Solved

Connecting to Cisco Catalyst 2960 Console Port

Posted on 2012-03-13
7
2,135 Views
Last Modified: 2012-03-21
I've got a switch I need to get into and troubleshoot.  On the front it says Catalyst 2960G Series.  On the back it doesn't have an RJ-45 Console connection -- It has a Serial DB-9 / DE-9 / COM / Whatever port!  I have a cable that goes Serial-to-Serial and tried different Baud Rates and other settings to no avail.  All our other switches (and all other Cisco equipment I've been on) use a Serial-to-RJ45 cable.  What is weird is that the data sheets that I could find for this series of switch only has manuals saying to use a Serial-to-RJ45 cable provided with the switch.

Does anybody have any insight into this?  Seen this before?  Do I need a special Cisco serial cable?

More about the switch: It's got 20 ports plus 4 combo ports [Ethernet or fiber].
0
Comment
Question by:netjon
7 Comments
 
LVL 7

Expert Comment

by:frajico
ID: 37716528
Does it have a mini-usb on the front of the switch? This is the new Console port. Just connect a PC with a USB to mini-USB cable to the switch
0
 
LVL 17

Expert Comment

by:lruiz52
ID: 37716530
thats interesting my cisco 2960's have the console port in front on right side between USB and Management Port. can you post a Pic?
0
 
LVL 7

Expert Comment

by:frajico
ID: 37716535
I think you also have to download the USB Console Software from Cisco
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Accepted Solution

by:
netjon earned 0 total points
ID: 37716594
This is the only pic I have of the switch.  It's a remote location so I'd have to schedule a time to go back out there to do anything else or take any more pics.  I don't see a USB port in this image; Where would it be?  I also don't recall seeing one when I was out there.
20120313-002.jpg
0
 
LVL 14

Expert Comment

by:Otto_N
ID: 37720349
The picture is of a 2960G-24TC-L Switch (see the Hardware install guide at http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/hardware/installation/guide/higover.html#wp1174601). According to the same installation guide, the console port is an RJ-45 connector at the back (also, no USB).  I've never seen anything else on these models, even the oldest ones.

If it's not a case of mistaken identity (looking at the back of a different device), and the switch really have only a DB-9 console port, your DB9-to-DB9 cable should be a Null-modem cable (pins 2->3, 3->2 and 5->5 should be sufficient), as the switch should be a DTE port (Male connector, and the same as your laptop).  Whether the concolse port is RJ-45 or DB-9, the settings should be the same - 9600 baud, 8 data bits, 1 stop bit, 0 parity and no flow control.  However, as there is no documentation on this, this is only guesswork, at best.

If you have any other detail of the switch (model number, serial number, pictures) we might be able to dig up some more information.
0
 
LVL 3

Expert Comment

by:pistanu
ID: 37729818
rj45 to db9 serial cable(cisco cable)

9600 8N1 no parity.

if you dont receive nothing in console assume that your serial connection and cable are ok, change the speed, maybe some admin before you change this.
0
 

Author Closing Comment

by:netjon
ID: 37746298
I'm an idiot; I was looking at the wrong device when I was looking in the back of the rack to determine where the switch was.
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
small, multi network, problem 3 100
Accessing two networks from one PC 30 116
Switched virtual interface on layer 2 switch 2 35
HP network exams 3 34
This article will step through configuring a SonicWALL appliance to utilize an internal DHCP server for Global VPN Client (GVC) hosts.  There are times when using an external (external to the SonicWALL) DHCP server, such as Windows Servers, isn’t pr…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question