public network bandwidth usage

Hello all,

We've recently seen a huge increase in bandwidth usage on
our public network, and are trying to determine whether this
is similar to what other large public libraries are
experiencing.  Public PCs (approx 400 in total) in all of
our branches share a 100Mbps pipe, but we only pay for a 10
meg service with bursting capabilities as required (for a
cost).  

As of March 2006, we were averaging 1.5 Megs usage, with
spikes to 4 Megs, but we're now looking at traffic during
business hours regularly hits 30 Mbps inbound and peaks past
40 Mbps.  Not surprisingly, the most common destination
appears to be various Akamai.net sites, with video and image
intensive sites such as Facebook and YouTube also appearing
as heavy users. Most of the traffic is HTTP (TCP 80),
followed at a distance by HTTPS (TCP 443) with a small
amount of instant messaging an other protocols.

Are others seeing similar increases?  If so, how many public
PCs do you have (for the sake of comparison)?


Craig Ginther
Acting Manager, Virtual Library Services
Ottawa Public Library/Bibliothèque publique d'Ottawa
101 Centrepointe Drive, Ottawa, Ontario K2G 5K7
Phone: 613-580-2424 x41588
Craig.GintherBiblioOttawaLibrary.ca
http://www.BiblioOt
tawaLibrary.ca





This e-mail originates from the City of Ottawa e-mail
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contains by other than the intended recipient(s) is
unauthorized.
If you are not the intended recipient, please notify me at
the
telephone number shown above or by return e-mail and delete
this
communication and any copy immediately. Thank you.

Le présent courriel a été expédié par le système de
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la Ville d'Ottawa. Toute distribution, utilisation ou
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_______________________________________________
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http://lists.we
bjunction.org/web4lib/

We have two T-1's and are experiencing a similar situation.
We were running 
on just one up until April, added a second and were thinking
great. NOT!!!!!!!


Lin

Lin Light
Head of Computer
 & Technical Services
Herrick District Library
300 South River Ave.
Holland, MI 49423
Voice 616-355-3727
Fax   616-355-1426

---------- Original Message -----------
From: "GINTHER, Craig" <Craig.Gintherbiblioottawalibrary.ca>
To: <web4libwebjunction.org>
Sent: Thu, 20 Dec 2007 13:57:17 -0500
Subject: [Web4lib] public network bandwidth usage

> Hello all,
> 
> We've recently seen a huge increase in bandwidth usage
on our public 
> network, and are trying to determine whether this is
similar to what 
> other large public libraries are experiencing.  Public
PCs (approx 
> 400 in total) in all of our branches share a 100Mbps
pipe, but we 
> only pay for a 10 meg service with bursting
capabilities as required 
> (for a cost).
> 
> As of March 2006, we were averaging 1.5 Megs usage,
with spikes to 4 
> Megs, but we're now looking at traffic during business
hours 
> regularly hits 30 Mbps inbound and peaks past 40 Mbps. 
Not 
> surprisingly, the most common destination appears to be
various 
> Akamai.net sites, with video and image intensive sites
such as 
> Facebook and YouTube also appearing as heavy users.
Most of the 
> traffic is HTTP (TCP 80), followed at a distance by
HTTPS (TCP 443)
>  with a small amount of instant messaging an other
protocols.
> 
> Are others seeing similar increases?  If so, how many
public PCs do 
> you have (for the sake of comparison)?
> 
> Craig Ginther
> Acting Manager, Virtual Library Services
> Ottawa Public Library/Biblioth&#65533;que publique
d'Ottawa
> 101 Centrepointe Drive, Ottawa, Ontario K2G 5K7
> Phone: 613-580-2424 x41588
> Craig.GintherBiblioOttawaLibrary.ca
> http://www.BiblioOt
tawaLibrary.ca
> 
> This e-mail originates from the City of Ottawa e-mail
system. Any 
> distribution, use or copying of this e-mail or the
information it 
> contains by other than the intended recipient(s) is
unauthorized. 
> If you are not the intended recipient, please notify me
at the 
> telephone number shown above or by return e-mail and
delete this 
> communication and any copy immediately. Thank you.
> 
> Le pr&#65533;sent courriel a
&#65533;t&#65533; exp&#65533;di&#65533; par
le syst&#65533;me de courriels de 
> la Ville d'Ottawa. Toute distribution, utilisation ou 
> reproduction 
> du courriel ou des renseignements qui s'y trouvent par
une 
> personne autre que son destinataire pr&#65533;vu
est interdite. Si vous 
> avez re&#65533;u le message par erreur, veuillez
m'en aviser par 
> t&#65533;l&#65533;phone (au num&#65533;ro
pr&#65533;cit&#65533;) ou par courriel, puis
supprimer 
> sans 
> d&#65533;lai la version originale de la
communication ainsi que toutes 
> ses copies. Je vous remercie de votre collaboration.
> _______________________________________________
> Web4lib mailing list
> Web4libwebjunction.org
> http://lists.we
bjunction.org/web4lib/
------- End of Original Message -------

