Config Igmp_Snooping Querier; To Configure The Igmp Snooping Querier - D-Link xStack DGS-3400 Cli Manual

xStack

config igmp_snooping querier

Purpose
Syntax
Description
Parameters
Restrictions
Example usage:

To configure the IGMP snooping querier:

D G S -3 4 26 :5 # c on f ig i g m p_ s no op i n g q ue ri e r v l an d e f au l t qu e r y_ i nt er v a l 1 23 v e r si o n
3
C o m ma n d: c o n fi g i gm p _ sn o op in g qu e ri er v la n d ef a u lt qu er y _ in t er va l 12 3 v er s i on 3
S u c ce s s.
D G S -3 4 26 :5 #
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DGS-3400 Series Layer 2 Gigabit Managed Switch CLI Manual
Used to configure the IGMP snooping querier.
config igmp_snooping querier [ vlan <vlan_name 32> |all] { query_interval <sec 1-
65535> | max_response_time <sec 1-25> | robustness_variable <value 1-255> |
last_member_query_interval <sec 1-25> | state [enable|disable] |version <value 1-
3>} (1)
This command is 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.
vlan <vlan_name 32> − The name of the VLAN for which IGMP snooping querier is to be
configured.
query_interval <sec 1–65535> − Specifies the amount of time in seconds between
general query transmissions. The default setting is 125 seconds.
max_response_time <sec 1–25> − Specifies the maximum time in seconds to wait for
reports from members. The default setting is 10 seconds.
robustness_variable <value 1–255> − 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).
•
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 1–25> − The maximum amount of time between
group–specific query messages, including those sent in response to leave–group
messages. Users may 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.
version <value 1-3> − Configure the IGMP version of the query packet which will be sent
by the router.
Only Administrator and Operator-level users can issue this command.
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