Hello Jack,
JC> Hardware boxes will be fast and will do a good job of load-balancing.
JC> They'll also be expensive because they need to go all over the place
JC> (sandwiching in multiple dimensions).
RadWARE fireproof load balancers are doing a good job. They can also
be configured in VLANs, reducing the need of mulitple boxes for
simple configurations. The load balancing is done in multiple ways.
They only have 4 fast ethernets. They cost about $20,000.
You need two of them minimum.
Alteon switches are about the same price, but you need four of them in
even the simplest configuration. They support gigabit ethernet tough.
The laoc balancing is done on the couple "IP source - IP dest". This
lod balancing doesn't satisfy me (dangerous in case of attack, doesn't
take into account that entire providers appear as their tranparent
proxy's IP these days, ...)
After weeks of evaluation I think RadWARE products have some decisive
advantages over other solutions like foundry or Alteon. I rejected
Foundry because of TCP bugs causing trivial prediction sequence (that
were fixed since then I think.) The main problem with RadWARE could be
that the hardware is rather old, but new platforms are on the way.
We'll be using fast ethernet then gigabit ethernet RadWARE load
balancers in front of a farm of Sun Enterprise 220 with CKP FW1.
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