Setup for connecting Router AUX port to switch console port.

[mario.romeropons]

Hello everyone, I was looking for a way to connect an AUX port from a 1700 router to a 6500 switch module console port, to see the output of the Switch's on the 1700 router, in case there is a network downtime, I could see what's going on in the switch, what cable should I use ? Also, is  there is any kind of documentation for this type of config what have I seen is very few info.

Thanks in advance, kind regards.

[John Blakley]

It may be easier to set up a crossover cable to a workstation running Wireshark. I've taken a console cable and connected it to a workstation and then connect the rj-45 connection into the wall jack. On the other end, I took a standard patch cable and connected it into the console port on a router. I was able to get a console connection from the workstation, so I think you would need to cut off the db9 connector and simply wire it as a straight through connection and crimp it. I would test that first by connecting it to a test router to see if you get anything back though...

Aside from that, I highly doubt that you'll be able to see anything on your router though if your switch were to flake out. These are console messages and not packet captures...

[Luisetebu]

Conect port AUX CISCO to port CONSOLE :

　

Config device port aux

!

user cisco password cisco

!

int loopback 100

ip address 1.1.1.1 255.255.255.255

!

line aux 0

login local

modem autoconfigure discovery

no exec

transport input all

telnet transparent

speed 9600

use ROLLOVER cable

RJ45     RJ45

1                8

2                7

3                6

4                5

5                4

6                3

7                2

8                1

use command "show line"

　

show line

Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int

0 CTY - - - - - 6 0 0/0 -

5 AUX 9600/9600 - - - - - 10 28 0/0 -

* 6 VTY - - - - - 33 0 0/0 -

7 VTY - - - - - 13 0 0/0 -

8 VTY - - - - - 20 0 0/0 -

9 VTY - - - - - 10 0 0/0 -

10 VTY - - - - - 4 0 0/0 -

Line(s) not in async mode -or- with no hardware support:

1-4

port AUX -> LINE 5

telnet "IP loopback" "port"  example port AUX 5 "port=2000+5"

Trying 1.1.1.1, 2005 ... Open

　

User Access Verification

Username: cisco

Password:*****

telnet 1.1.1.1 2005