Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Setting up console sessions and resetting Cisco routers

Posted on 2010-11-18
7
Medium Priority
?
461 Views
Last Modified: 2012-05-10
I have three Cisco routers I want to play with. Earlier I have played littlebit with Cisco IOS in Dynamips, but now I want to try the real thing littlebit. Since I am a newbie on Cisco routers, I need some tips to get started.

I have a blue console cable(Serial DB-9 in one end and RJ-45 in the other). I have connected the DB-9 end to a computer with a Fedora 13 OS.

The three second hand Cisco routers with unknown config are:
Cisco 1601-R
Cisco 1721
Cisco 3620

Thanks for all help in advance! :)
0
Comment
Question by:itnifl
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 14

Accepted Solution

by:
SIM50 earned 1040 total points
ID: 34165544
I would guess you need to reset passwords and then reset to factory settings.

1. Password reset
Download Putty. Connect cable to console port.
Turn off the router and turn it back on.
During loading, within 60 seconds, press Break.
Type confreg 0x2142 at the rommon 1> prompt.
Type reset at the rommon 2> prompt.
Type no after each setup question.
Type enable at the Router> prompt.
Type copy startup-config running-config
Type configure terminal
Type enable secret cisco
Type config-register 0x2102
Type copy running-config startup-config
Reboot router and you should be able to get to enable mode using password cisco

2. Reset router to factory settings.
In enable mode type write erase
Type: reload and when prompted do not save.
0
 
LVL 17

Assisted Solution

by:pergr
pergr earned 400 total points
ID: 34172042
As far as I know 'putty' is only for Windows (and great). For linux you would probably use 'minicom'.
0
 
LVL 4

Assisted Solution

by:ciscocert
ciscocert earned 560 total points
ID: 34173141
Hi,

use the following link
http://www.cisco.com/en/US/products/hw/routers/ps259/products_password_recovery09186a0080094675.shtml

For your info there is a version of putty that works in linux also
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
LVL 2

Author Comment

by:itnifl
ID: 34182813
I have connected to the Cisco 1601-R router with Minicom. I am trying to push Break while startup to enter ROMMON mode. I am guessing Break is same as Esc. The router just boots all the way and doesn't react to my Break attempts. The same story with the Cisco 1721 router.
0
 
LVL 4

Assisted Solution

by:ciscocert
ciscocert earned 560 total points
ID: 34182986
Hi,
Break is not esc here. you can enter the rommon mode by holding crtl and press break( pause break key in keyboard ) it should be with in about 60 sec at the time of booting. Then you can proceed as per the link provided above.
0
 
LVL 4

Assisted Solution

by:ciscocert
ciscocert earned 560 total points
ID: 34182993
well  with minicom in  linux it works with Ctrl-a f.
0
 
LVL 2

Author Closing Comment

by:itnifl
ID: 34183245
Thank you for your help.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

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

For many of us, the  holiday season kindles the natural urge to give back to our friends, family members and communities. While it's easy for friends to notice the impact of such deeds, understanding the contributions of businesses and enterprises i…
I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…

705 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