Installation Manual

4-2
Troubleshooting
Reading the LEDs
Maintenance
Table 4-1 describes the LEDs which are located on the front panel of the host
device.
Table 4-1. LEDs on the Host Device Front Panel
NOTE
Although the “Fault” orange LED on the host device front panel is not for this
HP AdvanceStack Internet Router only, the fault condition of the router is
OR’ed with the fault condition from other devices in the host and the host
itself. Therefore it is necessary to check all devices in the host device,
including this HP J3138A Internet Router, if the “Fault” orange LED on the
host device front panel is flashing.
LED State Description
WAN 1
Activity
Off Inactivity on the synchronous serial port 1. If you are sure some data activity is going
on this port, check the serial 1 cable connection.
On/Flashing Transmitting/Receiving data on the synchronous serial port 1.
WAN 0
Activity
Off Inactivity on the synchronous serial port 0. If you are sure some data activity is going
on this port, check the serial 0 cable connection.
On/Flashing Transmitting/Receiving data on the synchronous serial port 0.
BRI
Activity
Off Inactivity on the ISDN BRI port. If you are sure some data activity is going on this
port, check the BRI cable connection.
On/Flashing Transmitting/Receiving data on the ISDN BRI port.
LAN
Activity
Off Inactivity on the LAN Ethernet port. If you are sure some data activity is going on
this port, check the Ethernet cable connection that goes into the front of the host
device.
On/Flashing Transmitting/Receiving data on the LAN Ethernet port.
J3138.bk Page 2 Wednesday, March 18, 1998 6:07 PM