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New Contributor
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Download speed..."adjustments"?
Does Cox throttle downstream bandwidth while game consoles are connected to their respective online services? For example, once I connect to Xbox Live, my continuously checked speed test essentially "caps" at about 3.5Mbps down, while my upstream soars to almost 20Mbps. After I disconnect from Xbox Live, my downstream returns to roughly 28Mbps, and my upstream...well, my upstream is never really consistent ranging from 1Mbps-28Mbps at any given time. However, because of this, I have placed a packet monitor between my Xbox and router, and can say unequivocally, the Xbox Live connection is stopping right around 3-4 Mbps at any given time. This, "coincidentally" is the same speeds I am getting from any other device that I connect to the network while Xbox Live is connected.
Health_Edge
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Valued Contributor III
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Sounds like your router is giving priority to the Xbox when its running. I have never heard of Cox throttling any kind of game traffic, since it just doesn't take enough bandwidth to be worth it. What router do you have and do you have QoS enabled?
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ClevelandITGuy
New Contributor
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Just a Linksys E900...same setup as I came to the Cox area with after being stuck in a Time Warner area. No QoS enabled.
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ClevelandITGuy
New Contributor
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Ok, I've just enabled Internet Access Priority and prioritized TCP 80, and UDP 88, 3074, 22728, and 33233. We'll give it a go...
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Health_Edge
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Valued Contributor III
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Well if the symptom is PC throughput is low when Xbox is in use, then enabling QoS for the Xbox is the last thing you want to do. I asked about QoS because some routers (specifically Dlink) have "intelligent" QoS which can detect game traffic and automatically prioritize for it. They will sometimes also adjust the upload so to move the bottleneck inside the LAN to control it.
Are you using a stand alone modem? If your using a gateway it might also have similar configurations.
One way to test it would be to start the Xbox to replicate the issue, and then turn off the Xbox and immediate do the speed test on the PC. If the speed restores right when traffic is cut off then its unlikely to be a throttling issue because as far as ISP is concerned, traffic will still be in route.
Also, what are you using for packet monitoring between Xbox and router>
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ClevelandITGuy
New Contributor
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Well, I was thinking about the QoS after I set it up, and figured if anything, I'd see if the Xbox connection improved...it didn't. I had since shut it down and took a break while I got some work done...then since I got your reply, I was testing the connection, and I'm back up to 30.xxMbps down and about 7.xxMbps up. I started up CoD BOII and started playing a match while testing the speed and everything seems fine now. It's odd to say the least. Oh, and I'm runnin' a PC inline with dual NICs and wireshark.
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