Product specifications

Chapter 4: System Management Efficient Networks
®
Router family
Technical Reference Guide
Page 4-42 Efficient Networks
®
Routers with Six LEDs
If your router has six LEDs, the pattern of the four LEDs labeled TEST, LINK, WAN,
and LANT may indicate a fatal error. The error patterns are listed in the following
table. (Any other pattern of flashing LEDs indicates an internal error. Should this
occur, return the router to the factory for repair or replacement.)
TEST LINK WAN LANT Fatal Error
Off Off Off Blinking CPM failure
green
Off Off Blinking Off Timer failure
green
Off Off Blinking Blinking Bad FCS
green green
Off Blinking Off Off DRAM failure
green
Off Blinking Off Blinking Interrupt failure
green green
Off Blinking Blinking Off SCC failure
green green
Blinking Off Off Off CPU step failure
amber
Blinking Off Off Blinking Ethernet loop failure
amber green
Fast blink Off Off On, off, or Wait stuck in the boot menu;
green blinking kernel file could be missing.
Blinking Off Off On, off, or The router is issuing BootP
green blinking requests (10-second blink).
Any other combinations of the four LEDs flashing in a regular pattern
indicates an internal error. Should this occur, return the router to the factory
for repair or replacement.