My computer reboot when connecting to my 2651MX router ?

jeorge_kabbi

i am starting with CCNA . ihave a few 1650XM routers. because my computer is a new one i don't haveserial port in my computer ,so i purchased a USB to serial ( this one Manhattan Products - USB to Serial Converter (205146) , with this data sheet: http://www.manhattan-products.com/download/42704 ) i connected it to the front USB port of my computer and installed the driver (windows found and installed it )



then i connected the console cable to the console port of my router . i fired up putty and connected like this :




it works ,i even did a show version on my router (some copyright text was removed) :

Router>show ver
Cisco IOS Software, C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.4(15)T14, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Tue 17-Aug-10 05:40 by prod_rel_team


ROM: System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)


Router uptime is 2 minutes
System returned to ROM by power-on
System image file is "flash:c2600-adventerprisek9-mz.124-15.T14.bin"




Cisco 2651XM (MPC860P) processor (revision 4.1) with 253952K/8192K bytes of memory.
Processor board ID FTX0911C0RU
M860 processor: part number 5, mask 2
2 FastEthernet interfaces
1 Virtual Private Network (VPN) Module
32K bytes of NVRAM.
49152K bytes of processor board System flash (Read/Write)


Configuration register is 0x2102


Router>

however ,at seemingly random times my computer reboot ,yes just as if i pressed the hardware reset button. i tried to make the flow control XON/XOFF but the same result.


well my computer is rock solid with excellent specs i can put my life on that machine ,but shockingly it reboots !

just in case you ask i have this hardware :
cpu = Amazon.com: Intel Core i7-3820 Quad-Core Processor 3.6 GHz 10 MB Cache LGA 2011 - BX80619I73820: Computers & Accessories

motherboard = Amazon.com: Gigabyte LGA 2011 DDR3 2133 Intel X79 SATA 6Gb/s USB 3.0 ATX Motherboard GA-X79-UP4: Computers & Accessories

RAM = Amazon.com: Corsair Dominator Platinum 32GB (4x8GB) DDR3 2133 MHz (PC3 17000) Desktop Memory (CMD32GX3M4A2133C9): Computers & Accessories
32GB of them

windows 7 pro 64bit

any idea what is the problem or how i can proceed ?

Trashman

Your USB to Serial Converter is based on the Prolific PL2303 Chipset.

Try to manually install the latest driver (PL2303_Prolific_DriverInstaller_v1.9.0.zip) via Device Manager:
PL2303 Windows Driver Download

If that doesn't solve the issue, try using an older driver:

bit.ly/UAV4Ul

Hope this helps.

jeorge_kabbi

thankx. both drivers has the same problem.
so i guess it is driver issue ? any recommendation of a good quality product ?

Trashman

Under Device Manager on your computer can you check and see which driver is currently running for the adapter.
In v3.4.31.231 there was a fix for a issue: "Fixed Putty/HTerm BSOD issue in Win7 64-bit."

As a workaround, try to install and use one of these terminal emulators:

Tera Term (free)
SecureCRT (free 30-day evalution copy)

You just have to browse around and read reviews to find an alternative product.
If you look up your device on Amazon there seems to be a few people with similar issue.

jeorge_kabbi

i tried a different usb to serial cable ,same thing.

i tried tera term and viola : the problem disappeared !

MTciscoguy

I run a media machine with a gigabyte board in it and have had the exact same problem, running Win 7 64bit, I had to play with the memory settings to get it stable, running max memory with win 7 on some of their boards does not provide the correct timings and voltage to the memory which can cause random re-boots. you might do a google search about random re-boots on your board and see what others are saying about it.

Trashman

jeorge_kabbi wrote: »

i tried a different usb to serial cable ,same thing.

i tried tera term and viola : the problem disappeared !