A
T
ROUBLE
C
LEARING
AND
T
ECHNICAL
S
PECIFICATIONS
This appendix contains 486 Network Managemement Card (NMC)
Network Application Card (NAC) trouble clearing information and
technical specifications.
Trouble Clearing
This section contains information to help you trouble clear problems that
may occur after you first install and power-up a 486 NMC NAC.
NMC LEDs
Use the NMC LEDs to diagnose power-up, boot, and connectivity errors.
This table lists the NMC NAC LEDs and their possible conditions.
Description
Status
Meaning
Run/Fail (RN/FL) Solid green
Normal/diagnostics mode/boot-up self-test
Solid red
Critical Failure
Flashing
red/green
Non-critical failure on initial power-up
Flashing
green
Testing or software download (required or in pro-
cess)/also during boot-up sequence
Hub Status
Solid green
Chassis normal/diagnostics mode
Solid red
Chassis critical failure
Flashing red Management bus failure with card in chassis
LAN TX
Green
OFF
NMC transmitting data on LAN port
No data being transmitted on LAN port
LAN RX
Green
OFF
NMC receiving data on LAN port
No data being received on LAN port
WAN TX
Green
OFF
NMC transmitting data on WAN port
No data being transmitted on WAN port
WAN RX
Green
OFF
NMC receiving data on WAN port
No data being received on WAN port
