Specifications

157
config igmp_snooping querier
Purpose
Used to configure the time in seconds
between general query transmissions, the
maximum time in seconds to wait for
reports from members, the permitted
packet loss that guarantees IGMP
snooping.
Syntax
config igmp_snooping querier
[<vlan_name>/all] {query_interval
<sec>/max_response_time
<sec>/robustness_variable
<value>/last_member_query_interval
<sec>/state [enabled/disabled]
Description
This command configures IGMP snooping
querier.
Parameters
<vlan_name> − The name of the VLAN for
which IGMP snooping querier is to be
configured.
query_interval <sec> − Specifies the amount
of time in seconds between general query
transmissions. The default setting is 125
seconds.
max_response_time <sec> − Specifies the
maximum time in seconds to wait for
reports from members. The default setting
is 10 seconds.
robustness_variable <value> − Provides
fine-tuning to allow for expected packet loss
on a subnet. The value of the robustness
variable is used in calculating the following
IGMP message intervals:
§ Group member interval— Amount of
time that must pass before a
multicast router decides there are no
more members of a group on a
network. This interval is calculated as
follows: (robustness variable x query
interval) + (1 x query response
interval).