Use this procedure to troubleshoot when the SoL session
drops unexpectedly.
Problem
You can establish a Serial over LAN session,
but the session drops unexpectedly.
Investigation
Perform these steps to resolve
the problem:
- Verify that the advanced management module has
a sufficient timeout value. The default timeout value is 120 seconds
for console sessions, but it can be changed. For example, to change
this value to infinity using the advanced management module command-line
interface, enter the command:
telnetcfg -T system:mm[1] -t 0
For information about using this command, see
the Advanced Management Module Command-Line
Interface Reference Guide.
- Make sure that you are not attempting to access a blade server
through Serial over LAN and
attempting to boot the blade server using PXE at the same time. Serial over LAN traffic
shares blade server internal Ethernet port 1 with regular Ethernet
traffic. Traffic from a network install server running through blade
port 1 can block Serial over LAN traffic
which will cause the Serial over LAN session
to become nonresponsive.
- Verify that the latest Ethernet driver is installed on the blade
server, especially for blade servers running a Linux operating system.
- Make sure that you do not type on the keyboard while the blade
server is rebooting or the operating system network drivers are loading.
This can cause the Serial over LAN session
to drop.