3620 boot from tftp

I have a 3620 with 64M RAM and 8M Flash.

Since I want to boot from a IOS with file size 10M. So I want to boot it
from tftp by

boot system tftp c3620-xxxx.bin 10.x.x.x

However, I find the router never connect to my tftp server using udp.

I double check my tftp server is working fine and the file location is okay.

I also try it on rommon but I can't have it work.

Did I miss anything?

 

Can you ping the tftp server? Do you have FW program running on your
PC?


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hsb

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The tftp server and the router is in same LAN segment and I tested the tftp
server / the IOS images / copy procedure of router / actually copy other
smaller file are okay.

 

What tftp server are you using? Cisco's? Ditch it. Get something else
like 3CDaemon, solarwinds, or kiwi.

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hsb

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I use linux Redhat 9 that I try to download IOS image without any problem.

 

Then rule out cabling issues. I can't think of anything beyond that.

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hsb

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Does the ROM support the type of interface your tftp server is behind?

The IOS in ROM is what is used to tftp-load the 'real' image, and all
interfaces that were designed later are just not there when running from
ROM....

--maarten

 

The ROM version is :

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE
SOFTWARE ()

As far as I remember, there is no command under rommon relate to tftpdln or
network interface. Do I need to upgrade the Bootstrap or what should I do to
make my router tftp bootable.

 

The only way to boot a 3600 series router from a TFTP server is to have
an IOS in flash that will recognize the interface connected to the TFTP
server and use a boot system tftp statement. At reload, the router will
first load the IOS located in flash, recognize the interface, and then
look for the file specified at the address specified in the boot system
tftp statement. Once that file is found on the TFTP server, it will load
it into RAM.
If you don't have an IOS in flash, you'll have to use xmodem.

 

how could I know that IOS image c3620-jk2o3s-mz.121-22.bin can be run from
RAM?

 

I got two error message from my router that they have a bootable IOS.

%SYS-6-READ_BOOTFILE_FAIL: tftp://192.168.3.220/c3620-jk2o3s-mz.121-22.bin
File.

%SYS-6-BOOT_MESSAGES: Messages above this line are from the boot loader.

and I am very sure the file is in a right location that I can use tftp to
download.

Also, my boot system is

boot system tftp c3620-jk2o3s-mz.121-22.bin 192.168.3.220

What I did wrongly.

 

The boot system tftp statement looks correct. I would check these things:
Can you ping the 192.168.3.220 address from the router while running the
current IOS?
Is the TFTP server up and running?
Is the file in the root directory of the TFTP server?
Is the filename spelled exactly correct (it's case sensitive)
Is there enough RAM in the router to support the
c3620-jk2o3s-mz.121-22.bin image? (It requires a minimum of 48 MB of RAM)

 

The ip is okay,
the ping is okay,
current IOS can boot,
tftp is up becuase I can copy other IOS file to same router,
I double check and double check againt he spelling of all wording and
the router has 64M RAM + 8M Flash.

 

Is the tftp server machine connected directly to the router? If not, try
connecting it directly to see if that makes a difference. Maybe there's
an issue getting to the server on time at bootup.
Also, on the filename thing - I've seen cases where an extra ..bin is
appended to the file when downloaded with IE. You might want to rename
it just to be sure.
The only other thing I can think of is the iomem setting, if not enough
is allocated to processor memory to boot the larger image. Let me know
if any of this helps.

 

You're using the Fa0/0 interface?


--

hsb

"Somehow I imagined this experience would be more rewarding" Calvin
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I setup a sniffer on the ethernet port on the tftp server which suppose tftp
traffic should appear.

I saw alot of packets passing through when coping IOS image from the tftp
server but none when boot the router from tftp.