Developers Guide

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Topics:
• MLD timers
• Clearing MLD groups
• Debugging MLD
• Explicit Tracking
• Reducing Leave Latency
• Displaying MLD groups table
• Displaying MLD Interfaces
• MLD Snooping
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.
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Multicast Listener Discovery Protocol