Solved

Catalyst 2950 Xmodem I/O error message

Posted on 2004-08-24
9
3,921 Views
Last Modified: 2008-01-09
I have a catalyst 2950G that's had the flash file deleted. Since TFTP isn't an option now, I thought I could xmodem into the thing and download the IOS that way. Well each time I try, I get the following error message.

switch: copy xmodem: flash:c2950-i6k2l2q4-mz.121-13.EA1b.bin
Begin the Xmodem or Xmodem-1K transfer now...
CCCCCCCCCCBB0BB0xmodem:: I/O error

Any ideas ?
0
Comment
Question by:swpa_wnt
9 Comments
 
LVL 79

Expert Comment

by:lrmoore
ID: 11883683
Did you use the exact procedures in this document:
http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml

Are you sure you have a good copy of the .bin file? Yours could be corrupt...
0
 

Author Comment

by:swpa_wnt
ID: 11884500
Yes I followed the suggested steps to the "T" however, I still got the same error message.  I also tried to tftp to the switch just for the heck of it and I got this error.

switch: copy tftp://10.40.1.253/c:/c2950-i6q4l2-mz.121-22.EA1.bin flash
tftp://10.40.1.253/c:/c2950-i6q4l2-mz.121-22.EA1.bin: permission denied

This is what I see when I do a "dir"

List of filesystems currently registered:

               flash[0]: (read-write)
              xmodem[1]: (read-only)
                null[2]: (read-write)
                  bs[3]: (read-only)

Finally, this is what I see when I power down and let the switch come up on it's own, without holding in the mode button.

modem file system is available.
Initializing Flash...
flashfs[0]: 2 files, 1 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 7741440
flashfs[0]: Bytes used: 2560
flashfs[0]: Bytes available: 7738880
flashfs[0]: flashfs fsck took 4 seconds.
...done initializing flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Parameter Block Filesystem (pb:) installed, fsid: 4
Loading ""...: permission denied

Error loading ""

Interrupt within 5 seconds to abort boot process.
Boot process failed...

The system is unable to boot automatically.  The BOOT
environment variable needs to be set to a bootable
image.
0
 
LVL 79

Expert Comment

by:lrmoore
ID: 11884851
What are you using for a TFTP server on the PC?
You don't need the "c:/" in the file.
Assuming that the .bin file is located in the tftp server root directory:

copy tftp://10.40.1.253/c2950-i6q4l2-mz.121-22.EA1.bin flash:
                                                                                  ^^^^ you need the destination..
0
 

Author Comment

by:swpa_wnt
ID: 11885006
I'm using TFTPD32.exe by Ph Jounin.  The base directory on the tftp server is set to c:\ which is where my bin file is located. Destination as in ??? ( flash://ip of switch)  
0
How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

 
LVL 79

Expert Comment

by:lrmoore
ID: 11887815
Use the command excatly as I have it posted..
The destination is "flash:" meaning the local flash file on the switch. It knows this..

copy tftp://10.40.1.253/c2950-i6q4l2-mz.121-22.EA1.bin flash:

0
 

Expert Comment

by:mxrahman
ID: 12032386
I had identical problem: getting I/O error.
First I gave the command:
switch: copy xmodem: flash:c2950-i6k2l2q4-mz.121-13.EA1b.bin  
after pressing 'enter' as soon as you see CCCCC..   open the  the pull-down menu
at the top of the Hyperterm window, select Transfer, select the image file, then Send File.

That's how I got image on my 2924XL


0
 
LVL 79

Expert Comment

by:lrmoore
ID: 12078642
Not until we have the resolution documented. If the author fixed the problem without using any of our suggestions, then the solution should be posted.
0
 

Accepted Solution

by:
ee_ai_construct earned 0 total points
ID: 12102354
Please read entire thread.  Asker solved or content important.
Closed, no points refunded.
ee_ai_construct (replacement part #xm34)
Community Support Admin
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

New Server 172.16.200.2  was moved from behind Router R2 f0/1 to behind router R1 int f/01 and has now address 172.16.100.2. But we want users still to be able to connected to it by old IP. How to do it ? We can used destination NAT (DNAT).  In DNAT…
In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

706 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

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now