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I am using FreeBSD to connect to a juniper switch using console connection.

I have crossover network cable: 1 end in switch and other in my freebsd laptop.

What do I need in freebsd and how do I watch what is going on when I poweron the switch?

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2 Answers 2

A console connection has to physically be made using a console cable to the device using either a special ethernet or serial cable. See if you can do a virtual console connection over ssh or telnet.

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I am using ethernet cable. But how do I detect it on my FreeBSD machine? Thanks. –  hari Aug 19 '12 at 18:16
    
What protocol on top of the ethernet does the Juniper switch console app run on? –  EhevuTov Aug 20 '12 at 0:18

This point has not been made clearly enough yet: Serious Networking Equipment often has an RJ-45 console port that is not ethernet at all. You need a cable or adapter with RJ-45 on one end and DB-25 or 9 on the other end. (and on a PC with no serial ports you probably need a USB serial adapter too.)

Here's an example of documentation for a console cable: http://kb.juniper.net/InfoCenter/index?page=content&id=KB13272&actp=RSS

There are many variants, so you have to get specific with the model number to find out for sure what you need.

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I have SRX 210 switch. Which has ethernet like console port. I am using cross-over Ethernet cable. Should I not use that? do I need that rj45 to db9 adapter? and attach that to my laptops serial port? –  hari Sep 4 '12 at 3:44
    
@hari I just googled "juniper srx210 console" and the first hit I got clearly shows a serial console: juniper.net/techpubs/en_US/release-independent/junos/topics/… and they say the adapter is provided in the "accessory box" –  Alan Curry Sep 4 '12 at 3:52
    
Okay, and, can I connect it directly to a monitor screen? –  hari Sep 5 '12 at 5:10
    
That question froze by brain. I don't know how to proceed. Have you never seen a serial port before? –  Alan Curry Sep 5 '12 at 20:36

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