Looking to enhance your home network with space for upcoming upgrades
Looking to enhance your home network with space for upcoming upgrades
I reside in a compact apartment and currently use an Arris SBG8300 modem/router combo for several years. Recently, over the past roughly six months, it's begun malfunctioning unexpectedly, prompting me to re-seat its power cord to resolve the issue. While this isn’t a major concern, it’s becoming increasingly irritating. I’m looking for a more modular setup rather than a single all-in-one device. Ideally, I’d like separate components that can be upgraded individually when needed—such as switching to fiber if I move into a better location or installing a larger rack-mount switch. My goal is to have a copper coax connection that connects to fiber, then a fiber gateway compatible with my Comcast internet, followed by a fiber switch and finally a solid access point. As someone working in commercial AV and familiar with enterprise networking, I’m comfortable with technical specs but not well-versed in home equipment. If you’re unfamiliar with the terminology, I’ll try to explain clearly. I’m struggling to find reliable products that fit my requirements without breaking the bank. Would any suggestions or guidance help me avoid unnecessary purchases?
I wouldn't necessarily worry about a rack unless it truly fits the purpose. Otherwise it's just extra space. Keep in mind you can also use a shelf on a rack for items that aren't meant for mounting. What internet speeds are you currently using? Do you have wired connections? What is your speed, and how many connections do you require? From my experience with consumer modems and routers, they often need active cooling to avoid performance drops and frequent restarts. I used to install fans on both devices to prevent these issues.
I talked about the rack because I have a very poorly planned NAS at home with Plex and Arrs installed. A proper server has always been my goal, but it hasn’t been achievable yet. If I ever found a suitable space that makes sense, I’d rebuild everything properly this time and add more networking features. Regarding your questions: - My current speeds are around 400mb symmetric - All my devices—PC, work laptop, streaming box—are wired. In the future I’d like more capacity (the router only has 4 ports) As for cooling, I’ve noticed it gets very hot. Since it’s a 6-year-old unit, I’m hesitant to blame overheating on temperatures. I place it on a shelf near an A/C vent, but I can’t imagine much better airflow without a custom fan setup.
For a modem you need a Comcast-approved device. Most major internet companies list third-party ISP modems on their websites. It’s unclear how likely it is to find a small Coax to Single Mode Fiber converter. I’m certain such a unit exists nearby, which explains the coax line you have. However, ISPs often use BGP (Border Gateway Protocol), and I’m unsure if signals over coax can be converted to fiber for a fiber modem. I’d need to verify this. Regarding routers, the modem will switch to copper Ethernet—not fiber. From the router, consumer-grade equipment remains copper Ethernet. Switches offer flexibility with fiber switches and servers. You can choose PoE support or use injectors for wireless APs or cameras. If your connection is 400/400 Mbps, there’s no need to route massive data across subnets or worry about saturation. Also, moving to a location with fiber doesn’t guarantee the new ISP will accept your existing modem if you attempt the conversion now. Personally, I’d opt for a coax modem connected directly to an Ethernet router, using it as a base, and switch to fiber later if required.
If it makes sense, it works well. Just confirm it fits your needs. I have a rack, and my NAS isn’t in it because it didn’t fit with my setup—it wasn’t practical. You actually have more connections than most people. Adding a switch to the router is straightforward. It seems you might just need to upgrade your modem/router setup. You can always include a switch if you require additional ports. Your air conditioner isn’t running continuously. For years I installed fans and heatsinks on every modem/router I owned. Once I noticed some airflow improved, it made sense. I’ve kept everything at 2.5G initially when I began the installation here. I’m gradually moving to 10G for most devices now. This is helpful since switches support higher speeds. @hu4d Have you thought about building your own router—like pfSense or OPNsense? I started this route to maintain a 2.5G network and didn’t explore other router choices. But it offers flexibility if you’re willing to learn a bit. Right now, I use a NUC for my system (which is more than enough) and have relied on Ubiquiti access points. It’s been convenient because I can easily replace access points when Wi-Fi evolves.
I found these configurations really interesting. Did you manage to get power through any extra internal connectors? I’m not great at soldering, so I’m wondering if I can keep up.
Usually these gadgets run on 12 volts, so I connected the power directly. The small fans consume minimal current.
Initially the fiber coax adapter won't function. Comcast, like other cable firms, relies on DOCSIS technology for internet delivery via coaxial cables. Fiber companies employ PON standards for their internet transmission. Moreover, purchasing a cable modem is primarily governed by an FCC regulation that only applies to traditional cable operators. Fiber and DSL services are exempt from this rule. Consequently, no US fiber service allows customer-owned ONUs/ONTs on their infrastructure. Certain carriers such as Verizon provide a standard ONU/ONT similar to a cable modem. Others like AT&T bundle everything into a single unit.
Regarding cable modems, they offer limited long-term compatibility. Cable companies are currently transitioning, mainly improving mid and high-speed splits. I’m aware Comcast has few retail modems capable of handling mid-speed upgrades. Other providers may have different configurations, while some implement high-speed splits. All cable operators are moving toward Docsis 4.0, which can be installed in various ways—this adds complexity for modems. There are currently no Docsis 4.0 retail units available. Only devices from the specific cable provider are supported. This isn’t the complete inventory, but it’s the recommended setup for optimal performance. The best options are those supporting mid-speed splits (higher upload), while others cater to slower speeds. Remember that not every region offers mid-speed capabilities. Also, when Docsis 4.0 becomes available, you’ll need a new modem or gateway to take advantage of it.
For simplicity, consider a UniFi reliability check. An UCG-Ultra with an 8-port switch and any WiFi 6/7 AP works well. I follow the guideline of one AP per 1200 square feet and adjust the settings accordingly.