_______________________________________________
Web4lib mailing list
Web4libwebjunction.org
http://lists.we
bjunction.org/web4lib/

We have two T-1's and are experiencing a similar situation.
We were running 
on just one up until April, added a second and were thinking
great. NOT!!!!!!!


Lin

Lin Light
Head of Computer
 & Technical Services
Herrick District Library
300 South River Ave.
Holland, MI 49423
Voice 616-355-3727
Fax   616-355-1426

---------- Original Message -----------
From: "GINTHER, Craig" <Craig.Gintherbiblioottawalibrary.ca>
To: <web4libwebjunction.org>
Sent: Thu, 20 Dec 2007 13:57:17 -0500
Subject: [Web4lib] public network bandwidth usage

> Hello all,
> 
> We've recently seen a huge increase in bandwidth usage
on our public 
> network, and are trying to determine whether this is
similar to what 
> other large public libraries are experiencing.  Public
PCs (approx 
> 400 in total) in all of our branches share a 100Mbps
pipe, but we 
> only pay for a 10 meg service with bursting
capabilities as required 
> (for a cost).
> 
> As of March 2006, we were averaging 1.5 Megs usage,
with spikes to 4 
> Megs, but we're now looking at traffic during business
hours 
> regularly hits 30 Mbps inbound and peaks past 40 Mbps. 
Not 
> surprisingly, the most common destination appears to be
various 
> Akamai.net sites, with video and image intensive sites
such as 
> Facebook and YouTube also appearing as heavy users.
Most of the 
> traffic is HTTP (TCP 80), followed at a distance by
HTTPS (TCP 443)
>  with a small amount of instant messaging an other
protocols.
> 
> Are others seeing similar increases?  If so, how many
public PCs do 
> you have (for the sake of comparison)?
> 
> Craig Ginther
> Acting Manager, Virtual Library Services
> Ottawa Public Library/Biblioth&#65533;que publique
d'Ottawa
> 101 Centrepointe Drive, Ottawa, Ontario K2G 5K7
> Phone: 613-580-2424 x41588
> Craig.GintherBiblioOttawaLibrary.ca
> http://www.BiblioOt
tawaLibrary.ca
> 
> This e-mail originates from the City of Ottawa e-mail
system. Any 
> distribution, use or copying of this e-mail or the
information it 
> contains by other than the intended recipient(s) is
unauthorized. 
> If you are not the intended recipient, please notify me
at the 
> telephone number shown above or by return e-mail and
delete this 
> communication and any copy immediately. Thank you.
> 
> Le pr&#65533;sent courriel a
&#65533;t&#65533; exp&#65533;di&#65533; par
le syst&#65533;me de courriels de 
> la Ville d'Ottawa. Toute distribution, utilisation ou 
> reproduction 
> du courriel ou des renseignements qui s'y trouvent par
une 
> personne autre que son destinataire pr&#65533;vu
est interdite. Si vous 
> avez re&#65533;u le message par erreur, veuillez
m'en aviser par 
> t&#65533;l&#65533;phone (au num&#65533;ro
pr&#65533;cit&#65533;) ou par courriel, puis
supprimer 
> sans 
> d&#65533;lai la version originale de la
communication ainsi que toutes 
> ses copies. Je vous remercie de votre collaboration.
> _______________________________________________
> Web4lib mailing list
> Web4libwebjunction.org
> http://lists.we
bjunction.org/web4lib/
------- End of Original Message -------

