OK. I’ve been a network guy since the 1980s. I thought had seen it
all. Today when I opened the box for my brand new 1900 router I found
a Cisco console cable blue USB to mini USB cable. Even more
surprising the router has a mini USB port on the back right next to
the Cisco-standard RJ-45 console port. Amazing! Looking through the
docs online I found the following procedure for connecting from a Mac
to the router via this USB to mini-USB cable.
Step 1 Use the Finder to go to Applications > Utilities > Terminal.
Step 2 Connect the Mac USB port to the router using the supplied USB
to mini-USB cable.
Step 3 Enter the following commands to find the OS X USB port number
macbook:user$ cd /dev
macbook:user$ ls -ltr /dev/*usb* [which returns something like below]
crw-rw-rw- 1 root wheel 9, 66 Apr 1 16:46 tty.usbmodem1a21
Step 4 Connect to the USB port with the following command followed by
the router USB port speed
macbook:user$ screen /dev/tty.usbmodem1a21 9600
[power on the router, wait for a few minutes and you should see
something like this…]
Installed image archive
Cisco CISCO1941/K9 (revision 1.0) with 1011712K/36864K bytes of memory.
Processor board ID FTX150900FE
2 Gigabit Ethernet interfaces
2 Serial(sync/async) interfaces
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity disabled.
255K bytes of non-volatile configuration memory.
1000944K bytes of ATA System CompactFlash 0 (Read/Write)
To disconnect the OS X USB console from the Terminal window
Enter Ctrl-a followed by Ctrl-