Critical DSCP bug Affecting WiFi Download Speeds on Comcast Cisco E-Series and Others.
Forum » Discussions / Bugs » Critical DSCP bug Affecting WiFi Download Speeds on Comcast Cisco E-Series and Others.
Started by: jameshilliardjameshilliard
Date: 10 Sep 2013 07:54
Number of posts: 4
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Summary:
There is a critical bug that is likely crippling thousands of routers and pretty much only comcast has this issue. It is an edge case interaction caused by bad DSCP information coming from Comcast and poor condition handling by the WMM driver on certain linksys/cisco eseries routers and possibly others as well. This issue can appear on both stock and modded routers. Comcasts network is misconfigured and has been for years and has likely caused many people to needlessly replace fully functional routers, IPv6 speeds always worked for me because DSCP was configured correctly for that but it is incorrect for IPv4. Since the only packets with this bad information are the ones that are being downloaded upload is not affected nearly as badly.
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