multicast forwarding-table source-group-number threshold-alarm
Function
The multicast forwarding-table source-group-number threshold-alarm command configures the upper and lower alarm thresholds for multicast forwarding entries.
The undo multicast forwarding-table source-group-number threshold-alarm command restores the default alarm thresholds for multicast forwarding entries.
By default, the upper and lower alarm thresholds are 80% and 75% respectively.
Format
multicast forwarding-table source-group-number threshold-alarm upper-limit upper-limit-value lower-limit lower-limit-value
undo multicast forwarding-table source-group-number threshold-alarm
Only the S5720-EI, S5720-HI, S5720I-SI, S5720-LI, S5735-L, S5735S-L, S5735S-L-M, S5720S-LI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720-LI, S6720S-EI, S6720S-LI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this command.
Parameters
| Parameter | Description | Value |
|---|---|---|
| upper-limit upper-limit-value | Specifies the upper alarm threshold for multicast forwarding entries, in percentage. | The value is an integer ranging from 1 to 100. |
| lower-limit lower-limit-value | Specifies the lower alarm threshold for multicast forwarding entries, in percentage. | The value is an integer ranging from 1 to 100. lower-limit-value must be smaller than upper-limit-value. |
Usage Guidelines
Usage Scenario
A device supports a limited number of multicast forwarding entries. After the number of multicast forwarding entries reaches the maximum value, no more multicast forwarding entries can be created. As a result, some multicast traffic cannot be forwarded. To facilitate network operations and maintenance, configure the upper and lower alarm thresholds for multicast forwarding entries. Multicast forwarding entry alarms and clear alarms quickly notify you of IGMP/MLD entry usage. The multicast forwarding-table source-group-number threshold-alarm command allows you to flexibly adjust the alarm thresholds for multicast forwarding entries based on service requirements. Note that:
- If the proportion of existing multicast forwarding entries to the maximum number reaches upper-limit-value, a multicast forwarding entry alarm is reported. This alarm is informational only and does not affect creation of new multicast forwarding entries.
- If the proportion of existing multicast forwarding entries to the maximum number falls below lower-limit-value, a multicast forwarding entry clear alarm is reported.
Prerequisites
This command only configures the alarm thresholds for multicast forwarding entries. To enable the configured alarm thresholds to take effect, run the snmp-agent trap enable feature-name mrm trap-name { hwipmcastsgthresholdexceed | hwipmcastsgthresholdexceedclear } command twice to enable the device to report multicast forwarding entry alarms and clear alarms.
Precautions
If the multicast forwarding-table source-group-number threshold-alarm command is executed multiple times, only the latest configuration takes effect.