DES-6500 Chassis-based Layer 3 Ethernet Switch Manual
52
Parameter Description
VLAN ID
This is the
VLAN ID
that, along with the
VLAN Name
, identifies the VLAN for which to
modify the
IGMP Snooping Settings
.
VLAN Name
This is the
VLAN Name
that, along with the
VLAN ID
, identifies the VLAN for which to
modify the
IGMP Snooping Settings
.
Query Interval
The
Query Interval
field is used to set the time (in seconds) between transmitting
IGMP queries. Entries between 1 and 65535 seconds are allowed. Default = 125.
Max Response Time
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.
Robustness Value
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.
Last Member Query
Interval
This field specifies the maximum amount of time between group-specific query
messages, including those sent in response to leave group messages. Default = 1.
Host Timeout
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.
Router Timeout
This is the maximum amount of time in seconds a route is kept in the forwarding table
without receiving a membership report. Default = 260.
Leave Timer
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.
Querier State
Choose
Enabled
to enable transmitting IGMP Query packets or
Disabled
to disable.
The default is
Disabled
.
Querier Router
Behavior
This read-only field describes the behavior of the router for sending query packets.
Querier
will denote that the router is sending out IGMP query packets.
Non-Querier
will denote that the router is not sending out IGMP query packets. This field will only
read
Querier
when the
Querier State
and the
State
fields have been Enabled.
State
Select
Enabled
to implement IGMP Snooping. This field is
Disabled
by default.
Click
Apply
to implement the new settings. Click the
Show All IGMP Snooping Entries
link to return to the
Current
IGMP Snooping Group Entrie
s window.
Static Router Ports
A static router port is a port that has a multicast router attached to it. Generally, this router would have a connection to a
WAN or to the Internet. Establishing a router port will allow multicast packets coming from the router to be propagated
through the network, as well as allowing multicast messages (IGMP) coming from the network to be propagated to the
router.
A router port has the following behavior:
•
All IGMP Report packets will be forwarded to the router port.
•
IGMP queries (from the router port) will be flooded to all ports.
Summary of Contents for TM DES-6500
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