[SOLVED] Netgear C7100V computer IP questions

[lanline]

Am I not able to change my computer's IP address with this router? It's a router/modem combo, but when I try to mess with the router settings or restart the moden and then check my IP I don't see it giving me a new one. I still have the same computer IP.

My old Netgear router (WNDR3400) would just let me change the last letter of the MAC address for a new IP, while the C7100V isn't letting me get a new one at all.

Has anyone had experience with this router and modem combo?

 

[kanewolf]

Am I not able to change my computer's IP address with this router? It's a router/modem combo, but when I try to mess with the router settings or restart the moden and then check my IP I don't see it giving me a new one. I still have the same computer IP.

My old Netgear router (WNDR3400) would just let me change the last letter of the MAC address for a new IP, while the C7100V isn't letting me get a new one at all.

Has anyone had experience with this router and modem combo?

You are trying to change the public IP address provided by your ISP. You aren't changing your computer's IP address. Since it is a modem and router combo, your ISP could have locked the firmware down since usually the MAC address is tracked by the ISP. They don't want you messing with it.

 

[lanline]

You are trying to change the public IP address provided by your ISP. You aren't changing your computer's IP address. Since it is a modem and router combo, your ISP could have locked the firmware down since usually the MAC address is tracked by the ISP. They don't want you messing with it.

How was I able to change my IP constantly with the old router then? I bought this router, so it's not a rental.

 

[lanline]

I just want my dynamic IP back.

 

[kanewolf]

I just want my dynamic IP back.

You probably have a dynamic IP. There is no requirement to support MAC spoofing. If you want more flexibility, then you should have bought a separate modem and router. Limitations like this is why I don't recommend combo units.

 

[bill001g]

Your old connection must have had a cable modem also. In the old connection the modem had a mac address and the router had a mac address. You could change the router mac independently of the modem. In your new connection the modem and router share the same mac address.

The modem mac address is used to identify valid customers to the ISP. If you were to somehow change it your modem would no longer be on the list of valid devices and you would lose service.

In many ways you are lucky that changing the mac address of the router worked to change the IP. Many cable ISP assign the IP address to the modem mac address. The modem then assigns that IP to whatever mac is connected. The only way to get the IP to change was to leave the modem turned off for a number of hours.

The ISP does not want you constantly changing your IP. It causes issues for their system and you have idiots who will get large lists of IP banned from popular sites. So people that did nothing wrong get the IP and have issues.

If you want to change your IP a lot get a VPN service and you can change it at will.

 

[lanline]

You probably have a dynamic IP. There is no requirement to support MAC spoofing. If you want more flexibility, then you should have bought a separate modem and router. Limitations like this is why I don't recommend combo units.

Unfortunately, I live with my parents who refuse to cut the landline and we were due for an upgrade which is how I ended up buying this modem/router since it was the only one that would let us utilize our internet speed.

I had a similar experience when Comcast trying to force this rental model/routert combo onto us severeal years ago, but I binned it when I learned I couldn't mess around with the router settings or change my IP like my old one can.

I guess I'm gonna have to buy another router. Great.

 

[lanline]

You probably have a dynamic IP. There is no requirement to support MAC spoofing. If you want more flexibility, then you should have bought a separate modem and router. Limitations like this is why I don't recommend combo units.

My router says I do, however, whenever I try to leave it off for a long period of time I end up with the same IP unless there's any other way to change the computer's IP, I wouldn't know. Like I've mentioned in the OP my old method would always be changing the MAC address.

 

[bill001g]

Unfortunately, I live with my parents who refuse to cut the landline and we were due for an upgrade which is how I ended up buying this modem/router since it was the only one that would let us utilize our internet speed.

I had a similar experience when Comcast trying to force this rental model/routert combo onto us severeal years ago, but I binned it when I learned I couldn't mess around with the router settings or change my IP like my old one can.

I guess I'm gonna have to buy another router. Great.

You likely are stuck if there is a telephone line involved.

It is going to be very hard to find a device that supports voice but is a modem only. Almost every device you will find has the router function in it also. Maybe you can put the device in bridge mode but from what I have seen the ISP does not allow this. Not sure if there is a technical reason related to the voice ports or what.

You are likely better off dropping the voice line form the ISP and going with some form of VoIP solution. Magic jack was one of the well known ones but there are many.

Then again if you constantly change the IP it will cause interruptions for the VoIP equipment.

This sounds like too much work, just do it the easy way and subscribe to a VPN service.

 

[lanline]

You likely are stuck if there is a telephone line involved.

It is going to be very hard to find a device that supports voice but is a modem only. Almost every device you will find has the router function in it also. Maybe you can put the device in bridge mode but from what I have seen the ISP does not allow this. Not sure if there is a technical reason related to the voice ports or what.

You are likely better off dropping the voice line form the ISP and going with some form of VoIP solution. Magic jack was one of the well known ones but there are many.

Then again if you constantly change the IP it will cause interruptions for the VoIP equipment.

This sounds like too much work, just do it the easy way and subscribe to a VPN service.

Yeah, that was one of the first things I noticed was the catalog being extremely thin for these combos. And like I said, I already had a bad experience with them years ago when Comcast tried forcing us to use one.

I tried the VoIP route but my folks are incredibly stubborn.

Oh well, thanks for the help.

 

[kanewolf]

Yeah, that was one of the first things I noticed was the catalog being extremely thin for these combos. And like I said, I already had a bad experience with them years ago when Comcast tried forcing us to use one.

I tried the VoIP route but my folks are incredibly stubborn.

Oh well, thanks for the help.

You already have VOIP, it is just bundled with the ISP. What @bill001g is recommending is getting a separate voice provider. I use OOMA. That allows you to separate the voice line from the router. Another separation from the all-in-one unit that you have.