Brugerhåndbog Cisco Systems Computer Hardware 2900 Series Xl [79/138 Sider]

Cisco Systems computer hardware 2900 SERIES XL

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3-3

Catalyst 2900 Series XL Hardware Installation Guide

78-6461-03

Chapter 3 Troubleshooting

Diagnosing Problems

Correcting Module POST Failures

If you install modules WS-X2914-XL or WS-X2922-XL in a Catalyst 2924M XL

or Catalyst 2912MF XL switch, the module fails POST. This failure occurs

because the expansion modules support 2048 MAC addresses and the switch

supports 8192 MAC addresses. To correct the failure, restart the switch with the

module installed. After the restart, the address capacity of the switch is reduced

to 2048 MAC addresses.

Diagnosing Problems

Common switch problems fall into the following categories:

• Poor performance

• No connectivity

• Corrupted software

Table 3-2 describes how to detect and resolve these problems.

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