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Appendix B IR-IP Interface Module Installation and Operation Manual
B-4 Physical Description ASMi-52 Ver. 2.5
IR-IP LEDs
IR-IP contains three LEDs, which indicate the module activity. Table B-3 explains
the functions of the IR-IP interface indicators.
Table B-3. IR-IP Interface Indicators
LED Name Function Color
LINK Lights when the Ethernet interface is connected to an active
LAN
Green
ACT Flashes when transmit and/or receive activity is present on the
Ethernet interface
Yellow
ERR Indicates erroneous events, such as collisions, buffer overflows,
etc. Also provides additional indications, described below in
this section
Red
Normal Indications
The IP router card can start normal service only after it has been configured for
operation in the user’s network. To simplify the configuration procedure, when an
unconfigured IP router card is powered on, it enters the configuration mode.
Power-Up Indications for Unconfigured IP Router Card
LINK indicator Lights steadily after power up when connected to an active
station (10BaseT only).
ERR indicator Lights steadily for 12 to 15 seconds, until the card completes
software decompression.
After this interval, the ERR indicator starts flashing rapidly (about
3 times per second), to indicate that the card is in the
configuration mode.
Configuration instructions are described further in the appendix.
Power-Up Indications for Configured IP Router Card
LINK indicator Lights steadily after power up when connected to an active
station (10BaseT only).
ERR indicator After software decompression, turns off.
Indications during Normal Service
During normal service, the LINK indicator lights steadily, indicating LAN integrity.
The ACT indicator flashes in accordance with the Ethernet interface traffic.
The ERR indicator is normally off, however it may light momentarily from time to
time, to indicate an occasional buffer overflow. If the ERR indicator lights often,
the IP router configuration may have to be changed, e.g., it may need more main
link bandwidth.