LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices


Reply
  Search this Thread
Old 04-13-2016, 12:49 PM   #1
linuxbird
Member
 
Registered: Feb 2006
Distribution: Slackware
Posts: 543

Rep: Reputation: 36
Cisco 3750 switch


I picked up a Cisco 3750 switch to provide PoE to some cameras. I am working on navigating Cisco's docs, but had a few questions:

The RJ-45 "console" connector in the back...what kind of interface is it?

Can I access the switch with a terminal emulator or a web browser through a switch port?

Is there a "factory reset"?

Thanks.
 
Old 04-13-2016, 12:54 PM   #2
Wells
Member
 
Registered: Nov 2004
Location: Florida, USA
Distribution: Debian, Redhat
Posts: 417

Rep: Reputation: 53
The RJ-45 console is a serial console connection. Hopefully your 3750 came with one of the nice Cisco light blue serial cables and you will be able to access it with that.

Typically the serial connection is set to 9600 8n1.

Once you have that connection working properly, you can do a factory reset on the switch using various arcane commands. A quick google search should turn those up.
 
2 members found this post helpful.
Old 04-13-2016, 01:58 PM   #3
jstephens84
Senior Member
 
Registered: Sep 2004
Location: Nashville
Distribution: Manjaro, RHEL, CentOS
Posts: 2,098

Rep: Reputation: 102Reputation: 102
Cisco 3750 switch

if you connect to the switch through the cli you will then need to do a wr erase startup and then issue a reboot. I don't think you will need to do a conf t but if those commands above don't work try a conf t
 
Old 04-13-2016, 07:02 PM   #4
linuxbird
Member
 
Registered: Feb 2006
Distribution: Slackware
Posts: 543

Original Poster
Rep: Reputation: 36
Ah, the only cord I got for my $50 was a power cord. So it looks like I have to build a serial cord.

If I can feed a PL-2303 (I think that is the right chip) then I can put the signal on a USB cable.

I haven't googled yet, but if someone has the pinouts for the RJ-45, that would be what I need to cobble up a serial to USB adapter, unless someone knows that might be a problem.
 
Old 04-14-2016, 08:45 AM   #5
Wells
Member
 
Registered: Nov 2004
Location: Florida, USA
Distribution: Debian, Redhat
Posts: 417

Rep: Reputation: 53
Quote:
Originally Posted by linuxbird View Post
Ah, the only cord I got for my $50 was a power cord. So it looks like I have to build a serial cord.

If I can feed a PL-2303 (I think that is the right chip) then I can put the signal on a USB cable.

I haven't googled yet, but if someone has the pinouts for the RJ-45, that would be what I need to cobble up a serial to USB adapter, unless someone knows that might be a problem.
Do a google search for "cisco serial cable pinout rj45" and take a look at the first response, a PDF. Third page of the PDF has the pinout.

Or just buy one of the $1.95 cables that are also available.
 
Old 04-20-2016, 02:18 AM   #6
JJJCR
Senior Member
 
Registered: Apr 2010
Posts: 2,182

Rep: Reputation: 450Reputation: 450Reputation: 450Reputation: 450Reputation: 450
you can ask here:

https://supportforums.cisco.com/comm...ng-and-routing

or check out this link:
http://www.omnisecu.com/cisco-certif...-or-switch.php
 
Old 04-21-2016, 12:35 PM   #7
jefro
Moderator
 
Registered: Mar 2008
Posts: 22,048

Rep: Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632Reputation: 3632
Pretty sure the cable is simply a one for one straight through. No mixing of turning of connectors.

Generally you can use a usb to serial adapter for this.

If the thing is still programmed you might try to use an ethernet cable (tcp/ip) to some of the ports. Make a few static arp entries so the switches ip would then be in range to connect.

The serial port is painfully slow.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Password not accepting by l3 cisco 3750 switch while conecting it by serial port boby.kumar Linux - Networking 1 04-12-2013 10:06 PM
ok network problem with the cisco e3200 router and cisco se2800 switch to ps3 linux/unix87 Linux - Hardware 0 03-07-2012 06:04 PM
How to create vlan in linux using cisco 3750 switch tushs Linux - Networking 3 05-25-2011 03:04 AM
Cisco switch vande012 Linux - Networking 42 08-21-2007 08:06 PM
Cisco 1900 switch vande012 General 1 08-10-2007 05:42 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 01:54 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration