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Forum Discussion
C7000 Can not change LAN IP to 192.168.100.___
Hey All, So, I bought this REALLY nice C7000 Nighthawk cable modem router and I want to use it instead of the old cheap Comcast cable modem here. I have "upgraded" dozens and dozens of the ch...
it is NOT a flaw. It is by design.
It is as per DOCSIS specification. Please review if you have time.
you have so many private subnets (as per RFC1918) to use and I am not sure why you are just stuck with 192.168.100.x. Also every "Cable Modem Router" should have the same design as well. you can purchase a non-NTGR modem and report back here if you see different behaviour.
**FROM DOCSIS 3.0 OSSI Spec**
The CM MUST support 192.168.100.1, as the well-known diagnostic IP address accessible only from the CMCI interfaces. The CM MUST support the well-known diagnostic IP address, 192.168.100.1, on all physical interfaces associated with the CMCI. **** you can download the specification from CableLabs website. It is free.
you could cross-reference this post on the DSLReports Forum where lot of esteemed Cable Community members post and they can provide you further details as well (https://www.dslreports.com/forum/comcast)
I am not going to waste any more of my valuable time on this issue that turns out to be because of a poorly designed Netgear cable modem/router!
If this is so widely known as you are trying to say....... why didn’t several Netgear employees .... so called “experts” know about it? I submitted a support request to Netgear about this issue and at least SIX different “experts” tried to solve it BEFORE bumping it up to the next level of support.
As I mentioned in my previous reply I sold this unused Netgear C7000 on Craigslist for just a small loss.
AND ....I was able to purchase and use an Actiontec (sorry I mistakenly said it was a Linksys brand earlier) Cable modem router and I had NO TROUBLE setting it’s internal IP address to 192.168.100.254
I forget exactly what model Actiontec I purchased but I will get it the next time I am at this business and try to post it here.
I support hundreds of residential customers and dozens of small businesses here in the Portland, Oregon area...... and (as I mentioned previously) it is a common practice for businesses to use the first three octet’s of 192.168.100.xxx for there network devices AND to set up all there devices with static IP addresses.
I am certainly NOT going to change the static IP addresses on well over FIFTY network devices because Netgear has made a poor decision to block off all of the addresses where the first three octet’s are 192.168.100.xxx
I am VERY disappointed with Netgear right now and I am going to reconsider what brand network devices I purchase AND recommend to my customers going forward!
sure. Please post a model of the "actiontec" "Cable Modem Router" which you purchased. We would be happy to check it.
as far I know, I have not seen actiontec manufacturing "Cable Modem Router" devices. It is not on their website (https://www.actiontec.com/wifi-routers-gateways/).