Re: Load Balancing the Proxy via Round Robin DNS
- From: "Greg Wright" <greg@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 26 Sep 2002 09:28:57 +1000
Cheers Shawn, Ill look into this. Sounds like a good way to go.
-----Original Message-----
From: Quillman Shawn (RBNA/CIT7)
[mailto:Shawn.Quillman@xxxxxxxxxxxx]
Sent: Thursday, 26 September 2002 4:47 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Load Balancing the Proxy via Round Robin
DNS
If you feel like being manual about things you can use a PAC
file. In a PAC file you specify rules and give an ordered list of
proxies to try based on the rules. The browser will try the first
server in the list first then, if it can't be reached, the second and so
on. You can include a randomizer in the PAC source that will return a
different order of proxies for each request, for each browsing session,
etc. Just depends on how creative you want to get with your javascript.
It's not perfect load balancing but it's working well for me. I
have to ISA's that can't be in the same AD site, therefore can't be in
one array. I'm not sure if they can be balanced with MLB / NLB since
I've never looked into them. Most NLB solutions I've seen require
machines to be on the same segment which my two servers definitely are
not. I support 15 or so locations around the US with 2 ISA's and a PAC
file. Works great.
-Shawn
-----
Shawn R. Quillman
Robert Bosch Corporation RBNA/CIT7
38000 Hills Tech Drive
Farmington Hills, MI 48331
(248) 553-1164 (P) (248) 848-2855 (F)
shawn.quillman@xxxxxxxxxxxx
-----Original Message-----
From: Paul Berg [mailto:frogman1370@xxxxxxxxx]
Sent: Wednesday, September 25, 2002 2:27 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: Load Balancing the Proxy via
Round Robin DNS
http://www.ISAserver.org
Greg,
I'm not sure about this <Everyone correct me if I'm
wrong>. But if you set the ISA servers as round robin, the traffic will
still be sent to the server regardless if it is down or not. What you
want to implement is the Microsoft Load Balancing which will discover if
the server has been disconnected from the network or not.
Greg Wright wrote:
http://www.ISAserver.org
Hi everyone,
Anyone played around with Round Robin DNS
configurations for load
balancing?
Specifically, what sort of issue's (if any)
exist when one of the
servers is offline?
Cheers,
Greg
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