[Curlyben]

Here's my problem.
I have an older Cisco 1003 ISDN router setup for one of my software suppliers to access a server on my network.
It only allows access to one IP address, the box they support.
Now I need to change the routing table to allow access to two other IP's for remote desktop connections.
As the ISDN is only routing to one IP it goes directly on to my network, bypassing my firewalls.
Problem is I can't edit the router, so I was looking at replacing it.
I have tried all the user ID's and passwords I know including the cisco default one.
Do I need a specific ISDN router or will any router work as the ISDN connection is RJ45 ?
Or can anyone think of another way of resolving this issue?

[cajalat]

Curlyben,

Some clarification... do you want to replace your router because you can't gain access to it or because it won't route to additional IP's?

Also, the RJ-45 for your ISDN is not an Ethernet connection. It should be the left most connection if you're looking at the router from the back and it should be labeled ISDN/BRI or something like that. It is an ISDN specific connection so if you were to replace it you'll need an ISDN capable router.

Casey

[Curlyben]

Curlyben,

Some clarification....do you want to replace your router because you can't gain access to it or because it won't route to additional IP's?

That's both really.
If I could access it I would add the extra IP's to the routing table.

Also, the RJ-45 for your ISDN is not an Ethernet connection. It should be the left most connection if you're looking at the router from the back and it should be labeled ISDN/BRI or something like that. It is an ISDN specific connection so if you were to replace it you'll need an ISDN capable router.

That makes sense. I had a feeling that this was the case.

[cajalat]

Well I think there's good news for you. I can help you recover your lost password. Also, I can help you add the extra route/ip as well. Lets start with recovering the password. Follow the steps outlined here:

http://www.cisco.com/univercd/cc/td/....htm#wp1001221

Some notes:

Step 1: You'll need a serial connection with a roll-over cable. If you still have the original equipment that came with your router the cable you need is the DB-9 to RJ-45 and most of the time is Blue. You'll then need to use a program like Hyper-Terminal (horrible) or just download Tera-Term Pro (Free) and use that instead.

Step 4: The "Break" key will depend on the program you're using. Check here for reference: http://www.cisco.com/warp/public/701/61.html#topic1

Step 11: Not sure if you'll get prompted for this but if you do make sure to enter 2 and press return.

Step 18: Make sure that your config register is set to 0x2102 (that's the safest in my opinion). Your prompt will look something like this:
Router(config)# config-register 0x2102

Before you get to step 19 you need to make sure that you change your line password as well IF you have one. If you don't have one then skip this step:

Router(config)# line vty 0 4
Router(config-line)# password mylinepassword

Continue with Step 19 through 20

Step 20: You'll need to write config first before you do a reload

Once you've recovered the password we can look at adding your route to your other system.

Casey

[Curlyben]

Cool Thanks Casey.
I even had a search through the Cisco site and completely missed this bit. D'oH

Time to grab my router and a cup of Java and take the plunge.

[Curlyben]

Thanks heaps Casey, worked like a dream.
Now it's time for me to remember all my CCNA stuff ;)

[cajalat]

Cool :) Glad the cisco instructions helped (all I did was find them :)). If you need help with the routing please let me know.

Casey