EMC Connectrix B Series Hardware Reference Manual page 200

Troubleshooting
Table 35
Issue
Modems are not detected by switch.
CP Ethernet link speed is different than
expected or a link cannot be established.
Configuration data is inaccurate or cannot
be accessed.
Initial set up results in IP address/Domain
ID conflict.
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EMC Connectrix B Series ED-48000B Hardware Reference Manual
Troubleshooting the ED-48000B (continued)
Possible cause
Modems were connected after the
ED-48000B was powered on.
Modems are connected to the wrong
ports on the CP blades.
Modems are not correctly configured.
Pins on the modem cable or modem port
might be damaged.
There might be a conflict with the CP
Ethernet link speed negotiation set up by
the network.
Chassis was powered off/on while the
WWN card was uninstalled or failed.
The switch was rebooted while the WWN
card was uninstalled or failed.
The switch was connected to the fabric
before being configured.
Recommended action
Reboot the CP blade(s) to which the
modem(s) are connected.
Ensure that the modem cables are
connected to the ports labeled "RS232"
(the serial ports intended for terminal use
are labeled 10101).
Verify that the modems are configured as
specified in Chapter 8, "Setting Up and
Installing Modems".
Remove the cable and inspect the pins on
the cable and in the port. Do not reinstall
if the pins on either component have any
visible damage, as this could damage the
pins on the other component. Replace
components as required.
Specify the CP Ethernet link speed by
typing the ifModeSet command.
Install an operational WWN card and
power the system off/on again.
Refer to Chapter 3, "Initial Configuration
Parameters," and the for configuration
information.