Understanding Post Results - Cisco Catalyst 2955 Hardware Installation Manual
Cisco systems switch installation guide
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Understanding POST Results
Understanding POST Results
Note
Warning
Catalyst 2955 Hardware Installation Guide
5-2
After the power is connected, the switch automatically begins POST, a series of
tests that verifies that the switch functions properly.
The uplink port status LEDs provide system and status information during POST.
On the Catalyst 2955C-12 and 2955S-12, the uplink ports are labeled 13 and 14.
On the Catalyst 2955T-12, the uplink ports are labeled 1 and 2.
If you connect or disconnect the console cable with power applied to the
switch or any device on the network, an electrical arc can occur. This could
cause an explosion in hazardous location installations. Be sure that power is
removed or the area is nonhazardous before proceeding.
To verify switch operation, perform POST on the switch in a nonhazardous
location before installation. Statement 1065
When the Catalyst 2955C-12 and 2955S-12 begin POST:
Uplink port 13 LED is amber.
•
•
Uplink port 14 LED blinks green.
When the Catalyst 2955T-12 begins POST:
Uplink port 1 LED is amber.
•
Uplink port 2 LED blinks green.
•
If POST completes successfully on the Catalyst 2955C-12 and 2955S-12:
Uplink port 13 LED turns green.
•
Uplink port 14 LED goes off during the flash file system initialization.
•
If POST completes successfully on the Catalyst 2955T-12:
•
Uplink port 1 LED turns green.
Uplink port 2 LED goes off during the flash file system initialization.
•
Chapter 5
Troubleshooting
78-14944-03
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