Console connect to Cisco routers via minicom

Here’s a step-by-step set of instructions on how to console onto your cisco router or switch from your mac using minicom.
Install minicom via Fink [Fink minicom page]. In the Terminal, type fink install minicom
Purchase the Keyspan PDA adapter. Install the driver and reboot
Configure minicom. Type minicom -s in the Terminal, and select Serial port setup (using the up and down arrows). Set the serial device to look as follows:

x A – Serial Device : /dev/cu.USA19QI191P1.1
x B – Lockfile Location : /sw/var/run
x C – Callin Program :
x D – Callout Program :
x E – Bps/Par/Bits : 9600 8N1
x F – Hardware Flow Control : No
x G – Software Flow Control : No
x Change which setting?

Verify your “Serial Device” by looking through /dev on your computer for something that looks approximately like above. You might do ls /dev/cu* to find it fast. Don’t choose /dev/cu.modem, and note the “E” settings — this is what Cisco routers require, and note that there’s no flow control of any kind. Save setup as dfl; this is the default config which minicom uses on launch.

Read the rest of the hint for the remainder of the steps.

You will need the following cabling:

  • patch cable say 7″ long
  • Cisco rj45 to db9 converter with “Terminal” on oneside 74-0495-01 on the other
  • db9 female to db9 male null modem cable
  • Keyspan PDA converter

Connect the cables:

#1 into the console port of the router
#2 goes into #1
#3 goes into #2
#4 goes into #3 and into a USB slot on the back of your Mac.

Shut the router down, then type sudo minicom. You will see Initializing modem; you should then connect to your router.

IMPORTANT: When you are done you must hang up the connection. Hit Control-A then hit z then hit x then hit Return. You will see Resetting Modem, and then you will exit out of minicom.

One Response

  1. Anthony Gressman February 2, 2012

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