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This has been my experience so far with ipv6 on these different business class modemsSMC D3GCCR - modem doesn't route the sub-prefix delegation correctly breaking ipv6 connectivityCisco DPC3939B - ipv6 works properly for directly attached computers b
Dual-Stack on SMC D3GCCR and Cisco DPC3939B
Dual-Stack have been enabled on both the SMC D3G CCR and the Cisco DPC3939B.. If you dont have dual-stack reboot your device and the bootfile will enable it..
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Hi there, user_fc3678! Congratulations on the new modem! That is always nice to have! We only offer the 1 type of backup battery that we recommend having in the Comcast Business modem. The user manuals for the Comcast Business modems do not show if i
Gateway AC power input: 240V-tolerant?
Good day, Comcast's field tech just finished replacing our gateway, and porting our primary phone line over to it. With that said, I trust the "backup" battery in the new gateway about as far as I can throw my minivan. With this in mind: I'd like to power the gateway from our in-house battery plant,
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Part #1 of 3 Guide to copper business static IPv6 setup from Comcast and DHCP-PD on the Comcast CBR-T.
Overview This guide is the result of my work integrating the CBR-T (Technicolor CGA4131 version 1) into my IPv6 network in October 2021. This modem was running firmware version CGA4131COM_4.10p10s1_PROD_sey for the Software Image Name and Prod_20.2_d31 & MTA Application for the eMTA & DOCSIS Softwar
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IPV6
This is ridiculous
Knowing IPV6 is available, it won't configure correctly through the SMC modem, requires switching to the Netgear to take advantage. In doing this, now my business phone lines are DOWN. I use the phone services I have chosen for specific reason and options that comcast doesn't provide, nor is the com
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Connectivity
I was able to resolve this on my own, through this forum and other search engines. I have found very little documentation regarding Comcast's configuration and required settings for IPv6 and all of the customer service agents (CSA) I spoke to had no
Dual Stack on customer owned modem?
I have a Comcast Business account using my own modem and a standard issue dynamic address (too cheap to pay for a static address). My modem is a Cisco branded DPC3008 docsis 3.0 modem, connected to a NetGate PFSence firewall. I have found very little documentation on the the proper confiuration for
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My New Arris SURF(brick)board
Dear Comcast, I decided it would be nice to upgrade my cable modem. Firing up Google search I typed "comcast supported modems" That brought me to here which took me to here. Unfortunately, when I talked with support that's when the sad news came, the Arris SBG6782-AC "supported" SURFboard modem is a
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Domain Names/Static IP
unfortunately, there's not much you can do. Static IPs cannot be provisioned to customer owned modems; you must lease a Comcast gateway for that. As far as I've known, the gateways should do no modifying of traffic to/from static IP assigned devices.
True Bridge Mode on DPC3939B for comcast business
I have a newly installed 150MBit comcast business service with 5 static IPs which came with a DPC3939B router. We are having problems with the device changing TCP options on our traffic and need to get the device into true bridge mode. I contact support and was told that the DPC3939B did not have a
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Accepted Solution
Hi elchupicabra. Welcome to the Business Forum Community. I apologize for mis-information that you were given. For Small Business accounts, Comcast does not allow the configuration of fixed Static IP addresses onto non Comcast equipment. Currentl
Update: Static IP's with customer-owned modems/gateways
Good day, fellow victi.. uhh, 'users' of Comcast! I thought I'd post an update regarding the issue of not being permitted to use static IP's with a customer-owned modem/gateway. What I found out is, I think, likely to raise eyebrows (and, possibly blood pressure levels) other than mine. For those wh
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@Comcast_Ray I think part of the frustration is from this being at least the third firmware update that has broken IPv6 in a way that can't be worked around by the customer. And we as customers are just stuck every time this happens. If we had
Prefix Delegation Disabled
Is anyone else having issues with their delegated IPv6 prefix? Our CGA4332COM correctly shows our assigned /56 address but it is not handing out the /59 prefix to our router-firewall. This seems to have started this week so I suspect this is caused by a recent firmware update. Tier 1 support refused
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Sales rep says that Dynamic IPv6 Static is available as of beginning of October
My sales rep said that IPv6 is available with dynamic IPv6 and static IPv4 as of 10/7/2014 on SMC D3G modems. I phoned tech support this evening, who told me that the modem has IPv6 on the network side but not on the customer side and that he didn't think that Comcast did IPv6 on the customer side a
