Enterasys Matrix 7G4202-30, Hardware Installation Manual

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Troubleshooting 4-1
4
Troubleshooting
This chapter provides information concerning the following:
•
Using LANVIEW ( Section 4.1 )
•
Troubleshooting Checklist ( Section 4.2 )
•
DFE Module Shutdown Procedures (Special Instructions) ( Section 4.3 )
•
Recommended Shutdown Procedure Using RESET Button ( Section 4.3.1 )
•
Last Resort Shutdown Procedure Using RESET Button ( Section 4.3.2 )
Unless otherwise noted, the following information applies to all DFE modules.
4.1 USING LANVIEW
The modules use a built-in visual diagnostic and status monitoring system called LANVIEW. The
LANVIEW LEDs (
Figure 4-1 ) allow quick observation of the network status to aid in diagnosing
network problems.
About the Management (MGMT) LED
The MGMT LED (shown in Figure 4-1 ) indicates when the module is serving as the Management
Module to control the management functions for all DFE modules in the chassis. The Management
Module handles all IP requests to the chassis IP address, such as PING, Telnet, SNMP, HTTP, etc.
The Management Module also handles the CLI configuration sessions via the console port. So,
when you plug into a DFE module COM port to configure a DFE module in the chassis, it is
handled by the Management Module regardless of the DFE module COM port that you use.
Viewing the Receive and Transmit Activity
On the 7H4382-49, 7H4383-49, 7G4270-12, 7G4202-30, and 7H4203-72 DFE modules, you can
view the receive and transmit activity on the RX and TX LEDs. However, only one group of 12
ports may be viewed at a time on the 7H4382-49, 7H4383-49, or 7H4203-72.
To view the receive and transmit activity on a group of 7H4382-49, 7H4383-49, or 7H4203-72
segments, press the GROUP SELECT button (see
Figure 4-1 ) to step to the group of interest