Allied Telesis AR Series Hardware Reference Manual page 50

50
Table 22: Functions of AT-AR745 router LEDs.
LED
Front panel Rear panel
ETH
LNK/ACT
100M
PIC0/PIC1
BASE
Power PWR
Run RUN
System SYS
Security SEC
Activity
(Compact Flash)
ENGINE
ACT
DAT
ERR
Clear CLR
NSM
Swap
In Use
1. Hot swapping is supported by Software Release 2.3.1 or later. AT-AR021 (S) BRI-S/T, AT-AR021 (U) BRI-U, AT-AR022 ETH, AT-AR023 SYN,
and AT-AR026 4ETH PICs can be hot swapped.
Function
These LEDs give indications about the Ethernet interfaces.
Lit green when the Ethernet interface is connected to a device (e.g., a hub) which is
generating link pulses. Lit yellow indicates transmission or reception activity.
Lit when the Ethernet interface is in 100 Mbps mode.
Lit when a PIC is inserted in either PIC bay 0 or PIC bay 1 (one LED for each PIC).
These LEDs indicate the state of the main router unit.
Lit when power is supplied and the router is switched on.
Lit when the internal processor is executing code. If the processor stops for any reason
(a fault condition), then the LED will not be lit.
Lit when the switch or management software is malfunctioning. Flashes to indicate
fan, PSU, and RPS faults.
1 Flash: A switch fan has failed.
2 Flashes: If an RPS is connected and RPS monitoring is enabled, an RPS fan has failed.
3 Flashes: If an RPS is connected, the switch's PSU (Power Supply Unit) has failed.
4 Flashes: If RPS monitoring is enabled, the RPS PSU has failed.
5 Flashes: If RPS monitoring is enabled, an RPS is not connected or is not operational
Lit when a user is logged in with SECURITY OFFICER privilege and the router is in
SECURITY MODE.
Lit when the compact flash card is accessed.
Do not remove the compact flash card when the LED is lit.
These LEDs give indications about a MAC card, which can be installed for encryption
and/or compression purposes.
Lit when a MAC card is installed in the MAC slot.
Lit when data is transferred to or from the MAC card.
Lit when there is an error in the data transmission to or from the MAC card.
Lit when a secure router has enabled PPP interfaces or Frame Relay circuits that are
configured to send clear text.
These LEDs give indications about an NSM installed in the router.
Lit when the NSM and its PICs are powered down and can be hot swapped. Only lights
if the Hot Swap button has been pressed and the software release supports hot
1.
swapping
Lit when an NSM is correctly installed. If the software release supports hot swapping,
it indicates that the NSM and its PICs are powered up and may not be swapped.
The AT-AR745 router automatically monitors its own power supply and fan,
and has the option of a redundant power supply. If a redundant power supply
(RPS) is attached, the AT-AR745 software can detect the presence of the RPS
and the state of its output voltages and fan. RPS monitoring, turned off by
default, can be turned on or off using the command:
SET SYSTEM RPSMONITOR={ON|OFF}
AR Router
C613-03031-01 REV E