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Silver

3620 IOS upgrade problem

Hello!

I need some help. I have a 3620 and it had IOS image 12.3(17a) IP Feature set. I got 12.3(17b) Enterprise plus to upgrade.

The router has 64MB DRAM and 16MB of Flash. I copied the first IOS image over to my TFTP server (just incase). Then I copied over the newer IOS image from the tftp server to my router. The image copied over fine (all !'s) and the checksum was fine (displayed a OK).

Then when I rebooted the router is wont boot up. I uncompresses the image and displays a (OK) after all the ### characters. BUT here is my problem. It then says "error: uncompressed check sum incorrect" or something to that affect. Then it tries to load via the two external flash slots. After that is goes into Rommon 1> mode.

It could be the image or the flash module. Dont think it would be the flash module. How do I put the previous IOS image back on the router via the rommon mode to get this router working again???

Thank you guy and girls in advance!!

Scott

21 REPLIES
Silver

Re: 3620 IOS upgrade problem

Well, I did a little lookin around on cisco site and found this link

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bfac.shtml#proc_3600

Is this what I need to do?

Scott

Silver

Re: 3620 IOS upgrade problem

Ok, just an update.

I used the Xmodem methond and got the previous working IOS back on it. Now I am thinking that the flash module is bad. Because the current image is only 8MB and the one im trying to load is 15MB and I have a 16MB flash module. Maybe there is a bad spot in the flash.

Purple

Re: 3620 IOS upgrade problem

Hi Scott,

It does seem to point to the flash. I do have a suggestion, though - now that you've got the router back up, why don't you try to boot off that new image via TFTP. That way, you won't have to copy it to flash, but you do get to verify that the image is okay.

Hope that helps - pls rate the post if it does.

Paresh

Silver

Re: 3620 IOS upgrade problem

Thank you pkhatri,

Can you advise me as to the best way to boot from TFTP? what commands so on?

Thank you again

Purple

Re: 3620 IOS upgrade problem

Firstly, set up a TFTP server on a PC/host that you can get to from the router. To make things easier, ensure that the image is stored on the root of the TFTP filesystem.

Then, enter in the following commands on the router:

boot system tftp:

Save the config and then re-load the router.

The procedure is pretty safe - if the router cannot boot using TFTP for some reason, it will fall back to the image in Flash.

Hope that helps - pls rate the post if it does.

Pareshc

Silver

Re: 3620 IOS upgrade problem

Great!

I already have a TFTP server setup for use with my CCNP studies. And it can reach the TFTP server. The ethernet of the router and the TFTP server are connected to a 2950.

I take it that the boot system tftp command is a global config command? Do I have to setup a ip host statement mapping the word TFTP to the ip of the TFTP Server?

Thanks again

Purple

Re: 3620 IOS upgrade problem

That was a typo. It should read:

boot system tftp ://

e.g boot system tftp 10.1.1.1://

Paresh

Purple

Re: 3620 IOS upgrade problem

On some platforms, I find that you need to specify it as such:

boot system tftp://10.1.1.1/

You'll have to see which one works for you.

Paresh

Purple

Re: 3620 IOS upgrade problem

Sorry for the confusion. I just logged into a 3620 and it requires the following syntax:

boot system tftp

Hopefully that should do it :-)

Paresh

Silver

Re: 3620 IOS upgrade problem

Don't worry, no confusion.

I will try that here in about 30 minutes or so and report back

Thanks again!!

Silver

Re: 3620 IOS upgrade problem

Ok, so far not so good.

Like I said earlier I got 12.3(17a) back on and working great.

then I added boot system tftp and saved the config and reloaded.

When it reload I get bumped back to Rommon 1> mode.

here is a snip from my running and startup config

no service password-encryption

!

hostname BBR1

!

boot-start-marker

boot system tftp c3620-j1s3-mz.123-17b.bin 10.254.0.254

boot-end-marker

!

!

Here is a part of the output of what happenes when I reload the router after the boot command is added.

Smart Init is enabled

smart init is sizing iomem

ID MEMORY_REQ TYPE

000037 0X00056400 Combination Single Ethernet 2 WAN

0X00098670 public buffer pools

0X00211000 public particle pools

TOTAL: 0X002FFA70

If any of the above Memory Requirements are

"UNKNOWN", you may be using an unsupported

configuration or there is a software problem and

system operation may be compromised.

