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May 21, 2006 Archives

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Sunday, 21 May 2006

Digi and Cisco

Gord and I put together a Cisco lab. Quagga is great for the routing stuff, but it doesn't emulate switching at all.

We immediately ran into a problem when trying to connect the Cisco console ports to my Digi Portserver II/16: While both ends are RJ45, neither uses anything that could be described as a standard pin-out.

After a bit a of research, I discovered that a Cat5 cable wired as follows works for Cisco consoles. Note that the cable is directly -- the end labelled "Cisco" in the table must go to the Cisco unit, or the cable won't work. I recommend labelling the ends somehow.

Digi End
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8
DCD RTS GND TxD RxD SG CTS DTR
w/Gr Gr w/Or Bl w/Bl Or w/Br Br
w/Br w/Gr w/Bl w/Or Or Bl Br Gr
RTS DTR TxD GND SG RxD DSR CTS
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8
Cisco End

Note that I use "w/" as an abbreviation for "White", "Bl" for "Blue", "Gr" for "Green", "Br" for "Brown", and "Or" for "Orange".


Posted by Tillman Hodgson | Permanent Link | Categories: Hardware



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