xStack® DES-3200 Series Layer 2 Ethernet Managed Switch CLI Reference Manual
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config igmp_snooping
fast_leave [enable | disable] Enable or disable the IGMP snooping fast-leave
function. If enabled, the membership is immediately removed when the system
receives the IGMP leave message and the host that sends the leave message is
the last host for the group.
state [enable | disable] Allows users to enable or disable IGMP snooping for the
specified VLAN.
Only Administrator-level users
can issue this command.
Restrictions
Example usage:
To configure IGMP snooping:
DES-3200-28:4#config igmp_snooping vlan_name default state enable
Command: config igmp_snooping vlan_name default state enable
Success.
DES-3200-28:4#
config igmp_snooping querier
Used to co
nfigure 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.
Purpose
config igm
p_snooping querier [vlan_name <vlan_name 32> | vlanid <vidlist> | 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)
Syntax
This
command is used to configure the IGMP snooping querier.
Description
<vlan_
name 32> – The name of the VLAN for which IGMP snooping querier is to
be configured.
Parameters
<vidlist> The VID range for which the IGMP snooping querier is to be
configured.
all Specifies that all VLANs configured on the Switch will be configured.
query_interval <sec 1-25> Specifies the amount of time in seconds between
general query transmissions. the default setting is 125 seconds.
max_response_time The maximum time in seconds to wait for reports from
members. The default setting is 10 seconds.
robustness_variable 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 membership 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
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