nanog mailing list archives
Re: Observations of an Internet Middleman (Level3)
From: "Livingood, Jason" <Jason_Livingood () cable comcast com>
Date: Fri, 16 May 2014 14:58:57 +0000
On 5/16/14, 7:56 AM, "Vinny Abello" <vinny () abellohome net> wrote:
I think he's questioning why packets from speedtest.comcast.net have CS1 if everything is supposedly equal, and what that is used for. A quick Wireshark shows that to be true right now running to your Plainfield, NJ speedtest site, and my network peers directly with Comcast. I'm kind of curious too. What is the purpose of this? Is it the traditional purpose of CS1 to be less than best effort or something else? If this is the case it seems Comcast would be purposely putting themselves at a disadvantage in speed tests when congestion is involved... or is this possibly on purpose to make peering problems look even worse during congestion?
Ah! That makes sense now. CS1 is used internally to mark best effort Internet traffic. This has often caused confusion when folks see our markings. If folks want to send me any data off-list that you think merits further investigation, let me know (never know if something someplace is an honest config error). Jason
Current thread:
- Re: Observations of an Internet Middleman (Level3), (continued)
- Re: Observations of an Internet Middleman (Level3) Scott Berkman (May 15)
- Re: Observations of an Internet Middleman (Level3) McElearney, Kevin (May 15)
- Re: Observations of an Internet Middleman (Level3) Jared Mauch (May 15)
- Re: Observations of an Internet Middleman (Level3) McElearney, Kevin (May 15)
- Re: Observations of an Internet Middleman (Level3) Blake Dunlap (May 15)
- Re: Observations of an Internet Middleman (Level3) Joe Greco (May 15)
- Re: Observations of an Internet Middleman (Level3) arvindersingh (May 15)
- Re: Observations of an Internet Middleman (Level3) Livingood, Jason (May 16)
- Re: Observations of an Internet Middleman (Level3) Vinny Abello (May 16)
- Re: Observations of an Internet Middleman (Level3) Christopher Morrow (May 16)
- Re: Observations of an Internet Middleman (Level3) Livingood, Jason (May 16)
- Re: Observations of an Internet Middleman (Level3) bas (May 18)
- Re: Observations of an Internet Middleman (Level3) Joe Greco (May 15)
- Re: Observations of an Internet Middleman (Level3) Ryan Brooks (May 15)
- Re: Observations of an Internet Middleman (Level3) Paul Ferguson (May 15)
- Re: Observations of an Internet Middleman (Level3) Owen DeLong (May 15)
- Re: Observations of an Internet Middleman (Level3) Paul Ferguson (May 15)
- Re: Observations of an Internet Middleman (Level3) Joe Greco (May 15)
- Re: Observations of an Internet Middleman (Level3) Christopher Morrow (May 15)
- Re: Observations of an Internet Middleman (Level3) Scott Helms (May 15)
- Re: Observations of an Internet Middleman (Level3) Christopher Morrow (May 15)