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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, and PIM-DM multicast packets are detected flowing into a port.
Open the IGMP folder and the click on the Static Router Ports Entry link to open the Current Static
Router Ports Entries window, as shown below.
Current Static Router Port Entries window
The window 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 window, as shown
below.
Static Router Ports Settings window
