Comcast Business Support Community

Connectivity Issue 11/6

We are aware that some Comcast Business customers are experiencing connectivity issues with their Comcast Services. Our Engineers are engaged and actively working to resolve the issue. We apologize for the inconvenience and we appreciate your patience while we work to resolve this issue. I will

Is Comcast aware of and working on outages? I'm in Fresno CA area have my business, customer's businesses and my home connection all extremely spotty. Pages will start to load then take 10 minutes or more before displaying anything. Sometimes not loa

Any Way to Have DHCP for IPv4 Disabled in XB3 Router?

Option is missing to disabled DHCP for IPv4 on a XB3 router. Any way of doing this without putting into bridge mode? I don't mind using the xfinity as a gateway but have Windows domain controller that handles DHCP & DNS. Really dissapointed in Comcast. I guess they are going the way of UVerse in not

Hi, thanks for the reply, but we ended up just setting static DNS entries on all their workstations. It's a pain to have to do that but we were on-site out of town and had to get it working then. Just so I know in the future though, is there any way

Any Way to Have DHCP for IPv4 Disabled in XB3 Router?

Option is missing to disabled DHCP for IPv4 on a XB3 router. Any way of doing this without putting into bridge mode? I don't mind using the xfinity as a gateway but have Windows domain controller that handles DHCP & DNS. Really dissapointed in Comcast. I guess they are going the way of UVerse in not

It is a business but maybe they signed up for a residential account, I don't know. This is a customer of mine.

Any Way to Have DHCP for IPv4 Disabled in XB3 Router?

Option is missing to disabled DHCP for IPv4 on a XB3 router. Any way of doing this without putting into bridge mode? I don't mind using the xfinity as a gateway but have Windows domain controller that handles DHCP & DNS. Really dissapointed in Comcast. I guess they are going the way of UVerse in not

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Frequent Outages Since Friday

I was wondering if any of the support moderators can look into problems in a specific area and tell me if they have been resolved permanently or when they will be resolved. Started having issues off and on with quality of service last week. Friday we went down for about a half hour. Was also down al

Outages everyday for 1/2hr up to two hours. Any moderators care to look into this? I can provide account number and/or case numbers. All I get from Comcast support line is it's an area outage and technicians are working on it. What kind of area outag

Frequent Outages Since Friday

I was wondering if any of the support moderators can look into problems in a specific area and tell me if they have been resolved permanently or when they will be resolved. Started having issues off and on with quality of service last week. Friday we went down for about a half hour. Was also down al

Down again. Getting ridiculous. Called support again. All they say is outage in the area being worked on and service should be restored within a few hours but that is the exact same things we were told Saturday.

Frequent Outages Since Friday

I was wondering if any of the support moderators can look into problems in a specific area and tell me if they have been resolved permanently or when they will be resolved. Started having issues off and on with quality of service last week. Friday we went down for about a half hour. Was also down al

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VoIP Jitter & Packet Loss

For the last two days we have been experiencing some random periods of serious jitter and minor packet loss with our VoIP trunking (not Comcast) on our business cable service. Bandwidth has actually remained pretty good and signals all look good in gateway. Mostly happening in the morning. We are in

Problem has cleared up a little but still having periods of high jitter. Any input from Comcast moderators? Just the thought of having to try to explain the meaning of jitter to someone on support line gives me a headache. What are some thoughts on a

VOIP Delay...traffic marking for Qos?

We use a VOIP phone system from Mitel called MiCloud. Since day one, August of 2014, the delay we experience on phone calls has been awful. I have set up Qos settings on my router but it has not made a difference. Mitel has asked me to check with Comcast to see if they can "mark" traffic for us in o

If your Comcast modem is in passthrough mode and you are using your own router, it sounds like you are already setup how Comcast_John was recommending. If you are not in passthrough mode and are using double NAT, that would be the first thing to corr

VoIP Jitter & Packet Loss

For the last two days we have been experiencing some random periods of serious jitter and minor packet loss with our VoIP trunking (not Comcast) on our business cable service. Bandwidth has actually remained pretty good and signals all look good in gateway. Mostly happening in the morning. We are in

Fresno, usually considered part of Northern CA, I prefer to say central CA as we are almost dead center of the state. So far today things look clean. Got real bad between 9am-10am yesterday so I'm keeping an eye on it. Have VoIP tester from my ITSP r