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IPV6
@tmittelstaedt wrote: I think you should PM comcast_tuska and ask him to address all of this here in this thread. Good idea: PM sent and copied here. Request for weekly or bi-monthly updates on IPV6 PD issues From: @und
IPV6 Prefix Delegation on Comcast-Provided Modems
Can we keep a running status in this thread of (Business service) Comcast-provided modem (by model) prefix delegation conformity? I have several client locations in Chicago and suburbs with Comcast Business service and IPV4 fixed addresses. Every client I support has a firewall/router behind a Comca
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I gave up long ago on Comcast supplied gear for v4 statics with v6, leave it in place and ignore it
Save yourself the pain ! Simple solution, a pfSense firewall, tunnel IPv6 (6in4) to Hurricane, use the many DNS resolver tricks to strip AAAAs from its (pF) local resolver (dnsmasq) to return only IPv4 A records for certain domains to avoid (Netflix et al) tunnel block issues and I am a happy camper
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IPV6
When we did the test with both modems, our network was connected to the SMC. The Cisco had nothing connected (save power and coax from Comcast). So, yes, it was clearly not our network that was triggering the reboot. I cannot speak to the packages th
Modem randomly reboots
Here is our setup: We have static ip addresses and the modem is in the bridged mode. We have only 3 devices on the network: 1. Computer A with a web server and a dns server running Windows 10 pro. 2. Computer B with a web server, dns secondary server, and an email server running Windows 10 pro. 3. A
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All of the gateways handle static IP routing in the same fashion, and as far as I've been able to tell it's as "clean" as I've needed it to be. I am running numerous firewall/VPN appliances behind both the SMCD3G and the Cisco DPC3939B. I have used:
recommended Comcast modem for business with separate firewall / VPN
Can someone please provide a recommendation of the recommended DOCSIS 3.0 modem for use with a Comcast business account with /28 static IP block, wishing to run a separate firewall and perhaps other network devices needing to route from a public IP address? The "gateway" devices do not appear to do
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It's not the point business users can, if they wish, use their own modem. It's that, if they do, Comcast will not provision static IP addresses. This restriction seems, to me, silly at best. If Comcast is truly worried about abuse, they need to find
CG3000DCR - Multiple questions
It has come to my attention that the SMC 8014 business gateway has been replaced by the Netgear CG3000DCR. With this in mind, I have several questions. (1) I've seen some (lightly) used CG3000DCR's come up on Ebay every so often. If I purchase one of these units to replace my current SMC box, and tu
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Madman I too am having the excat same issues. I too have done extensive testing, and when talking to Comcast only to be told that they have no SMC cable modems. I am posting my WinMTR report too: Host%SentRecvBestAvrgWrstLast10.1.10.13103210050167398
Issues with the Netgear CG3000DCR - surprised?
So, I was originally a Comcast home user and migrated to Comcast business. While I was a home customer, I had an Arris CM820A modem that worked without issue. Since being on Comcast business, I have had nothing but problems with the Netgear. Here are my issues: 1. Periodic packet loss 2. Sub-optimal
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Static routing to a router: how do I assign the router an ip address?
I have a netgear wireless router attached to my Comcast cable modem. LAN subnet is 192.168 If I understand the manual correctly, if add static routes to each of these modems, then computers connected wirelessly to the routers can then speak to the computer attached directly to the cable modem, i.e.,
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Domain Names/Static IP
I am now being charged for cable equipment that I have NEVER HAD
I am very frustrated in the bait and switch of Comcast. When setting up comcast initally for our small non profit, we only needed internet service. The pricing for internet/cable was half the price of the internet alone due to "promotional pricing". Of course we took the combined package to save $.
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Customer Service
Comcast technician came by today. We tried two of the mid-line modems, one was totally flaky, the other less-so. NEITHER can do port forwarding of any kind—error messages with the most rudimentary configuration. Then we installed the hi
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port forwarding on newer routers does not work
Still running a 5-year-old Comcast business router. It has full support for NAT, including the ability to map the incoming port to an outgoing port for example: :22 to :2222 such as: 100.100.100.100:22 to 10.0.0.5:2222 This port remapping is critical (NOT just IP alone) because ports like port 22 (S
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