Canton 3C16476CS Manual De Usuario

C

HAPTER

 5: T

ROUBLESHOOTING

If you forget the static IP address that you assigned to 
the Switch and you need to access the Web interface, 
use the Discovery application to automatically detect 
the IP address and connect to the interface.

For information on using the Discovery application, 
refer to 

 on 

.

This section lists some issues that are related to the 
LEDs on the front panel of the Switch. For 
information on basic LED checks, refer to the 
following topics in 

:

■

■

■

There is a problem with this connection. Verify that:

■

The device being connected to is powered on and 
operating correctly.

■

The cable is connected at both ends.

■

The cable is not damaged.

■

If the connection is to a workstation, that the 
workstation's network interface is installed and 
configured correctly.

■

The correct category of cable is being used for the 
required link speed. Category 3 cables can be used 
for 10BASE-T operation only. Category 5 cable is 
required for 100BASE-TX or 1000BASE-T. 3Com 
recommends Category 5e or 6 cables for 
1000BASE-T operation.

Verify that:

■

The fiber cable is in good condition.

■

The SFP module is correctly inserted.

■

A 3Com SFP module is being used. Refer to 

 for 

details.

■

The equipment at the far end is installed and cor-
rectly configured.

The Switch supports full-duplex autonegotiation. If 
the connected device does not support 
autonegotiation, ensure that it is configured for 
half-duplex operation only. If the connected device 
has autonegotiation disabled or overridden, and is 
configured as full-duplex, the Switch will configure 
the link as half-duplex, causing a mismatch that will 
reduce network performance when data is 
transmitting and receiving simultaneously on the 
same link.