Troubleshooting - Cisco GigaStack WS-X3500-XL Hardware Installation Manual

Troubleshooting

Table 3-1
GBIC and how to resolve them.
Table 3-1 Common Problems and Their Solutions
Symptom Possible Causes
GBIC module slot Spanning Tree Protocol
LED is amber. (STP) is checking for loops.
Port is initializing, it was
disabled by management or
an address violation, or it
was blocked by STP.
GBIC module slot Port is experiencing error
LED is flashing frames. This could be due to
green and amber. a duplex mismatch caused
by autonegotiation,
collisions, cyclic
redundancy check (CRC)
errors, or alignment errors.
GBIC module slot Device has no power.
LED is off.
No link or port was shut
down administratively.
Bad cable.
78-6460-04
describes how to identify problems with the switch and GigaStack
Corrective Action
Wait for STP to complete its search. The LED
turns green when STP completes its check.
Use the Cluster Management Suite or the IOS
command-line interface to check the status of the
port and to enable it.
Remove and reinsert the GigaStack GBIC.
Ensure that the switch and the target device have
power.
Verify that the GBIC cable is connected to another
active network device and that the port is not shut
down.
Replace with a known good cable.
Catalyst GigaStack Gigabit Interface Converter Hardware Installation Guide
C H A P T E R
3
3-1