120 ZT8101 Users Guide
Using the Web Console
packets to a static router port on the ZT8101 switch guarantees that all ports of a multi-port router,
which are attached to the switch, can reach all multicast group members through the attached
router’s other ports.
A router port interacts with multicast packets in these ways:
• 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 multi-port router connected to the router port
of the Layer 3 switch would not be able to receive UDP data streams from its ports 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 configure a static router port
1. In the left panel, click Layer 3 IP Networking.
2. In the top panel, click Static Router Port Settings.
3. Click New and configure these fields.
4. Click Apply.
5. To delete an entry from the table, select the entry and click Delete.
Field Description
VLAN Name
Specifies the name of the VLAN that you want to configure a static router
port for.
Port Members
Specifies the ports that you want to set up as static router ports. To select a
port, click the port.
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