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.
To setup a static router port:
Click the Static Router Port Settings link on the Multicasting menu:
To delete an existing static router port configuration, click the Delete icon.
To add a static router port configuration, click the New icon:
The following fields can be set:
Figure 7-40. Static Router Port Settings window
Figure 7-41. Static Router Port Settings − Add window
Parameter
VID
Port
DES-3326 Layer 3 Fast Ethernet Switch User's Guide
Description
Allows the specification of the VLAN
ID (VID) of the VLAN the static router
port belongs to.
Each port can be set individually as
a router port by clicking the port's
click-box entry.
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