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cisco 836 running non dsl\isdn broadband connection 1

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garymac777

Technical User
May 8, 2008
5
IE
hi
im new to cisco as you can probably tell from this request..however my mission is slightly complex...probably impossible..

my home broadband comes in via radio and my static ip just sits om my pc or firewall,with no authentication.

i have put the static ip and mask on the bri0 interface of the 836(i know this is an isdn interface,im just seeing if it will work?)
and i have put a private ip (192.168.1.10) on the fast ethernet1 interface.
i have also created an standard access list to allow any traffic from the 192.168.1.0/24 network out the bri0 interface..

im not sure if this will work though cos my broadband isnt isdn!

is there any way of getting this working on an 836 router?

can i configure 2 of the fastethernet interfaces instead and try and have a nat running between them?or a route directing all the traffic out?

i could then shutdown all the other interfaces.

am i wasting my time

thanks again!

Gary
 
Gary,

How does it come into your network now ? You said radio? Is it wireless to the Ethernet nic in your computer? If so the bri0 port is not going to work - like you said your broadband is not ISDN!!

I just did a quick lookup at Cisco on the 836 router and it is designed to do your WAN with ISDN and then you have the 4 port Fast Ethernet switch.

If you are worried about the signal going straight to your PC - you can setup an old PC with 2 nics and run IPCOP - - it is a FREE Linux firewall/router that uses an older dedicated PC with 2,3 or 4 Nics! Then you can feed the signal to the firewall router and then to your PC or even your PC on one LAN and a DMZ on another :) .

Not a lot you can do with the 836 without ISDN or another 836 and an ISDN sim!

Hope this helps!

E.A. Broda
CCNA, CCDA, CCAI, Network +
 
hi thanks for the reply,
(i apologies ive ended posting this in 2 locations)
just to give you some more detail,there is no modem.

the 836 is a dsl,and isdn backup router.

it has a rj11 dsl interface,and an isdn rj45 backup interface.
it also has 4 ethernet rj45 ports

my broadband comes in via a radio mast on my roof,it then goes into an alvaron radio reciever.all you do then is put the public ip,mask and gateway on your pc and off you go ,you have internet.there is no bridge\routed mode involved.

what im wondering is,if i put the public ip on one of the ethernet interfaces,connecting directly to my broadband.
can i then put a private ip on one of the other ethernet rj45 interfaces and connect my lan to this and route my broadband that way?

like a nat from one rj45(public ip)port to the other rj45(lan ip) port

i would then disable\shut the rj11 and isdn ports all together.

could i do it via a type of vlan?or route?its only ip traffic after all..or does the 836 insist that the wan connection come in from one of the specific wan ports(dsl\isdn)

i already have a firewall which im not using in this scenario.its just to see if i can actually do this?and to become more familiar with cisco.

thanks again for everyones help

regards

Gary
 
Gary,

As we have answed on the other post - does not look good unless that 4 port switch lets you do VLANs - if not you will need a 851, 871, 2611, 2621, 2651, 2691, 2611XM, 2621XM, 2651XM etc.

Cisco has a lot out there that can do it and on eBay you should be able to pick one up for less then $200 - I just got several for less then $200 each.

Hope this helps!


E.A. Broda
CCNA, CCDA, CCAI, Network +
 
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