Cisco 3030 User Manual download pdf (Page 52)

3-4

Cisco Catalyst Blade Switch 3030 Hardware Installation Guide

OL-8389-01

Chapter 3 Troubleshooting

Diagnosing Problems

No connectivity Incorrect or bad cable

These are results of no link at both

ends:

• A crossover cable was used

when a straight-through was

required, or the reverse.

• The cable is wired incorrectly.

• A crossover or straight-through

cable is wired incorrectly.

• STP checking for possible

loops.

• For the correct pinouts and

the proper application of

crossover or

straight-through cables, see

the “Two Twisted-Pair

Cable Pinouts” section on

page B-4.

• Replace with a tested good

cable.

• For 1000BASE-T

connections, be sure to use

a twisted four-pair,

Category 5 cable.

• Wait 30 seconds for the port

LED to turn green.

Unreadable characters on the

management console

Incorrect baud rate. Reset the emulation software to

9600 baud.

Amber system LED

Fatal POST error detected. Contact Cisco Systems.

The switch port is placed in

error-disabled state after SFP

module is inserted

Bad or non-Cisco-approved SFP

module.

Remove the SFP module from

the switch, and replace it with a

Cisco-approved module. Use the

errdisable recovery cause

gbic-invalid global

configuration command to

verify the port status, and enter a

time interval to recover from the

error-disable state.

Refer to the switch command

reference guide for information

on the errdisable recovery

command.

Table 3-1 Common Problems and Their Solutions (continued)

Symptom Possible Cause Resolution

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 71 72

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