[ietf83-tech] Wireless unstable/unusable

Sun Mar 25 07:00:29 PDT 2012

On Sun, Mar 25, 2012 at 3:13 PM, BREUGNOT Laurent <
lbreugnot at louvre-hotels.com> wrote:

> Hi Chris,
>
> I'm a bit worried by your comment, we usually don't have a lot of
> complaints about the wireless, even if we know it's not optimal.
>

Unfortunately, we are not the usual crowd, and this is why we try to head
off issues before they happen. And, as we discussed Friday, we were
concerned that the wireless network would not hold up to this crowd. And
last night strongly indicated that the wireless is not usable much of the
time.

> We currently have around 180 non-ietf guests on the hotel wireless, we
> often reach 300 without problem.
>

Our IETF room block has at least 428 reservations (that was from 11 days
ago), plus an unknown number of attendees that reserved through other
methods. My guess is that there are in excess of 500 rooms reserved to IETF
attendees. And, as we know, our attendees are not typical users of the
Internet. We use more varied protocols,  our load is heaver, and we tend to
have more devices using the network wirelessly than the typical hotel guest.

> FYI there are some electrical issue on the top floors (28 to 33) since
> friday night, the APs and switches on these floors are currently down. The
> technical team of the hotel is aware of the issue and is trying to solve it.
>

Great. Thanks for letting us know.

However, the problems we saw were on different floors--most of the folks
we've been talking to have been on floors 3, 4, and 5. I'll try to identify
room numbers of folks having issues.

> I wont' be back before 5pm, we can talk then if you wish.
>

Please. I'd love to have a meeting with you and Jim Martin to discuss what
we can do from here.

> In the meantime, have you some more detailed information on the problem
> you've encountered ?
>

We are seeing high rates of packet loss (10-70%), and extremely variable
delays--pings varying from 4ms (good) to in excess of 1800ms.

We are seeing very low utilization on the link between your network and
our's--a peak of about 16Mbits/sec. and an average of about 4Mbits/sec from
us to you, and and peak of about 4Mbits/sec. and an average of about
2Mbits/sec. from you to us. As you saw when I plugged directly into your
switch, we were able to transfer in excess of 300Mbits/sec. over the link,
with just a few receive buffer errors. So, my impression is that the
wireless side is our bottleneck.

I'm going to try to do a bit of analysis of the wireless spectrum and do
some additional informal testing before we meet.

Thanks!
Chris.

> Regards,
>
> Laurent Breugnot
>
>
> Le 25 mars 2012 à 10:33, "Chris Elliott" <chelliot at pobox.com> a écrit :
>
> Laurent,
>
> Performance in the hotel wireless became unusable last night, especially
> on the guest room floors.
>
> With many of our attendees staying in the Concorde still to check in, most
> today, I think we are assured of an even worse situation tonight and later.
>
> Can we meet at 3pm to discuss options?
>
> Thanks!
> Chris.
>
>
> --
> Chris Elliott
> CCIE # 2013
>
> “You and I are mirages that perceive themselves”
> --Douglas Hofstadter
>
> On Mar 23, 2012, at 3:23 PM, "BREUGNOT Laurent" <
> lbreugnot at louvre-hotels.com> wrote:
>
> > ok I'll be there at 15h35.
> >
> > Cordialement,
> >
> > Laurent BREUGNOT
> > Service Informatique
> > Tel. +33 (0) 1 40 68 53 51
> > Fax +33 (0) 1 40 68 53 70
> >
> > <https://www.louvre-hotels.fr/FR/ImagesContenu/sign/signature_LH.jpg>
> >
> > ________________________________
> >
> > De: chelliot at gmail.com de la part de Chris Elliott
> > Date: ven. 23/03/2012 15:20
> > À: BREUGNOT Laurent
> > Objet : Re: Bandwidth test
> >
> >
> > Laurent,
> >
> > I tested from my room, as well as from the lobby. I saw variable
> performance, including dropped packets.
> >
> > The link is solid from my side--would you verify what the HP switch is
> seeing on the link?
> >
> > I connected to the same subnet on this side and saw very good
> performance, as can be seen here:
> >
> > http://www.speedtest.net/result/1851471517.png
> >
> > I don't expect to see this performance, obviously, on wireless, but I do
> expect to see fairly consistent performance.
> >
> > I will come back over to the hotel with my laptop, with more test tools.
> Can I meet you in the lobby?
> >
> > Thanks.
> > Chris.
> >
> >
> > On Fri, Mar 23, 2012 at 3:05 PM, BREUGNOT Laurent <
> lbreugnot at louvre-hotels.com> wrote:
> >
> >
> >    Hey again,
> >
> >    Just made a connection test from my office where I'm very far away
> from the AP, the result is pretty correct:
> >    5Mb dowbnload and 9Mb upload.
> >    Any update on your side ?
> >
> >
> >    Regards,
> >
> >    Laurent BREUGNOT
> >    Service Informatique
> >    Tel. +33 (0) 1 40 68 53 51
> >    Fax +33 (0) 1 40 68 53 70
> >
> >
> >     <https://www.louvre-hotels.fr/FR/ImagesContenu/sign/signature_LH.jpg
> >
> >
> > ________________________________
> >
> >    De: Chris Elliott de la part de Chris Elliott
> >    Date: ven. 23/03/2012 09:44
> >    À: BREUGNOT Laurent
> >    Cc: ietf83-tech at daedelus.com
> >    Objet : Re: Optical Fiber
> >
> >
> >    On Mar 23, 2012, at 9:39 AM, "BREUGNOT Laurent" <
> lbreugnot at louvre-hotels.com> wrote:
> >
> >
> >
> >        Hello Chris,
> >
> >
> >
> >        Any success with the optical fiber yesterday ?
> >
> >
> >    No.
> >
> >
> >
> >
> >        According to the hotel, the link has been installed by the Palais
> des Congrès.
> >
> >        Did you talk to them about this issue ?
> >
> >
> >    Yes, and I will talk to them again.
> >
> >
> >
> >
> >         Regards,
> >
> >
> >
> >        Laurent BREUGNOT
> >
> >        Service Informatique
> >
> >        Tel. +33 (0) 1 40 68 53 51
> >
> >        Fax +33 (0) 1 40 68 53 70
> >
> >        <image001.png>
> >
> >
> >
> >
> >
> >
> > --
> > Chris Elliott
> > chelliot at pobox.com
> >
> >
> > <winmail.dat>
>
>

-- 
Chris Elliott
chelliot at pobox.com
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