ZyXEL Communications XGS2210-28 User Manual page 462

Table 210 Management > Diagnostic (continued)
LABEL DESCRIPTION
TTL Enter the Time To Live (TTL) value for the ICMP Echo Request packets. This is to set the
maximum number of the hops (routers) a packet can travel through. Each router along the
path will decrement the TTL value by one and forward the packets. When the TTL value
becomes zero and the destination is not found, the router drops the packets and informs the
sender.
Wait Time Specify how many seconds the Switch waits for a response to a probe before running
another traceroute.
Queries Specify how many times the Switch performs the traceroute function.
Ethernet Port Test Click the drop-down list to choose the slot number of the Switch in a stack. Enter a port
number and click Port Test to perform an internal loopback test.
Cable Diagnostics Click the drop-down list to choose the slot number of the Switch in a stack. Enter an Ethernet
port number and click Diagnose to perform a physical wire-pair test of the Ethernet
connections on the specified port(s). The following fields display in the Diagnostic field when
you diagnose a port.
This field is available only on the Switch that has one or more copper Ethernet ports (except
the MGMT port).
Port This is the number of the physical Ethernet port on the Switch.
Channel An Ethernet cable usually has four pairs of wires. A 10BASE-T or 100BASE-TX port only use and
test two pairs, while a 1000BASE-T port requires all four pairs.
This displays the descriptive name of the wire-pair in the cable.
Pair status Ok: The physical connection between the wire-pair is okay.
Open: There is no physical connection (an open circuit detected) between the wire-pair.
Short: There is an short circuit detected between the wire-pair.
Unknown: The Switch failed to run cable diagnostics on the cable connected this port.
Unsupported: The port is a fiber port or it is not active.
Cable length This displays the total length of the Ethernet cable that is connected to the port when the
Pair status is Ok and the Switch chipset supports this feature.
This shows N/A if the Pair status is Open or Short. Check the Distance to fault.
This shows Unsupported if the Switch chipset does not support to show the cable length.
Distance to This displays the distance between the port and the location where the cable is open or
fault
shorted.
This shows N/A if the Pair status is Ok.
This shows Unsupported if the Switch chipset does not support to show the distance.
Locator LED Enter a time interval (in minutes) and click Blink to show the actual location of the Switch
between several devices in a rack.
The default time interval is 30 minutes.
Click Stop to have the Switch terminate the blinking locater LED.
Chapter 46 Diagnostic
XGS2210 Series User's Guide
462