User Manual

D-Link EasySmart Switch User Manual

RxOK: Number of packets received successfully.

TxError: Number of transmitted packets resulting in error.

RxError: Number of received packets resulting in error.

L2 Features > Cable Diagnostics

The Cable Diagnostics is designed primarily for administrators and customer service representatives to

examine of the copper cable quality. It rapidly determines the type of cable errors occurred in the cable.

Select a port and then click the Test Now button to start the diagnosis.

Figure 50– L2 Features > Cable Diagnostics

Test Result: The description of the cable diagnostic results.

•OK means the cable is good for the connection.

•Short in Cable means the wires of the RJ45 cable may be in contact somewhere.

•Open in Cable means the wires of RJ45 cable may be broken or the other end of the cable is simply

disconnected.

•Test Failed means some other errors occurred during cable diagnostics. Please select the same port and

test again.

Cable Fault Distance (meters): Indicates the distance of the cable fault from the Switch port, if the cable is

less than 2 meters, it will show “No Cable”. The deviation of "Cable Fault Distance" is +/-2 meters.

NOTE: Cable length detection is effective at every

speed of 10Mbps, 100Mbps and 1Gbps.

VLAN > 802.1Q VLAN

A VLAN is a group of ports that can be anywhere in the network, but communicate as though they were in

the same area.

VLANs can be easily organized to reflect department groups (such as R&D, Marketing), usage groups (such

as e-mail), or multicast groups (multimedia applications such as video conferencing), and therefore help to

simplify network management by allowing users to move devices to a new VLAN without having to change

any physical connections.

By default, 802.1Q VLAN is disabled. With 802.1Q VLAN enabled, the VLAN VID 1 is created by default with

an empty VLAN name field and all ports are configured as “Untagged” members.

The 802.1Q VLAN configuration is accomplished in three steps:

Enabling 802.1Q VLAN function

Creating a new VID group and assigning ports as Untagged, Tagged or Not Member.

Configuring the PVID of access VLAN

Add VID: Click to create a new VID group, assigning ports from 1 to 24 as Untagged, Tagged, or Not

Member. VLAN VID is a unique number (between 1 and 4094) that identifies a particular VLAN. A port can