[NANOG] Comcast latency

Jim Popovitch yahoo at jimpop.com
Wed Apr 30 08:46:38 CDT 2008


On Wed, Apr 30, 2008 at 8:14 AM, Steven M. Bellovin <smb at cs.columbia.edu> wrote:
> On Tue, 29 Apr 2008 23:43:46 -0500
>  mack <mack at exchange.alphared.com> wrote:
>
>  > Has anyone else noticed a significant increase in latency within
>  > Comcast's network?
>  >
>  On one quick test, it looks normal to me from my house.

Looks can sometimes be deceiving. ;-)  I've seen Comcast drop packets
left and right, but show 8Mbs/2Mbs on speed test sites.   Other times
I've seen the opposite, zero PL but extremely high latency (seconds,
double digits!)... all the while non-dynamic web pages (probably
cached upstream) loaded just fine.

Look, I've always been a big fan of Comcast.... but at this point I
suspect they have just about over-engineered their network.

-Jim P.




More information about the NANOG mailing list