UPDATE: For clearer instructions, please visit this article!
My room-mates just upgraded to Shaw’s Broadband 100 plan. Included with it is the requirement that you use a Cisco DPC3825 hybrid modem/router. What they don’t tell you though is that the firmware on this box is yet another case of half-baked Linksys firmware. The box doesn’t allow for DLNA or Bonjour traffic over the LAN. Best of all, the SPI firewall blocks tv.adobe.com for some reason.
A few forums have said that by calling Shaw directly and asking them to escalate the issue you can get them to swap the firmware on the DPC3825 for a “bridged” mode so that you can use a standard router with it and avoid the issues that they don’t mention.
Now, if you don’t have the time or desire to fight your way through bureaucratic hoops, you can always check out the step-by-step guide I’ve put together here.
Thanks for this post. I have almost the same problem. However, I have problems with your instructions.
1. I wasn’t able to use 192.168.100.1 so I used 192.168.10.1
2. On my router, I used 192.168.10.5 as static IP for the internet connection.
3. I am not sure which one the external IP is? 192.168.10.5?
Also, I have to enter a subnet mask, a gateway and DNS 1 + 2. What should I enter here?
Any help is appreciated, thanks!
Hi Bernhard, thanks for posting!
I used 192.168.10.x as well, 100 was a figurative example.
Your true router’s Internet (also known as WAN or Wide Area Network) IP should be the 192.168.10.5 with a subnet mask of 255.255.255.0
Your DNS settings can be found on the Cisco Modem/Router’s own status page for your Internet service provider. The gateway is the internal address that the Cisco box uses, so if you have changed it to 192.168.10.1, then that is the gateway you will use on your true router.
Let me know if that clears things up for you!
Sweet! Thanks so much for your help, this cleared everything and I am able to use my old router again
You’re welcome! Glad to hear that fixed it!
I recently subscribed to Shaw Broadband 100, and sure enough after a bunch of troubleshooting for the cause of DNS problems I was having, I decided to disable the SPI Firewall …
It’s incredible how this changed my internet experience. Considering your blog came up after searching for Cisco DPC3825 SPI firewall, I’m including my 2cents here so others my save some hair.
Shaw technical support hasn’t been able to nail this issue for me, and so it was obviously left up to myself if i want to fix the problem.
No more random disconnects now, no more bullshit connectivity issues, finally a good web experience.
I’m pretty sure that their technical support doesn’t have direct access to sample hardware or an actual proper listing of symptoms and solutions. The worst part is that they continue to offer these devices with features that are as best aptly described as ‘half-baked’ as selling features is extremely disappointing.
I have little doubt though the inclusion of using the hacked together router features is a marketing decision rather than an engineering one. The up-side is though that the unit as a modem is solid and the only issue I’ve encountered so far was when Shaw itself went down this afternoon.
Thanks for posting TeknoWarrior!
Where should i put steps 1 and 2 on my router’s setup page? under what tab
On step 2: is this on my “old router(DIR-628)” setup?
so i will connect my Ethernet cable on dpc3825 “slot 1″ then connect the end on my old router on “internet slot”. On my old router(DIR-628), i am going to connect the ethernet cable on “LAN 1″ going to my PC. Am i doing it right?
P.S
english is my second language.
Thanks in Advance!
Hi cluelessjoo and welcome to the site!
For more clear instructions, please see my latest blog post here. Please let me know if you need any further clarification!
wow! that was a fast reply. will look into it
Thanks T.