[156781] in North American Network Operators' Group
Re: Anyone from Verizon/TATA on here? Possible Packet Loss
daemon@ATHENA.MIT.EDU (Blake Dunlap)
Wed Sep 26 13:11:31 2012
In-Reply-To: <A0A8FC37-9C42-48C5-93A3-444C9C6FF81B@derekivey.com>
From: Blake Dunlap <ikiris@gmail.com>
Date: Wed, 26 Sep 2012 12:10:15 -0500
To: Derek Ivey <derek@derekivey.com>
Cc: NANOG mailing list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
This is not the proper way to interpret traceroute information. Also, 3
pings is not sufficient to determine levels of packet loss statistically.
I suggest searching the archives regarding traceroute, or googling how to
interpret them in regards to packet loss, as what you posted does not
indicate what you think it does.
-Blake
On Wed, Sep 26, 2012 at 11:59 AM, Derek Ivey <derek@derekivey.com> wrote:
> Hi guys,
>
> We host a web application for a client and they've been complaining that
> it's been slow since yesterday. It seems fast from the locations I've
> tested and the system looks fine, so I suspected there was packet loss
> going on somewhere between them and our colo facility.
>
> I did a few trace routes from our firewall to the client's IP and most of
> the time they look fine, however I occasionally see some packet loss.
>
> Good trace route:
>
> 1 65.61.0.97 0 msec 0 msec 0 msec
> 2 107.1.118.217 0 msec 10 msec 0 msec
> 3 69.139.194.21 0 msec 0 msec 0 msec
> 4 68.86.147.129 10 msec 10 msec 20 msec
> 5 68.86.94.169 20 msec 30 msec 20 msec
> 6 68.86.86.26 20 msec 20 msec 10 msec
> 7 216.6.87.97 10 msec 20 msec 20 msec
> 8 216.6.87.34 10 msec 20 msec 10 msec
> 9 152.63.34.22 20 msec 10 msec 20 msec
> 10 130.81.28.255 30 msec 30 msec 20 msec
>
> Traceroutes with packet loss (8th hop):
>
> 1 65.61.0.97 0 msec 0 msec 0 msec
> 2 107.1.118.217 0 msec 10 msec 0 msec
> 3 69.139.194.21 0 msec 0 msec 0 msec
> 4 68.86.147.129 20 msec 10 msec 10 msec
> 5 68.86.94.169 20 msec 20 msec 30 msec
> 6 68.86.86.26 20 msec 20 msec 10 msec
> 7 216.6.87.97 10 msec 20 msec 30 msec
> 8 216.6.87.34 10 msec * 10 msec
> 9 152.63.34.22 140 msec 110 msec 20 msec
> 10 130.81.28.255 20 msec 30 msec 30 msec
>
> 1 65.61.0.97 10 msec 0 msec 0 msec
> 2 107.1.118.217 0 msec 10 msec 0 msec
> 3 69.139.194.21 0 msec 0 msec 0 msec
> 4 68.86.147.129 20 msec 20 msec 10 msec
> 5 68.86.94.169 30 msec 20 msec 20 msec
> 6 68.86.86.26 20 msec 20 msec 20 msec
> 7 216.6.87.97 20 msec 10 msec 20 msec
> 8 216.6.87.34 20 msec 40 msec *
> 9 152.63.34.22 20 msec 10 msec 10 msec
> 10 130.81.28.255 30 msec 30 msec 20 msec
>
> It appears the 8th hop occasionally has packet loss.
>
> Thanks,
> Derek
>
