Dasan V8102, Руководство пользователя

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User Manual
UMN:CLI
V8102
483
IGMP Startup Query Interval
The V8102 needs to acquire information of its multicast members for the updated mem-
bership when it becomes the querier on the specified IGMP interface. For the updated
membership, V8102 sends general query messages as a querier. You can specify the in-
terval to send this query messages as many as the configured QRV value.
To specify the interval to send general query messages, use the following command.
Command Mode Description
ip igmp startup-query-interval
<1-18000>
Interface
[VLAN]
Specifies a startup query interval.
1-18000: startup query interval (Default: 31 seconds)
no ip igmp startup-query-
interval
Deletes a specified startup query interval.
IGMP Query Response Time
In IGMP version 2 and 3, membership query messages include the maximum query re-
sponse time field. This field specifies the maximum time allowed before sending a re-
sponding report. The maximum query response time allows a router to quickly detect that
there are no more directly connected group members on a network segment.
To specify a maximum query response time advertised in membership query messages,
use the following command.
Command Mode Description
ip igmp query-max-response-
time <1-240> Interface
[VLAN]
Specifies a maximum query response time.
1-240: maximum response time (default: 10 seconds)
no ip igmp query-max-response-
time
Deletes a specified maximum query response time.
IGMP Querier Timeout
There should be a single querier on a network segment to prevent duplicating multicast
traffic for connected hosts. When there are several routers, if the router has the lowest IP
address or if the router hears no queries during the timeout period, it becomes the querier.
To specify a timeout period before a router takes over as a querier for the interface after
the previous querier has stopped querying, use the following command.
Command Mode Description
ip igmp querier-timeout
<60-300>
Interface
[VLAN]
Specifies an IGMP queier timeout period.
60-300: timeout period (default: 255 seconds)
no ip igmp querier-timeout Deletes a specified IGMP queier timeout period.
IGMP Last Member Query Count and Interval
When a host is not interested in receiving the multicast traffic for a particular group any
more, it can explicitly leave the group by sending leave group messages.
Upon receiving a leave message, a querier then sends out a group-specific (IGMPv2) or