Related Documentation
- EX, J, M, MX, PTX, T Series
- show mld interface in the Junos OS Operational Mode Commands
- show mld statistics in the Junos OS Operational Mode Commands
- J, M, MX, SRX, T Series
- Understanding MLD
- J, M, MX, PTX, SRX, T Series
- Modifying the MLD Host-Query Message Interval
- Example: Modifying the MLD Robustness Variable
Modifying the MLD Query Response Interval
The query response interval is the maximum amount of time that can elapse between when the querier router sends a host-query message and when it receives a response from a host. You can change this interval to adjust the burst peaks of MLD messages on the subnet. Set a larger interval to make the traffic less bursty.
The query response timeout, the query interval, and the robustness variable are related in that they are all variables that are used to calculate the multicast listener interval. The multicast listener interval is the number of seconds that must pass before a multicast router determines that no more members of a host group exist on a subnet. The multicast listener interval is calculated as the (robustness variable x query-interval) + (1 x query-response-interval). If no reports are received for a particular group before the multicast listener interval has expired, the routing device stops forwarding remotely-originated multicast packets for that group onto the attached network.
The default query response interval is 10 seconds. You can configure a subsecond interval up to one digit to the right of the decimal point. The configurable range is 0.1 through 0.9, then in 1-second intervals 1 through 999,999.
To modify the query response interval:
- Configure the interval.[edit protocols mld]user@host# set query-response-interval 0.5
- Verify the configuration by checking the MLD Query Response Interval field in the output of the show mld interface command.
- Verify the operation of the query interval by checking the Listener Query field in the output of the show mld statistics command.
Related Documentation
- EX, J, M, MX, PTX, T Series
- show mld interface in the Junos OS Operational Mode Commands
- show mld statistics in the Junos OS Operational Mode Commands
- J, M, MX, SRX, T Series
- Understanding MLD
- J, M, MX, PTX, SRX, T Series
- Modifying the MLD Host-Query Message Interval
- Example: Modifying the MLD Robustness Variable
Published: 2012-11-16
Related Documentation
- EX, J, M, MX, PTX, T Series
- show mld interface in the Junos OS Operational Mode Commands
- show mld statistics in the Junos OS Operational Mode Commands
- J, M, MX, SRX, T Series
- Understanding MLD
- J, M, MX, PTX, SRX, T Series
- Modifying the MLD Host-Query Message Interval
- Example: Modifying the MLD Robustness Variable
