DGS-1510/ME Series Metro Ethernet Switch CLI Reference Guide
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setting is 125 seconds.
<sec 1-65535>
- Enter the query interval value here. This value must be between 1 and 65535 seconds.
max_reponse_time
- Specifies the maximum time in seconds to wait for reports from 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 seconds.
robustness_variable
- Specifies to provide 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:
<value 1-7>
- Enter the robustness variable value here. This value must be between 1 and 7. By default, the
robustness variable is set to 2. You might want to increase this value if you expect a subnet to be more
loose.
•
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).
•
Other querier present interval—Amount of time that must pass before a multicast router decides 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 are
no local members of a group. The default number is the value of the robustness variable.
last_member_query_interval
- Specifies the maximum amount of time between group-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 interface if there are no reports received after the
response time (which is last member query interval * robustness variable)
<sec 1-25>
- Enter the last member query interval value here. This value must be between 1 and 25 seconds.
state
- If the state is enabled, it allows the Switch to be selected as an IGMP querier (sends IGMP query
packets). It the state is disabled, then the Switch cannot play the role as a querier. Note that if the Layer 3
router connected to the Switch provide only the IGMP proxy function but does not provide the multicast routing
function, then this state must be configured as disabled. Otherwise, if the Layer 3 router is not selected as the
querier, it will not send the IGMP query packet. Since it will not send the multicast-routing protocol packet, the
port will be timed out as a router port.
enable
- Specifies to enable this state.
disable
- Specifies to disable this state.
version
- Specifies the version of IGMP packet that will be sent by this device. If an IGMP packet received by the
interface has a version higher than the specified version, this packet will be dropped.
<value 1-3>
- Enter the version number here. This value must be between 1 and 3.
Restrictions
Only Administrators, Operators and Power-Users can issue this command.
Example
To configure the IGMP snooping querier:
DGS-1510-28XMP/ME:admin# config igmp_snooping querier vlan_name default query_interval 125
state enable
Command: config igmp_snooping querier vlan_name default query_interval 125 state enable
Success.
DGS-1510-28XMP/ME:admin#
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