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List: loadbalancing-l
Subject: RE: [load balancing] persistance and L7 content switching conflict
From: "Benny Falach" <bennyf () adanet ! co ! il>
Date: 2003-05-28 12:49:38
[Download RAW message or body]
Hi.,.
Install 10.0.28.12 ...and not 10.0.25.0 which was the the FCS version...
Thanks...
-----Original Message-----
From: Colm De Barra [mailto:colm@aruke.com]
Sent: Wednesday, May 28, 2003 9:20 AM
To: lb-l@vegan.net
Subject: Re: [load balancing] persistance and L7 content switching conflict
"Software Version 10.0.25-SSH (FLASH image1), active configuration"
Is the output I get when I telnet the 180e. Can you tell me if there are any
issues with this version ?
----- Original Message -----
From: Richard O'Halloran <mailto:rohallor@nortelnetworks.com>
To: 'lb-l@vegan.net'
Sent: Wednesday, May 28, 2003 4:03 PM
Subject: RE: [load balancing] persistance and L7 content switching conflict
Hi,
What version of code are you running on your 180e? There were some issues with L7 and \
persistency to do with HTTP1.1 that were broken in some early versions of code.
Rich.
-----Original Message-----
From: Colm De Barra [mailto:colm@aruke.com]
Sent: Tuesday, 27 May 2003 4:15 PM
To: lb-l@vegan.net
Subject: [load balancing] persistance and L7 content switching conflict
Alright,
I've started working with an alteon 180e and I'm learning
as I go. I have two app servers between which the alteon is
loadbalancing all http traffic. The websites are session based
so I have enabled clientip persistance to ensure that once a
client connects all their requests will go to the same server.
Now the client wants to set up a series of test pages on each
machine which will allow her to connect directly to the desired
machine and run some coldfusion db connectivity tests.
The testpages have their own unique directorynames depending on which
machine they're on, so I set it up to do layer 7 content switching based on
the url - it looks for the directory names in the URL - if it finds it, the request
is forwarded to the appropriate machine. If it doesn't find it, it loadbalances
the request as normal.
The only problem is that this doesn't work with persistance enabled.
if you try to go to the two different machines from the same clientip
then it doesn't work.
I'm going to look into different persistance methods but I thought I'd check
here first if anyone knows a way around the problem ??
Cheers
Colm
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
All things are possible except skiing thru a revolving door.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
My Website : http://www.angelfire.com/ia/japan/
BoomBox : http://www.b00mb0x.org
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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<DIV><SPAN class=240594812-28052003><FONT face=Arial color=#0000ff
size=2>Hi.,.</FONT></SPAN></DIV>
<DIV><SPAN class=240594812-28052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=240594812-28052003><FONT face=Arial color=#0000ff
size=2>Install 10.0.28.12 ...and not 10.0.25.0 which was the the FCS
version...</FONT></SPAN></DIV>
<DIV><SPAN class=240594812-28052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=240594812-28052003><FONT face=Arial color=#0000ff
size=2>Thanks...</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Colm De Barra
[mailto:colm@aruke.com]<BR><B>Sent:</B> Wednesday, May 28, 2003 9:20
AM<BR><B>To:</B> lb-l@vegan.net<BR><B>Subject:</B> Re: [load balancing]
persistance and L7 content switching conflict<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>"Software Version 10.0.25-SSH (FLASH image1),
active configuration"</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is the output I get when I telnet the 180e. Can
you tell me if there are any</FONT></DIV>
<DIV><FONT face=Arial size=2>issues with this version ?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: \
#000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original \
Message ----- </DIV> <DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rohallor@nortelnetworks.com
href="mailto:rohallor@nortelnetworks.com">Richard O'Halloran</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=lb-l@vegan.net
href="mailto:'lb-l@vegan.net'">'lb-l@vegan.net'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, May 28, 2003 4:03
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [load balancing]
persistance and L7 content switching conflict</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN class=568490107-28052003><FONT face=Arial color=#0000ff
size=2>Hi,</FONT></SPAN></DIV>
<DIV><SPAN class=568490107-28052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=568490107-28052003><FONT face=Arial color=#0000ff
size=2>What version of code are you running on your 180e? There were some
issues with L7 and persistency to do with HTTP1.1 that were broken in some
early versions of code.</FONT></SPAN></DIV>
<DIV><SPAN class=568490107-28052003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=568490107-28052003><FONT face=Arial color=#0000ff
size=2>Rich.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> Colm De
Barra [mailto:colm@aruke.com] <BR><B>Sent:</B> Tuesday, 27 May 2003 4:15
PM<BR><B>To:</B> <A
href="mailto:lb-l@vegan.net">lb-l@vegan.net</A><BR><B>Subject:</B> [load
balancing] persistance and L7 content switching
conflict<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Alright,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've started working with an alteon 180e
and I'm learning</FONT></DIV>
<DIV><FONT face=Arial size=2>as I go. I have two app servers between
which the alteon is </FONT></DIV>
<DIV><FONT face=Arial size=2>loadbalancing all http traffic. The websites
are session based</FONT></DIV>
<DIV><FONT face=Arial size=2>so I have enabled clientip persistance to
ensure that once a </FONT></DIV>
<DIV><FONT face=Arial size=2>client connects all their requests will go to
the same server.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Now the client wants to set up a series of
test pages on each </FONT></DIV>
<DIV><FONT face=Arial size=2>machine </FONT><FONT face=Arial size=2>which
will allow her to connect directly to the desired</FONT></DIV>
<DIV><FONT face=Arial size=2>machine and run some coldfusion db
connectivity tests. </FONT></DIV>
<DIV><FONT face=Arial size=2>The testpages have their own unique
directorynames depending on which</FONT></DIV>
<DIV><FONT face=Arial size=2>machine they're on, </FONT><FONT face=Arial
size=2>so I set it </FONT><FONT face=Arial size=2>up to do layer 7 content
switching based on </FONT></DIV>
<DIV><FONT face=Arial size=2>the url - it looks for the </FONT><FONT
face=Arial size=2>directory names in the URL - if it finds it, the request
</FONT></DIV>
<DIV><FONT face=Arial size=2>is forwarded to </FONT><FONT face=Arial
size=2>the appropriate machine. If it doesn't find it, it loadbalances
</FONT></DIV>
<DIV><FONT face=Arial size=2>the</FONT> <FONT face=Arial
size=2>request </FONT><FONT face=Arial size=2>as normal.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The only problem is that this doesn't work
with persistance enabled.</FONT></DIV>
<DIV><FONT face=Arial size=2>if you try to go to the two different
machines from the same clientip</FONT></DIV>
<DIV><FONT face=Arial size=2>then it doesn't work.</FONT></DIV>
<DIV><FONT face=Arial size=2>I'm going to look into different persistance
methods but I thought I'd check</FONT></DIV>
<DIV><FONT face=Arial size=2>here first if anyone knows a way around the
problem ??</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Cheers</FONT></DIV>
<DIV><FONT face=Arial size=2>Colm</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<BR>All
things are possible except skiing thru a revolving door.
<BR>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</FONT></DIV>
<DIV><FONT face=Arial size=2> My Website : <A
href="http://www.angelfire.com/ia/japan/">http://www.angelfire.com/ia/japan/</A><BR> \
BoomBox : <A
href="http://www.b00mb0x.org">http://www.b00mb0x.org</A> </FONT></DIV>
<DIV><FONT face=Arial
size=2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<BR></FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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