[169271] in North American Network Operators' Group
Re: comcast business service
daemon@ATHENA.MIT.EDU (Jared Mauch)
Thu Feb 20 10:28:16 2014
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <CAH_OBidPuZJ05RNC-UdWnD4oq-hLRPtvKCfdZhMSss5Bmn5zFA@mail.gmail.com>
Date: Thu, 20 Feb 2014 10:27:37 -0500
To: shawn wilson <ag4ve.us@gmail.com>
Cc: North American Network Operators Group <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Feb 20, 2014, at 4:08 AM, shawn wilson <ag4ve.us@gmail.com> wrote:
> A while ago I got Comcast's business service. Semi-idle connections
> are get dropped (I haven't really diagnosed this - I just no that it
> isn't the client or server but some network in between). However the
> second and most obvious issue is that intermittently, the service will
> grind to a halt:
> --- 8.8.8.8 ping statistics ---
> 37 packets transmitted, 34 received, 8% packet loss, time 36263ms
> rtt min/avg/max/mdev =3D 398.821/5989.160/14407.055/3808.068 ms, pipe =
15
>=20
> After a modem reboot, it goes normal:
> --- 8.8.8.8 ping statistics ---
> 4 packets transmitted, 4 received, 0% packet loss, time 3003ms
> rtt min/avg/max/mdev =3D 23.181/23.920/24.298/0.474 ms
>=20
> This seems to happen about once or twice a day. I can't attribute it
> to any type of traffic or number of connections. All of the rest of
> the network equipment is the same and the behavior persists when a
> computer is plugged directly into the modem. I called Comcast and they
> said they didn't see anything even when I was experiencing ridiculous
> ping times. I tend to think it's an issue with the 'modem' but I'm not
> sure what the issue might be or how to reproduce it when asked to if I
> tell them to look at it.
Is this on their DOCSIS service? I've seen the F connector on the back =
of the CM
introduce noise to the local segment and cause troubles. If so, you =
need to have them
dispatch and swap the CM with one that doesn't have this issue.
- Jared
