D-Link DGS-3324SRi Intelligent Stackable Gigabit Ethernet Switch
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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.
Route 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
Querier
to enable transmitting IGMP Query packets or
Non-
Querier
to disable. The default value is
Non-Querier
.
State
Select
Enabled
to implement IGMP Snooping. This is
Disabled
by
default.
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.
•
All UDP multicast packets will be forwarded to the router port. Because routers do not send IGMP
reports or implement IGMP snooping, a multicast router connected to the router port of the Layer 3
switch would not be able to receive UDP data streams unless the UDP multicast packets were all
forwarded to the router port.
A router port will be dynamically configured when IGMP query packets, RIPv2 multicast, DVMRP multicast,
PIM-DM multicast packets are detected flowing into a port.
Open the
IGMP
folder and click on the
Static Router Ports Entry
link to open the
Current Static Router
Ports Entries
page, as shown below.
Figure 4- 10. Current Static Router Ports Entries window
The
Current Static Router Ports Entries
page (shown above) displays all of the current entries to the Switch’s
static router port table. To add or modify an entry, click the
Modify
button. This will open the
Static Router
Ports Settings
page, as shown below.
