Comcast Business Support Community

Prefix Delegation w/ CGA4131COM working?

My previous gateway was just swapped out due to connectivity issues, and I can't seem to get prefix delegation working quite right on the new box. I'm running pfsense as my router. I seem to be getting correctly delegated prefixes from the gateway via dhcp6. Digging around with tcpdump I see the C

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Prefix Delegation w/ CGA4131COM working?

My previous gateway was just swapped out due to connectivity issues, and I can't seem to get prefix delegation working quite right on the new box. I'm running pfsense as my router. I seem to be getting correctly delegated prefixes from the gateway via dhcp6. Digging around with tcpdump I see the C

It has been "fixed" but the rotation you describe is a bug I detailed in another 3 part post on how to use these gateways with DHCP-PD

Using my own modem and router with static IPs

I would like to replace this router with my own modem+router but as I understand it, this is not possible because I have static IPs. Please confirm that is the case. I find it rediculous that a business class internet service doesn't have the option to provision static IPs using my own device. Th

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Using my own modem and router with static IPs

I would like to replace this router with my own modem+router but as I understand it, this is not possible because I have static IPs. Please confirm that is the case. I find it rediculous that a business class internet service doesn't have the option to provision static IPs using my own device. Th

Comcast modems work this way: The modem boots and pulls a bootfile off a comcast server. It does this using some low-level communication that has nothing to do with TCPIP. The bootfile configures the modem with it's IP addressing and other

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New Business Gateway CGA4332COM hangs during initial config; replacement does too

Ordered new Comcast Internet service with 5 static IP's. The gateway hung during initial configuration. Support replaced the unit, the new one hung too! This seems like a firmware bug, how do I get competent support? By "hung" I mean the gateway suddenly went to a login prompt, and w

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New Business Gateway CGA4332COM hangs during initial config; replacement does too

Ordered new Comcast Internet service with 5 static IP's. The gateway hung during initial configuration. Support replaced the unit, the new one hung too! This seems like a firmware bug, how do I get competent support? By "hung" I mean the gateway suddenly went to a login prompt, and w

You are running static IPs so you should NOT be using the 10.0.0.x numbers on the Comcast router's lan side. Instead you need to put your own router behind the Comcast router, assign one of your static IPs to it's WAN port, and use whatever private

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Forcing a price increase by removing old plan / Hard pushing router

I have had the same plan with Comcast for Business Internet at basically $100-110 a month for the last 10 years plus. Now they are telling me my plan is being retired and I have to get a new plan. For a minor bump in performance I can pay a 50% price increase. If I want to go beyond that I can

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Forcing a price increase by removing old plan / Hard pushing router

I have had the same plan with Comcast for Business Internet at basically $100-110 a month for the last 10 years plus. Now they are telling me my plan is being retired and I have to get a new plan. For a minor bump in performance I can pay a 50% price increase. If I want to go beyond that I can

Unless you have static IP addresses (do you?) you do not need to use their modem and in fact you really shouldn't be on Comcast Business service anyway unless you are doing voice with them. The reason they are trying to push new gear is to allow the

Continued Degradation and Disconnects

It's been about six months since the issues have started popping up, but it's gotten much much worse since then. I have to reset my comcast business router multiple times a week, sometimes multiple times a day (At minimum, it's reset 6 times a week) because my internet will drop out. I've isolated t

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Continued Degradation and Disconnects

It's been about six months since the issues have started popping up, but it's gotten much much worse since then. I have to reset my comcast business router multiple times a week, sometimes multiple times a day (At minimum, it's reset 6 times a week) because my internet will drop out. I've isolated t

I have used Comcast for almost 2 decades. There are 3 possible causes to your problem: 1) Power adapter on modem beginning to fail or other internal modem hardware beginning to break down. 2) Inadequate number of downstream channels assigned