Network Problems - Lenovo ThinkEdge SE450 Maintenance Manual

System error LED is on and event log "Power supply has lost input" is displayed
To resolve the problem, ensure that:
1. The power adapter is properly connected to a power cord.
2. The power cord is connected to a properly grounded electrical outlet for the server.

Network problems

See this topic to learn how to resolve issues related to networking.
• "Cannot wake server using Wake on LAN" on page 194
• "Could not log in using LDAP account with SSL enabled" on page 194
• "Register network with selected APN" on page 194
• "Log file" on page 194
Cannot wake server using Wake on LAN
Complete the following steps until the problem is resolved:
1. If you are using the dual-port network adapter and the server is connected to the network using Ethernet
5 connector, check the system-error log or XCC system event log (see
sure:
a. Fan 3 is running in standby mode, if Emulex dual port 10G Base-T embedded adapter is installed.
b. The room temperature is not too high (see
c. The air vents are not blocked.
d. The air baffle is installed securely.
2. Reseat the dual-port network adapter.
3. Turn off the server and disconnect it from the power source; then, wait 10 seconds before restarting the
server.
4. If the problem still remains, replace the dual-port network adapter.
Could not log in using LDAP account with SSL enabled
Complete the following steps until the problem is resolved:
1. Make sure that the license key is valid.
2. Generate a new license key and log in again.
Register network with selected APN
For some special cases, it is possible to be unregistered from the telecom operator. Register again with your
selected "APN" to the network using the command below:
AT+COPS=2
AT+CGDCONT=1,"IPV4V6","<APN>"
AT+COPS=0
Log file
Log files are collected by CLI commands below for SIM working status and Network Registration Status.
sudo at_command.sh 'at+cpin?'
sudo at_command.sh 'AT+CIMI'
sudo uci show network |grep lte /** check APN, username, password, auth, PDP type **/
Check Network Registration status:
ThinkEdge SE450 Maintenance Manual
194
"Specifications" on page
/** Is SIM well-installed? Is PIN-CODE setting correct? **/
/** read IMSI **/
"Event logs" on page 177), make
1).