what else can you connect to the aux port other than a modem? can a workstation be plugged in?
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What do you use the AUX port for??
- Thread starter markjrees
- Start date
headlessringmaster
IS-IT--Management
Can also be used to console into other devices. For example -
WORKSTATION_serial ----> consoleport_ROUTER_auxport ----> consoleport_CISCODEVICE
NB: aux is asuync - cannot connect ethernet to it.
Good day!
Paul
WORKSTATION_serial ----> consoleport_ROUTER_auxport ----> consoleport_CISCODEVICE
NB: aux is asuync - cannot connect ethernet to it.
Good day!
Paul
to console into a router via aux port you have to set te line aux 0 to receive all kind of transport. And then telnet to one of your router's interface using port 200*
router#line aux 0
router(line)#transport all
router(line)#^Z
router#telnet (interface address) 2001
see for detail at cisco website for "REVERSE TELNET" guide
router#line aux 0
router(line)#transport all
router(line)#^Z
router#telnet (interface address) 2001
see for detail at cisco website for "REVERSE TELNET" guide
headlessringmaster
IS-IT--Management
If you're trying to console into a router via its aux port, no special commands are necessary. Just make sure there's no config on the aux line to block console access.
If you're on the router trying to telnet to the aux port (to reach an attached device), first have a config on the aux port that will let you do that. Try this:
line aux 0
login authentication 1
no exec
transport input all
Then - when you want to telnet to the aux port, do like so:
# telnet [local_ip] [port]
The local ip - use your loopback address. If you don't have one - create one. If something is stopping you from doing that - then you should be able to use the IP of an interface.
The port number is a little tricky. Basically - it's the 2xxx port number that the router assigns to the aux port. To find it, do a
# show line
Find the line with AUX as the type (there will only be one). The number to the left will be the number for the aux port. So, considering the 2xxx port number format, fill in the x's with the number you get for the aux port.
So, for example, I have a 3640. The loopback is 10.1.1.1. When I do the show line, I find the aux port listed:
129 AUX 9600/9600 - - ....
So, to telnet to the Aux port, I'd do a
# telnet 10.1.1.1 2129
If you have a smaller router, expect to see a lower number like:
65 AUX 9600/9600 - - ....
Then you just do # telnet 10.1.1.1 2065.
Good day!
Paul
If you're on the router trying to telnet to the aux port (to reach an attached device), first have a config on the aux port that will let you do that. Try this:
line aux 0
login authentication 1
no exec
transport input all
Then - when you want to telnet to the aux port, do like so:
# telnet [local_ip] [port]
The local ip - use your loopback address. If you don't have one - create one. If something is stopping you from doing that - then you should be able to use the IP of an interface.
The port number is a little tricky. Basically - it's the 2xxx port number that the router assigns to the aux port. To find it, do a
# show line
Find the line with AUX as the type (there will only be one). The number to the left will be the number for the aux port. So, considering the 2xxx port number format, fill in the x's with the number you get for the aux port.
So, for example, I have a 3640. The loopback is 10.1.1.1. When I do the show line, I find the aux port listed:
129 AUX 9600/9600 - - ....
So, to telnet to the Aux port, I'd do a
# telnet 10.1.1.1 2129
If you have a smaller router, expect to see a lower number like:
65 AUX 9600/9600 - - ....
Then you just do # telnet 10.1.1.1 2065.
Good day!
Paul
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