Cisco 800 series 3 subnets 2

[736xl]

I've been out of the cisco world for some time. I am trying to get back in. I am faced with a problem. 4 routers 851s and each on their own subnet. I need to figure out how to make them talk to comcast box as well as themselves. I'd like to have 192.168.10.x first tier, and 1.x, 2.x, 3.x the last. I would greatly appreciate any info.

Thanks

 

[brianinms]

I am trying to figure out what you are trying to accomplish.

 

[736xl]

I am just as puzzled as you are. However, my client wanted this way and this way only. There are a few devices that need to be segmented from the rest but I didn't see a reason for so many subnets. What I need is 192.168.10.1 to be the main router. To this router I need to have all the other routers plugged in (192.168.1.x, 2.x, and 3.x) into the fastethernet ports. The 10.x needs to be able to talk to the comcast cable box (dynamicaly). All routers need to be able to talk to each other as well. I need to be able to ping anything from any router.

Thanks for your help. Hope this is a bit better.

 

[brianinms]

You won't be able to ping all devices as you will have to use nat with that setup. This makes no sense whatsoever. There is a saying I have .... The client isnt always right.

 

[burtsbees]

Is this all in the same building??? If they want to talk to eachother, why be on separate networks in the first place??? I would be asking the client what the hell they're trying to accomplish!

Burt

 

[736xl]

There are a few devices that for some reason the manufacturer recommends to be on a separate network or Vlan. But yes, even with this there should be no reason for so many subnets. Everything is on one building. My guess that they've talked to other people before and was told that this is the best solution. But one missing fact is that these devices need to talk to each other.
In any case I am going to put everything on one subnet.

One other question I have is, i've gone though the web interface option to configure the router. I didn't see an option to setup a VPN tunnel. Is it possible with the Cisco 851?

I'll give you both stars. thanks

Thanks for both of your help.

 

[burtsbees]

I'm not 100% sure, but I think you can---post a sh ver, or follow this link and enter the IOS image name that is on the router---the link I will post will show you what all that IOS on that router will do...you can get to the IOS name like so through a console session, or telnet...

router>en
router#sh ver

Here's the link, or if you don't know which the IOS name is, just post it and I will copy/paste all the features of that IOS. Now the link if you want to do it...

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

Burt

 

[brianinms]

Just a heads up, the 851 is a soho router and is meant for less than 5 devices. If there are going to be 50 devices I would recommend and 1811.

 

[burtsbees]

Good point, brian.

Burt

 

[736xl]

Again thanks for everyone's help. I am going to have about 50 devices however, none will access the web. There are only talking internaly. Yes, maybe 5 will be going out. Would the 851 still do the job? Originally it was a linksys.

I also have a few spacific ports I have to forward internally from the outside. I've done this in the past a while back. It was a nitemare.

I will have one shortly to get some more hands on. I will post the version. Would very much like to know if VPN is possible. I've manual say it does. But couldn't find a way to create a user. I was hoping not to use the admin account as it will have to be given to a few trades.

Thanks again for all your help.

 

[brianinms]

You should ditch the 800 and get an ASA 5505 and put everything on a flat network.