PT-7728 User’s Manual

 

Featured Functions

 

Fixed VLAN List (Tagged)

 

 

 

 

 

 

 

 

 

 

Setting

Description

 

Factory Default

 

 

VID range from 1

This field will be active only when selecting the Trunk

 

None

 

 

to 4094

port type. Set the other VLAN ID for tagged devices that

 

 

 

 

connect to the Trunk port. Use commas to separate

 

 

 

 

 

different VIDs.

 

 

 

 

Forbidden VLAN List

 

 

 

 

 

 

 

 

 

Setting

Description

 

Factory Default

 

 

VID range from 1

This field will be active only when selecting the Trunk

 

None

 

 

to 4094

port type. Set the VLAN IDs that will not be supported

 

 

 

 

 

by this trunk port. Use commas to separate different

 

 

 

 

 

VIDs.

 

 

 

VLAN Table

In 802.1Q VLAN table, you can review the VLAN groups that were created, Joined Access Ports, and Trunk Ports, and in Port-based VLAN table, you can review the VLAN group and Joined port.

NOTE

The physical network can have a maximum of 64 VLAN settings.

Using Multicast Filtering

Multicast filtering improves the performance of networks that carry multicast traffic. This section explains multicasts, multicast filtering, and how multicast filtering can be implemented on your PT-7728.

The Concept of Multicast Filtering

What is an IP Multicast?

A multicast is a packet sent by one host to multiple hosts. Only those hosts that belong to a specific multicast group will receive the multicast. If the network is set up correctly, a multicast can only be sent to an end-station or a subset of end-stations on a LAN or VLAN that belong to the multicast group. Multicast group members can be distributed across multiple subnets, so that multicast transmissions can occur within a campus LAN or over a WAN. In addition, networks that support IP multicast send only one copy of the desired information across the network until the delivery path that reaches group members diverges. To make more efficient use of network bandwidth, it is only at these points that multicast packets are duplicated and forwarded. A multicast packet has a multicast group address in the destination address field of the packet’s IP header.

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Moxa Technologies PT-7728 Using Multicast Filtering, Concept of Multicast Filtering, Vlan Table, What is an IP Multicast?