D-Link xStack DGS-3400 Series Reference Manual page 193

x Stack
Robustness Variable (1-255)
Last Member Query Interval
(1- 25)
Version (1-3)
Host Timeout (1-16711450
sec)
Route Timeout (1-16711450
sec)
Leave Timer (1-6375)
Querier State
Querier Router Behavior
State
Fast Leave
Report Suppression
Receive Query Count
Send Query Count
Data Driven Learning State
Data Driven Learning Aged
Out
Data Driven Group Expiry
Time (1-65535)
Click Apply to implement the new settings. Click the
Settings window.
®
DGS-3400 Series Layer 2 Gigabit Ethernet M anaged Sw itch
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 Variable should be increased to accommodate
increased packet loss. This entry field allows an entry of 1 to 255. Default = 2.
This field specifies the maximum amount of time between group-specific query
messages, including those sent in response to leave group messages. Default = 1.
Configure the IGMP version of the query packet which will be sent by the router.
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. The default setting is
2 seconds.
Choose Enabled to enable transmitting IGMP Query packets or Disabled to disable.
The default is Disabled.
This read-only field describes the current querier state of the Switch, whether
Querier, which will send out Multicast Listener Query Messages to links, or Non-
Querier, which will not send out Multicast Listener Query Messages.
Select Enabled to implement IGMP Snooping. This field is Disabled by default.
The Fast Leave option may be Enabled or Disabled (default). This allows an
interface to be pruned without sending group-specific queries.
This parameter allows the user to enable the Report Suppression function. When
IGMP report suppression is Enabled, the Switch sends the first IGMP report from all
hosts for a group to all the multicast routers. The Switch does not send the remaining
IGMP reports for the group to the multicast routers. If the multicast router query
includes requests only for IGMPv1 and IGMPv2 reports, the Switch forwards only the
first IGMPv1 or IGMPv2 report from all hosts for a group to all the multicast routers. If
the multicast router query also includes requests for IGMPv3 reports, the Switch
forwards all IGMPv3 reports for a group to the multicast devices. The default is
Disabled.
The field appears when selecting State as Enabled. This is used to show the number
of IGMP query packets DUT received from specified VLAN when the IGMP snooping
is enabled.
The field appears when selecting State as Enabled. This is used to show the number
of IGMP query packets DUT sent from specified VLAN when the IGMP snooping is
enabled.
Select Enabled or Disabled for data driven learning status.
Use the pull-down menu to enable or disable the aging out of the entry.
Specify the data driven group lifetime in seconds. This parameter is valid only when
Data Driven Learning Aged Out is Enabled.
Show All IGMP Snooping Entries
180
link to return to the IGMP Snooping