Config Igmp_Snooping Querier - Extreme Networks EAS 200-24p Switch CLI Manual

config igmp_snooping querier

Description
Used to configure the time in seconds between general query transmissions, the maximum time in
seconds to wait for reports from members, and the permitted packet loss that guarantees IGMP
snooping.
Format
config igmp_snooping querier [vlan_name <vlan_name 32> | vlanid <vlanid_list>
| all] {query_interval <sec 1-65535> | max_response_time <sec 1-25> |
robustness_variable <value 1-7> | last_member_query_interval <sec 1-25> |
state [enable | disable] | version <value 1-3>}(1)
Parameters
vlan_name - Specify the name of the VLAN for which IGMP snooping querier is to be configured.
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<vlan_name 32> - Enter the VLAN name here. The VLAN name can be up to 32 characters long.
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vlanid - Specify the VLAN ID for which IGMP snooping querier is to be configured.
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<vlanid_list> - Enter the VLAN ID list here.
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all - Specify all VLANs for which IGMP snooping querier is to be configured.
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query_interval - (Optional) Specify the amount of time in seconds between general query
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transmissions. The default setting is 125 seconds.
<sec 1-65535> - Enter the query interval value here. This value must between 1 and 65535
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seconds.
max_reponse_time - (Optional) Specify the maximum time in seconds to wait for reports from
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members. The default setting is 10 seconds.
<sec 1-25> - Enter the maximum response time value here. This value must be between 1 and 25
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seconds.
robustness_variable - (Optional) Provides fine-tuning to allow for expected packet loss on a subnet.
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The value of the robustness variable is used in calculating the following IGMP message intervals:
<value 1-7> - Enter the robustness variable value here. This value must be between 1 and 7. By
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default, the robustness variable is set to 2. You might want to increase this value if you expect a
subnet to be loosely.
Group member interval—Amount of time that must pass before a multicast router decides there are
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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).
Other querier present interval—Amount of time that must pass before a multicast router decides
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that there is no longer another multicast router that is the querier. This interval is calculated as
follows: (robustness variable x query interval) + (0.5 x query response interval).
Last member query count—Number of group-specific queries sent before the router assumes there
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are no local members of a group. The default number is the value of the robustness variable.
last_member_query_interval - (Optional) Specify the maximum amount of time between group-
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specific query messages, including those sent in response to leave-group messages. You might lower
this interval to reduce the amount of time it takes a router to detect the loss of the last member of a
group. On receiving a leave message, the router will assume there are no local members on the
Extreme Networks EAS 200-24p Switch CLI Manual
config igmp_snooping querier
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