_______________________________________________
Web4lib mailing list
Web4libwebjunction.org
http://lists.we
bjunction.org/web4lib/

Craig,

Yes. We've gone from a single T-1 to a pair of T-1s to a
10Mbps fiber 
connection in just the past couple of years. Currently we're
using 
between 40 - 60% of that capacity with peaks up to 70%. This
pipe 
handles traffic for both our public and staff networks at
two locations. 
We have about 100 computers between the two networks with
the majority 
being on the public network. We also provide public wireless
access at 
both locations and average around 350 users a month on that
network. We 
also have our Township's web, mail and gis mapping servers
on the same 
connection.

I've said for years that no matter how much you upgrade,
patron usage of 
your computers will eventually consume whatever bandwidth
you provide. 
When you don't have the capacity, they'll find the
experience of 
streaming audio and video frustrating so they won't bother.
Same for 
downloading large files, etc. But as your network capacity
increases to 
accommodate those uses, more and more users will take
advantage of that 
bandwidth to use those services until it's time for another
upgrade.

Andrew Mutch
Library Systems Technician
Waterford Township Public Library
Waterford, MI


GINTHER, Craig wrote:
> Hello all,
>
> We've recently seen a huge increase in bandwidth usage
on our public network, and are trying to determine whether
this is similar to what other large public libraries are
experiencing.  Public PCs (approx 400 in total) in all of
our branches share a 100Mbps pipe, but we only pay for a 10
meg service with bursting capabilities as required (for a
cost).  
>
> As of March 2006, we were averaging 1.5 Megs usage,
with spikes to 4 Megs, but we're now looking at traffic
during business hours regularly hits 30 Mbps inbound and
peaks past 40 Mbps.  Not surprisingly, the most common
destination appears to be various Akamai.net sites, with
video and image intensive sites such as Facebook and YouTube
also appearing as heavy users. Most of the traffic is HTTP
(TCP 80), followed at a distance by HTTPS (TCP 443) with a
small amount of instant messaging an other protocols.
>
> Are others seeing similar increases?  If so, how many
public PCs do you have (for the sake of comparison)?
>
>
> Craig Ginther
> Acting Manager, Virtual Library Services
> Ottawa Public Library/Bibliothèque publique d'Ottawa
> 101 Centrepointe Drive, Ottawa, Ontario K2G 5K7
> Phone: 613-580-2424 x41588
> Craig.GintherBiblioOttawaLibrary.ca
> http://www.BiblioOt
tawaLibrary.ca
>
>
>
>
>
> This e-mail originates from the City of Ottawa e-mail
system. Any 
> distribution, use or copying of this e-mail or the
information it 
> contains by other than the intended recipient(s) is
unauthorized. 
> If you are not the intended recipient, please notify me
at the 
> telephone number shown above or by return e-mail and
delete this 
> communication and any copy immediately. Thank you.
>
> Le présent courriel a été expédié par le système de
courriels de 
> la Ville d'Ottawa. Toute distribution, utilisation ou 
> reproduction 
> du courriel ou des renseignements qui s'y trouvent par
une 
> personne autre que son destinataire prévu est
interdite. Si vous 
> avez reçu le message par erreur, veuillez m'en aviser
par 
> téléphone (au numéro précité) ou par courriel, puis
supprimer 
> sans 
> délai la version originale de la communication ainsi
que toutes 
> ses copies. Je vous remercie de votre collaboration.
> _______________________________________________
> Web4lib mailing list
> Web4libwebjunction.org
> http://lists.we
bjunction.org/web4lib/
>   
_______________________________________________
Web4lib mailing list
Web4libwebjunction.org
http://lists.we
bjunction.org/web4lib/

