Administrator Guide

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Topics:
• MLD timers
• Configuring MLD Version
• Clearing MLD groups
• Debugging MLD
• Explicit Tracking
• Reducing Leave Latency
• Displaying MLD groups table
• Displaying MLD Interfaces
MLD timers
All non-queriers have a timer that is refreshed when it hears a general query. If the timer expires, then the router can assume that the
querier is not present, and so it assumes the role of querier. The other querier present interval, or querier timeout interval, is the amount of
time that passes before a non-querier router assumes that there is no longer a querier on the link.
To adjust the query interval, use the following command:
NOTE: Query interval is the amount of time between general queries sent by the querier.
INTERFACE Mode
ipv6 mld query-interval
Reducing Host Response Burstiness
General Queries contain a Query Response Interval value, which is the amount of time the host has to respond to a general query. Hosts
set a timer to a random number less than the Query Response Interval upon receiving a general query, and send a report when the timer
expires. Increasing this value spreads host responses over a greater period of time, and so reduces response burstiness.
To adjust the query response time, use the following command:
INTERFACE Mode
ipv6 mld query-max-resp-time
Configuring MLD Version
To configure MLD version on the system, follow this procedure:
Select the MLD version
478
Multicast Listener Discovery Protocol