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config igmp_snooping querier
•
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.
•
By default, the robustness variable is set to 2. You might
want to increase this value if you expect a subnet to be
lossy. Although 1 is specified as a valid entry, the
roubustness variable should not be one or problems may
arise.
last_member_query_interval <sec> − 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.
state [enable | disable] − Allows the switch to be specified as an
IGMP Querier or Non-querier.
Restrictions Only administrator-level users can issue this command.
Example usage:
To configure the igmp snooping:
DES-3550:4#config igmp_snooping querier default query_interval
125 state enable
Command: config igmp_snooping querier default query_interval
125 state enable
Success.
DES-3550:4#
config router_ports
Purpose Used to configure ports as router ports.
Syntax
config router_ports <vlan_name 32> [add | delete] <portlist>
Description This command allows you to designate a range of ports as being
connected to multicast-enabled routers. This will ensure that all
packets with such a router as its destination will reach the multicast-
enabled router − regardless of protocol, etc.
Parameters
<vlan_name 32>
−
The name of the VLAN on which the router port
resides.