Rounded IOMEM up to: 3Mb.

adjusted iome size up to minimum size of: 0X00400000

Using 6 percent iomem. [4Mb/64Mb]

System Bootstrap, Version 11.1(19)AA, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

Copyright (c) 1998 by cisco Systems, Inc.

C3600 processor with 65536 Kbytes of main memory

Main memory is configured to 32 bit mode with parity disabled

rommon 1 >

Silver

Re: 3620 IOS upgrade problem

Here is my show version also if that helps

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3620-I-M), Version 12.3(17a), RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Mon 12-Dec-05 21:59 by evmiller

Image text-base: 0x60008B00, data-base: 0x60CE6000

ROM: System Bootstrap, Version 11.1(19)AA, EARLY DEPLOYMENT RELEASE SOFTWARE (fc

1)

ROM: 3600 Software (C3620-I-M), Version 12.3(17a), RELEASE SOFTWARE (fc2)

Router uptime is 0 minutes

System returned to ROM by reload

System image file is "flash:c3620-i-mz.123-17a.bin"

cisco 3620 (R4700) processor (revision 0x81) with 61440K/4096K bytes of memory.

Processor board ID 07964447

R4700 CPU at 80MHz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

1 Ethernet/IEEE 802.3 interface(s)

2 Serial network interface(s)

DRAM configuration is 32 bits wide with parity disabled.

29K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Purple

Re: 3620 IOS upgrade problem

Hmm.... do you get any messages about problems getting to the TFTP server ?

Is the TFTP server on a directly connected segment or do you have to route to get to it ?

Paresh

Silver

Re: 3620 IOS upgrade problem

I have all my other devices turned off. All I have on is my PC/TFTP server and the router and they are both plugged into ports on one of my 2950's and are both in VLAN 1. I can ping the TFTP server with the router and vise versa. it loads fine with the 12.3(17a) image. Then when I add the boot system command it boots to the rommon prompt.

Then I have to do

confreg 0x2142 and reload without the config and erase the config and reload to a new empty config and it boots fine back to the 12.3(17a) image

Wierd huh

Purple

Re: 3620 IOS upgrade problem

It's weird alright...

I wonder if you are game to try this thing that I have had to do sometimes:

First, get rid of the boot system command.

Then, configure the following;

boot bootstrap flash:c3620-i-mz.123-17a.bin

boot system tftp c3620-j1s3-mz.123-17b.bin 10.254.0.254

It's worth a shot :-)

Paresh

Silver

Re: 3620 IOS upgrade problem

No go, same result. I guess I will just stick with 12.3(17a) IP until I can get a new flash module.

Re: 3620 IOS upgrade problem

Hi

If you are not able to boot then even from ROMMON mode you can.

(1)I used Solarwinds TFTP server available at www.solarwinds.net.

(2)Click File -->Configure-->Security --> Transmit and Recieve both

(3)You will get a command "rommon 1> tftpdnld"

(4)give IP_ADDRESS=(say)192.168.1.1 and so on

(5) give subnet, gateway, tftp server ip, and tftp file.

(6) then rommon 7>tftpdnld -r

Above will load the image and run it

Try it

Regards

JD

Silver

Re: 3620 IOS upgrade problem

I am already using Solarwinds TFTP server on a PC in my lab and I know I have it enabled to Recieve and Transmit. I have checked that like 10 times.

I will try your idea in the morning and see if that works

Thank you Desai

Scott

Silver

Re: 3620 IOS upgrade problem

According to some docs I found on Cisco's site say that the tftpdlnd command is a feature only available on the 2600 series routers.

Looks like that wont work for my 3620

Re: 3620 IOS upgrade problem

Hi

I am having one 3640 and have faced similar prob like this....It had worked on it.

JD

Re: 3620 IOS upgrade problem

Rename the File name to something else on your tftp server and use that name instead in the router configuration, for example change file c3620-j1s3-mz.123-17b.bin 10.254.0.254 to test.bin.

try this trick and I hope it will work and ensure you have no firewall on the PC/tftp server including WIndowsXP built-in firewall.

Regards

Shaheen

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