Need help configuring a bare 1720

I bought a 1720 router off of eBay, but I later found that the guy I bought it from completed wiped everything off of the device. Since there's no pre-existing image on the router that I can upgrade, I'm not sure what to do. I have an IOS image ready to go, but I'm not sure what I need to do to get it loaded on the router. Any thoughts on this would be appreciated.

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notgoing2fail

What do you mean he wiped everything out? Are you saying there's no image at all or just that there's no configs from the startup config?

It's good that he wiped it out for you so you can start fresh, but did he actually delete the image?

Synthros

Correct -- there is no image at all

kalebksp

Here are some instructions for loading a IOS from rommon using tftpdnld: How to Download a Software Image to a Cisco 2600 via TFTP Using the tftpdnld ROMMON Command - Cisco Systems

They say 2600 but they should work for 1720s as well.

notgoing2fail

Synthros wrote: »

Correct -- there is no image at all

Ok so you end up in ROMMON mode?

All you have to do is use the commands in rommon to configure your TFTP server and your bin file.

Then just copy it over to your flash and reload...

blackninja

Get yourself a program installed called: tftpd32. TFTP server

Run program and set up with an IP address of: 192.168.0.10 & set the directory for TFTP server. Then put the IOS image in this directory.

Set your computers Ethernet port to 192.168.0.10 255.255.255.0
& DG 192.168.0.254

Attach crossover cable from computer Ethernet port to router.

OR

Attach straight through cable to a switch from computer, then straight through cable from switch to router.

from ROMMON in router run:

IP_ADDRESS=192.168.0.1
IP_SUBNET_MASK=255.255.255.0
DEFAULT_GATEWAY=192.168.0.254
TFTP_SERVER=192.168.0.10
TFTP_FILE=type exactly what the image name is.bin

Then run command:

tftpdnld

then press:

y

NOTES:

If you make a mistake typing in ROMMON, don't finish or backspace just press enter and start again. It is soooo finicky.

I'm glad you have to this, as you don't get to do this with PT or GNS3 - enjoy.

notgoing2fail

blackninja wrote: »

I'm glad you have to this, as you don't get to do this with PT or GNS3 - enjoy.

Exactly. I went through this process just a couple weeks ago.

And last weekend I had to use Xmodem. It's all a great learning process....

I'm in the process of upgrading my SDM right now which I will create a new thread cause I want to make sure I don't mess things up....

DPG

How long does it take to upload an image to flash using this method?

notgoing2fail

DPG wrote: »

How long does it take to upload an image to flash using this method?

Which method? TFTP or XMODEM?

TFTP it's pretty fast, you're talking about 10 mins or so, depending on the size of the image.

With Xmodem it's MUCH slower, you're talking about 2 hours?

Because you're sending data at 9600 baud rate. You can increase that to 115000 but you're still talking a good hour or so....and if you have a huge image, it will be quite awhile....

shaycorl

ou can view the ROMmon environment variables by using the command, as
rommon 3 > set
PS1=rommon ! >
IP_ADDRESS=172.18.16.76
IP_SUBNET_MASK=255.255.255.192
DEFAULT_GATEWAY=172.18.16.65
TFTP_SERVER=172.18.16.2
TFTP_FILE=quake/rel22_Jan_16/c2600-i-mz

That might help you troubleshooting your problem. Cheerz

mikem2te

notgoing2fail wrote: »

Which method? TFTP or XMODEM?

TFTP it's pretty fast, you're talking about 10 mins or so, depending on the size of the image.

With Xmodem it's MUCH slower, you're talking about 2 hours?

Because you're sending data at 9600 baud rate. You can increase that to 115000 but you're still talking a good hour or so....and if you have a huge image, it will be quite awhile....

I have resorted to xmodem in the past because of some issues with TFTP and yes, it took ages. Fortunately I had a really old small IOS image I put on with xmodem to get the router up and running.

Once it was running an IOS I used FTP to put the 'real' IOS on.

notgoing2fail

mikem2te wrote: »

I have resorted to xmodem in the past because of some issues with TFTP and yes, it took ages. Fortunately I had a really old small IOS image I put on with xmodem to get the router up and running.

Once it was running an IOS I used FTP to put the 'real' IOS on.

oh that is an EXCELLENT tip!!!