Allied Telesis AR Series Hardware Reference Manual page 42

42
Table 19: Functions of AT-AR740 router LEDs. (Continued)
LED
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
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-AR740 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-AR740 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}
The SHOW SYSTEM command displays the state of the main power supply
and fan, and whether or not the RPS is being monitored. If RPS monitoring is
enabled, it also shows whether an RPS is connected, and the state of its output
voltage and fan.
When a fault occurs in the main power supply or fan, system LEDs on the
AT-AR740's front and back panels are flashed in a pattern that identifies the
fault (Table 19 on page 41). If RPS monitoring is enabled, the system LEDs also
flash to indicate failures in the RPS connection, power supply or fan. Multiple
faults are indicated by cycling through each error code.
The Main System
Main features of the AT-AR740 base CPU card are:
I
80 MHz RISC processor.
I
1 MByte of EPROM.
I
16 MBytes of synchronous DRAM.
I
6 MBytes of FLASH memory.
I
128 KBytes of battery backed SRAM.
I
2 x 10/100 Mbps autosensing Ethernet LAN ports.
I
2 RS-232 asynchronous serial ports.
I
2 PIC bays.
I
1 hot swappable Network Service Module (NSM) bay.
I
1 MAC slot for a MAC compression/encryption card.
I
1 PAC slot for PAC compression and/or encryption cards.
I
Redundant power supply (RPS) and -48V DC power supply options.
AR Router
C613-03031-01 REV C