DPC3941t Gateway - Port Mapping

After swapping out my TC8305 gateway for the DPC3941t yesterday, I changed the local IP configuration from 10.0.0.1 to 192.168.1.1, as my home network is configured that way.  My NAS and security cameras did not reconnect, and I did a hard reset on them and reinstalled with their setup files.  After the first one was installed and working properly, and I was able to access it, I tried to access the gateway home page and it was blocked.  I restarted it and was then able to log in.  I installed the second camera and the same thing happened.  The event log showed 88 entries of port mapping and port deletion.  I was told by tech support last night to hard reset the gateway and start all over.  I did the reset and am back at 10.0.0.1, with my NAS and cameras unreachable.  The NAS and cameras worked fine on the TC8305, and the TC8305 worked fine until the last upgrade.   They scheduled a technician to come back tomorrow but they don't do router configuration, only swap one out for another.  Is there any fix for this other than my going out and buying a separate modem and router?  Thank you for any enlightenment out there.  Kat.

JayInAlg wrote:
My personal recomendation is to your your own high end router so you are in complete control of your network settings and port forwarding.  If you don't have Comcast digital voice phone service, then you certainly can purchase your own modem also.  If you do have CDV, then get the gateway place in bridge mode and connect your own router to LAN port 1. You will always be fighting this situation if you keep Comcast's gateway, which is deigned for basic internet funtions.I tried to work with the Comcast equipment due to my history of buying modems and routers that quit working shortly after their 1 year warranty expired.  For the last 7 years, when a modem quit working, I called Comcast and they brought me a new one.  I upgraded routers several times, never spending too much on one.  I had the TC8305c gateway for the past 2 years and never had a problem with it until last month.  However, now it is time to go back to the two box system.  You are absolutely right. I bought an Arris/Motorola SB6183 modem and a Netgear WNDR4500 router yesterday.  Due to Murphy's Law, I did the setup backwards.  First, I put the gateway in bridge mode.  Then set up the router.  Then I disconnected the gateway and connected the modem to the coax, and ethernet to my computer.  Did the activation through the browser, shut down the modem, connected the router and powered up both boxes.  Everything is working fine.  The NAS and the security cameras came back online without any reconfiguring.  The guest network is on. Everyone is happy.  Took less than an hour. Thank you for pointing this out to me.  I hope the modem and router last longer than the 90 day warranty.  I bought the protection plan, although they won't bring me a new one like Comcast did.  Wish me luck.   Kathy 

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    Message was edited by: dalyboy

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