Chapter 7 Trouble Shooting; How To Resolve Link Led Off; Q & A - Raisecom ISCOM 1024E User Manual

7.1 How to resolve link LED off

The possible reasons are following:
the power supply is off
the type of cable is not right one
physical interface of switch has some problem
environment, such as building
7.2 Q & A
1. Computer A can access computer B through Ethernet switch. However, computer A can not access computer C.
Computer A and computer C are maybe not in the same VLAN. Please check the VLAN configuration through
console port.
The network has some problem including Computer C. please check LED LNK/ACT of computer C and try to
connect other device using this interface.
Please check the NIC configuration of computer C.
2. there is no menu in console
The values of the connecting parameters of the terminal simulation program on the PC are as follows:
Confirm whether the console cable has been connected to ISCOM1024E
Confirm whether the console cable is CBL-RS232-DB9F/RJ45-A-2m
Confirm whether console port on PC has been enabled
3. Why Up-Arrow and Down-Arrow key do not take effect?
ISCOM1024E can not identify these two keys because console didn't send it right
Chapter 7
Baud Rate: 9600
Data Bit: 8
Stop Bit: 1
Parity Bit: None
Flow Control: None
Trouble shooting