RE: M$ NLB vs. RainWall for ISA
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Sun, 23 Feb 2003 11:41:09 -0600
Hi David,
The Win2003 NLB will support symmetric routing when ISA Server is
installed and you use a special tool. However, load balancing is still
based on a simple hashing of source address/port combinations, depending
on how you configured affinity settings. RainWall load balances based on
processor and memory utilization parameters (something I should have
made a bigger deal about in the talk).
Thanks!
Tom
Thomas W Shinder
www.isaserver.org/shinder
-----Original Message-----
From: David V. Dellanno [mailto:ddellanno@xxxxxxxxxx]
Sent: Friday, February 21, 2003 2:19 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: M$ NLB vs. RainWall for ISA
http://www.ISAserver.org
Will Windows 2003 NLB be able to handle the symmetric routing?
-----Original Message-----
From: Thomas W Shinder
[mailto:tshinder@xxxxxxxxxxxxxxxxxx]
Sent: Friday, February 21, 2003 3:19 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: M$ NLB vs. RainWall for ISA
http://www.ISAserver.org
Hi Paul,
Thanks! I appreciate your kind words about my
presentation :-)
There are several advantages that RainWall has over the
Win2k NLB:
1. The major one is symmetric routing. If you want to
have inbound and outbound fault tolerance, NLB can't fill the bill. You
have to choose one or the other.
2. While you can use HTTPMon, RainWall is aware of all
ISA Server services, and can be make aware of other Win2k network and
system services. RainWall can also be made aware of other network and
non-network services.
3. VPN gateways can be a nightmare with NLB. They work
great with RainWall
4. From the information I have, it costs much less to
run RainWall than to upgrade to Win2k Advanced Server.
There's are lot more cool stuff in RainWall than I had
time to go over. Look for my articles on RainWall at www.isaserver.org
in the next few weeks.
Thanks!
Tom
-----Original Message-----
From: Paul Berg [mailto:frogman1370@xxxxxxxxx]
Sent: Friday, February 21, 2003 2:05 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] M$ NLB vs. RainWall for ISA
http://www.ISAserver.org
Tom,
I was very impressed with the presentation that
you gave yesterday with the Rainwall product. The only thing that
really caught my eye in the difference of Microsoft's Load Balancing was
that it was unable to fault tolerent if an ISA service was to fail
(without configuring HTTPmon). My question is: Does the cost of
RainWall justify the cost of having to upgrade a server to Windows 2000
Advance in order to do Network Load Balancing.
Exactly what is the cost in licensing Rainwall,
by the way?
Paul
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