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The user-changeable parameters for IGMP Snooping are listed here along with their CLI command
strings.
Query Interval
config igmp_snooping querier
<vlan_name>/all
query_interval <sec>
Max Response Time
config igmp_snooping querier
<vlan_name>/all
max_response_time <sec>
Robustness Variable
config igmp_snooping
<vlan_name>/all
robustness_variable <value>
Last Member Query Interval
config igmp_snooping
<vlan_name>/all
last_member_query_interval
<sec>
Host Timeout
config igmp_snooping
<vlan_name>/all host_timeout
<sec>
Route Timeout
config igmp_snooping
<vlan_name>/all
router_timeout <sec>
Leave Timer
config igmp_snooping
<vlan_name>/all leave_timer
<sec>
Querier State
config igmp_snooping querier
<vlan_name>/all state
[enabled/disabled]
State
config igmp_snooping
<vlan_name>/all state
[enabled/disabled]
Using the Web-based Management Software
DES-7000/DES-7100 Layer 2 Switch User's Guide
The Query Interval field is used to set the time (in
seconds) between transmitting IGMP queries. Entries
between 1 and 9,999 seconds are allowed. Default =
125.
This determines the maximum amount of time in seconds
allowed before sending an IGMP response report. The
Max Response Time field allows an entry between 1 and
25 (seconds). Default = 10.
Adjust this variable according to expected packet loss. If
packet loss on the VLAN is expected to be high, the
Robustness
accommodate increased packet loss. This entry field
allows an entry of 2 to 255. Default = 2.
Specifies the maximum amount of time between group-
specific query messages, including those sent in
response to leave group messages. Default = 1.
This is the maximum amount of time in seconds allowed
for a host to continue membership in a multicast group
without the Switch receiving a host membership report.
Default = 260.
This is the maximum amount of time in seconds a route is
kept in the forwarding table without receiving a
membership report. Default = 260.
This specifies the maximum amount of time in seconds
between the Switch receiving a leave group message
from a host, and the Switch issuing a group membership
query. If no response to the membership query is
received before the Leave Timer expires, the (multicast)
forwarding entry for that host is deleted.
Choose Querier to enable transmitting IGMP Query
packets or Non-Querier to disable. The default value is
Non-Querier.
Select Enabled to implement IGMP Snooping. This is
Disabled by default.
Variable
should
be
increased
to
61
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