Craig,

Yes. We've gone from a single T-1 to a pair of T-1s to a
10Mbps fiber 
connection in just the past couple of years. Currently we're
using 
between 40 - 60% of that capacity with peaks up to 70%. This
pipe 
handles traffic for both our public and staff networks at
two locations. 
We have about 100 computers between the two networks with
the majority 
being on the public network. We also provide public wireless
access at 
both locations and average around 350 users a month on that
network. We 
also have our Township's web, mail and gis mapping servers
on the same 
connection.

I've said for years that no matter how much you upgrade,
patron usage of 
your computers will eventually consume whatever bandwidth
you provide. 
When you don't have the capacity, they'll find the
experience of 
streaming audio and video frustrating so they won't bother.
Same for 
downloading large files, etc. But as your network capacity
increases to 
accommodate those uses, more and more users will take
advantage of that 
bandwidth to use those services until it's time for another
upgrade.

Andrew Mutch
Library Systems Technician
Waterford Township Public Library
Waterford, MI


GINTHER, Craig wrote:
> Hello all,
>
> We've recently seen a huge increase in bandwidth usage
on our public network, and are trying to determine whether
this is similar to what other large public libraries are
experiencing.  Public PCs (approx 400 in total) in all of
our branches share a 100Mbps pipe, but we only pay for a 10
meg service with bursting capabilities as required (for a
cost).  
>
> As of March 2006, we were averaging 1.5 Megs usage,
with spikes to 4 Megs, but we're now looking at traffic
during business hours regularly hits 30 Mbps inbound and
peaks past 40 Mbps.  Not surprisingly, the most common
destination appears to be various Akamai.net sites, with
video and image intensive sites such as Facebook and YouTube
also appearing as heavy users. Most of the traffic is HTTP
(TCP 80), followed at a distance by HTTPS (TCP 443) with a
small amount of instant messaging an other protocols.
>
> Are others seeing similar increases?  If so, how many
public PCs do you have (for the sake of comparison)?
>
>
> Craig Ginther
> Acting Manager, Virtual Library Services
> Ottawa Public Library/Bibliothèque publique d'Ottawa
> 101 Centrepointe Drive, Ottawa, Ontario K2G 5K7
> Phone: 613-580-2424 x41588
> Craig.GintherBiblioOttawaLibrary.ca
> http://www.BiblioOt
tawaLibrary.ca
>
>
>
>
>
> This e-mail originates from the City of Ottawa e-mail
system. Any 
> distribution, use or copying of this e-mail or the
information it 
> contains by other than the intended recipient(s) is
unauthorized. 
> If you are not the intended recipient, please notify me
at the 
> telephone number shown above or by return e-mail and
delete this 
> communication and any copy immediately. Thank you.
>
> Le présent courriel a été expédié par le système de
courriels de 
> la Ville d'Ottawa. Toute distribution, utilisation ou 
> reproduction 
> du courriel ou des renseignements qui s'y trouvent par
une 
> personne autre que son destinataire prévu est
interdite. Si vous 
> avez reçu le message par erreur, veuillez m'en aviser
par 
> téléphone (au numéro précité) ou par courriel, puis
supprimer 
> sans 
> délai la version originale de la communication ainsi
que toutes 
> ses copies. Je vous remercie de votre collaboration.
> _______________________________________________
> Web4lib mailing list
> Web4libwebjunction.org
> http://lists.we
bjunction.org/web4lib/
>   
_______________________________________________
Web4lib mailing list
Web4libwebjunction.org
http://lists.we
bjunction.org/web4lib/