior), this procedure also causes a rendezvous point (RP) relearn delay of up to 60 seconds. This delay can be longer if the bootstrap router (BSR) is local.
You can configure IGMP on a VRF instance the same way you configure the Global Router except that you must first launch the appropriate VRF context.
Procedure
- In the navigation pane, expand .
- Select IGMP.
- Select the Ssm Global tab.
- Configure the appropriate fields.
- Select Apply.
Ssm Global Field Descriptions
Use the data in the following table to use the Ssm Global tab.
|
Name |
Description |
|---|---|
|
DynamicLearning |
Activates the dynamic learning of SSM channel (S,G) pairs from IGMPv3 reports. As new SSM channels are learned, the system displays them in the SSM channel table. |
|
RangeGroup |
Configures the IP multicast group address. The lowest group address is 224.0.0.0 and the highest is 239.255.255.255. The default is 232.0.0.0. |
|
RangeMask |
Configures the address mask of the multicast group. The default is 255.0.0.0. |
|
SsmMapAdminAction |
Configures the administrative state, which determines whether the switch uses the table entries:
|