Serial Connections

This article documents the physical serial ports on each machine and the connections between them. These connections are used for console access using Conserver.

MC 3015

taurine              ttyS1 LOM <- calum                vsp   115200
ascorbic-acid        ttyS0 LOM <- artificial-flavours  ttyS0 9600
ginseng              ttya      <- taurine              ttyS0 115200
potassium-citrate    ttyS0     <- ascorbic-acid        ttyS1 115200
citric-acid          ttyS0 LOM <- potassium-citrate    ttyS1 9600
caffeine             ttyS0     <- citric-acid          ttyS1 115200

MC 3036

phosphoric-acid      ttyS0     <- sodium-citrate       ttyS0 115200
sodium-citrate       ttyS1     <- phosphoric-acid      ttyS1 115200
acesulfame-potassium ttyS0     <- natural-flavours     ttyS0 115200
dumbterm                       <- caramel-colour       ttyS1 19200

Machine Ports

Most machines either have no serial ports, or one DE-9 serial port. Details of other configurations are listed here. We do not have any modems (DCE), so all connections should be crossed (i.e., use null modem cables or compatible).

taurine

taurine has a virtual serial port that can be accessed via telnet or SSH

ttyS0 physical DE-9
ttyS1 virtual

ascorbic-acid

ascorbic-acid has two Sun 8P8C serial ports stacked vertically, with the first port on top. The first port may be used to access LOM, and probably has to be set to 9600 baud.

A (ttyS0, LOM)
B (ttyS1)

These ports should be connected to another system's DE-9 using a DE-9<->8P8C modular adapter and an Almost Rollover or standard rollover.

potassium-citrate

potassium-citrate has two DE-9 serial ports side by side, with the second port on the left

101102 (ttyS1) 101101 (ttyS0)

citric-acid

citric-acid has two DE-9 serial ports stacked vertically, with the second port on the bottom, and a dead DE-9 labeled "modem" to its right. The first port must be run at 9600 baud to access the embedded remote console.

ttyS0 X
ttyS1 modem

sodium-citrate

sodium-citrate has two DE-9 serial ports side by side, with the second port on the left

ttyS1 ttyS0

caramel-colour

caramel-colour has two DE-9 serial ports

ttyS0 on motherboard I/O shield
ttyS1 on motherboard in a PCI header

phosphoric-acid

phosphoric-acid has two DE-9 serial ports

ttyS0 on motherboard I/O shield
ttyS1 on motherboard in a PCI header

dumbterm

dumbterm has one DB-25 serial port. It is currently connected to a black nonstandard DB-25<->8P8C adapter, to a special twisted pair cable, to a nonstandard 8P8C<->DE-9 adapter. All of these pieces are labeled "dumbterm". The dumbterm cable is not symmetric; the end labeled "DE-9" must be plugged into the DE-9 adapter.