|reply to DataRiker |
Re: I don't get it....
I have both HFC and FIOS, and the difference is a solid 8-10ms.
This is quite easy to test. I have servers colocated in Tampa, in a facility who has 5 transit carriers-- one of them being Brighthouse. The colo is located in 400 N Tampa St, which is also where one of Brighthouse's downtown POPs is located. To make it even better, the BHN-owned router that terminates the fiber into this facility is (literally) 6 cabinets down the row from our cabinet. My pings across BHN Road Runner to these servers homed on BHN Enterprise Fiber, are 14-16ms.
I'm familiar with the fiber path between our part of the county into Hillsborough county. I can't tell you street by street, but I do know the general path, and which areas of the city it crosses before reaching downtown Tampa. It's reasonably direct, with some obvious twists and turns as would be any metro-regional path.
Next up is FIOS. We have offices connected via FIOS, which are even further away-- on the order of 20+ miles further. Ping times across FIOS, to these other hosts on FIOS, are in the 6-8ms range.
Now, let's forget hosts for a moment and talk routers. Ping times across a Brighthouse Road Runner connection to Brighthouse routers known to be in Tampa are on the order of 12-14ms. Ping times to Verizon routers known also to be in Tampa, are 4-6ms.
No matter how you approach it, across approximately the SAME physical path distance, the HFC network induces approximately 8-10ms of additional latency.
To compare latency you would have to take the same route on comparable equipment.
The vast majority of the lag you see is certainly in either the Route or an overloaded or old piece of equipment (Router, CMTS, whatever...)