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Problem Solving A-3
LED Descriptions
LED Descriptions
The module's LEDs provide dynamic indications of the module’s status. The LEDs can
be in various states (on, off, or flashing), and can change color (green or yellow)
depending on the operational status of the module or the level of activity on the
network.
Table A-1 shows the states that are possible for each of the module's LEDs.
Table A-1: Module LED States
1
The VNbus Status and Activity LEDs have different indications during a load state. Refer to the release notes for current
descriptions.
(continued on next page)
LED Off On (Green) On (Yellow) Flashing
Power LED No power or not
enough power
available in the
MultiSwitch
900.
Module is
receiving power.
N/A N/A
Module OK LED Self-test has
failed or is in
progress.
Module passed
self-test.
N/A Indicates a
downline load or
a nonfatal
failure.
VNbus Status
LED
No connection. Module is
properly
attached to one
of the backplane
VNbuses.
See release
notes.
1
(Green)
VNbus is
disconnected by
management
software.
VNbus Activity
LED
No traffic. N/A Heavy traffic.
See release
notes.
1
(Yellow) Port is
receiving/
transmitting
traffic on the
backplane.
LDM Port Status
LED
No link
established.
Proper link
established.
N/A Disabled.