schools really need a proxy like squid. One person hits a site and then 30 others hit the same site. Squid will (in this example) cut the used bandwidth to about 1/30 as the first hit is cached. Saw this in action during the APS Linux thin client project. bandwidth is scarce in schools and not having a caching proxy is just a bad idea.<br>
<br><div class="gmail_quote">On Wed, Sep 29, 2010 at 1:53 PM, david w. millians <span dir="ltr"><<a href="mailto:millia@panix.com">millia@panix.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im">On 9/29/2010 10:39 AM, Michael Trausch wrote:<br>
> While I am quite sure that it would be possible to load-balance with<br>
> NAT connections, I don't think it would be terribly useful. I often<br>
> see a place that will have a high-speed primary link, and a very low<br>
> speed backup link. Failover is far more appropriate.<br>
<br>
</div>In this case, it will be a... let's see. 4 schools = a 12 megabit link<br>
from AT&T, and I *believe* a 10 megabit from their cable operator.<br>
<div class="im"><br>
> Now, if some place has two identical links that come in different<br>
> ways, way, a T1 from place A and a T1 from place B, and there were a<br>
> way to bond the two together such that they would work as a single<br>
> virtual pipe and subsequently suffer the failure of one of them, then<br>
> I think that load-balancing would be quite appropriate. But I have<br>
> yet to encounter such a situation, personally.<br>
<br>
</div>Well, there is no school district that I know of that really has enough<br>
bandwidth. Most places, for example, have to block youtube just because<br>
it kills all the bandwidth. A single school is allocated, with e-rate et<br>
al, a 3megabit connection with (I think) it currently set at a 20%<br>
guarantee of service. That could be a 33% though, and in reality most<br>
schools get pretty close to their full 3 megabits. But, again, that's a<br>
3 meg connection for a whole school.<br>
<br>
So, if the other connection is anything above 5 megabits, it'll make a<br>
noticeable difference. Load sharing would be Good.<br>
<br>
And as said, I'll do roll-my-own if we need to- I'm just hoping that<br>
somebody can say, oh yeah, I setup a ClarkConnect/ClearOS box to do just<br>
that, and thumbs up. Jim's links are good, and appreciated.<br>
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