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Troubleshooting Network Connectivity Problems
5-3
Troubleshooting
Network
Connectivity
Problems
If the Edge Router module does not appear to be routing traffic properly on
the network, it may indicate that there is no connection to the network.
Try performing one or more of the following troubleshooting actions:
■
For ONline and ONcore Edge Router modules only, use the 3Com
management interface (for example, ONline management module) to verify
that the Edge Router module backplane port is set to the appropriate
backplane network (channel).
■
Using the Cisco terminal interface, verify that the following parameters are
set correctly:
■
IP address
■
Subnet mask
■
Default gateway
■
Use the ping utility to confirm that there is network connectivity.
■
Use the cisco>show interfaces ethernet 0
command to verify that
the interface is up and running. This command reports Ethernet statistics
that aid you in troubleshooting the network.
If the interface is down, you may need to use the Cisco configuration editor
to issue the no shutdown
command. The no shutdown
command
restarts a disabled interface.
■
Verify that your router configuration is valid. Refer to the Cisco Systems
Troubleshooting Internetworking Systems
guide for more information.