Filter
Top Products
80 ZT8101 User’s Guide
Using the Telnet Console
The purpose of a router port is to enable UDP multicast packets and IGMP multicast group
membership messages to reach multiple ports of a multi-port router. Routers do not implement
IGMP snooping or transmit/forward IGMP report packets. Thus, forwarding all IP UDP multicast
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. From the Main Menu, select Layer 3 - IP Networking Setup | Static Router Port Settings
and press Enter.
2. Toggle the Action field to Add/Modify and configure these fields.
3. Highlight APPLY and press Enter.
4. To delete an entry, toggle the Action field to Delete and enter the VLAN name of the VLAN
for which the router port table entry is to be deleted. Highlight APPLY and press Enter.
Field Description
VLAN Name Specifies the name of the VLAN the static router port resides on.
Router Port
Specifies the ports that you want to set up as static router ports. Each port
can be set individually as a router port by highlighting the port’s entry using
the Arrow keys. Use the spacebar to toggle between M (member) and -
(non-member).