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List: loadbalancing-l
Subject: RE: [load balancing] UDP fragmentation with AD4
From: "Giles Scott" <gscott2 () nortelnetworks ! com>
Date: 2003-02-12 0:17:50
[Download RAW message or body]
it should work...
can you send me directly a '/maint/tsdmp' and a packet trace from
client/server side (in libpcap format or snoop)
Cheers
Giles Scott
-----Original Message-----
From: Catalin Matei [mailto:catalin_matei_se@hotmail.com]
Sent: Tuesday, February 11, 2003 6:53 PM
To: lb-l@vegan.net
Subject: RE: [load balancing] UDP fragmentation with AD4
Hi,
the real servers are Sun E280 machines running Solaris 8 Regards, Catalin
Matei
>From: "Giles Scott" <gscott2@nortelnetworks.com>
>Reply-To: lb-l@vegan.net
>To: lb-l@vegan.net
>Subject: RE: [load balancing] UDP fragmentation with AD4
>Date: Sat, 8 Feb 2003 21:42:32 -0000
>
>Hi,
>
>WebOS 9.0.42.0 and above support 'correctly translating server side
>fragment's' with DAM enabled.
>
>To enable this feature, just ensure the switch is using the PBT table.
>
>Under '/st/sl/maint' there are additional statistics for fragment
>handling.
>
>
>Cheers
>
>Giles Scott
>
>
>From the releasenotes
>
>VERSION 9.0.42.0 Fixes and Enhancements [Maintenance Release Build]
>Bug: Q00246221 [Layer 4]
>
>IP fragments received on server port are not RIP -> VIP translated with
>DAM
>
>enabled. Add support for server side ip fragments. Also added MIB/WEBUI
>support for IP fragment maintenance stats.
>
>
>VERSION 9.0.41.7 Fixes and Enhancements [UNRELEASED VERSION]
>Bug: Q00417908 [Switch]
>
>Software builds now have the Client IP fragmentation support enabled.
>
>-----Original Message-----
>From: Catalin Matei [mailto:catalin_matei_se@hotmail.com]
>Sent: Saturday, February 08, 2003 3:56 PM
>To: lb-l@vegan.net
>Subject: [load balancing] UDP fragmentation with AD4
>
>
>
>....the previous message continues here...
>
>So, as a workarround I tried to enable filtering on one of the ports in
>order to bring the session table to PBT format which it did but it
>doesn't help; fragmented packets still arrive to client with the real
>server IP as source IP. And my question comes: there is any other way
>to get the UDP fragmentation to work except of disabling DAM(which in
>turn will force me to do redesign the whole switch config.. :-( )?!
>Will a forced port mapping help(i.e. make DAM not to change the ports)?!
>And
>BTW, the switch soft. rev. is 9.0.41.5 Thank you! Regards, Catalin
>
>
>
>
>
>
>
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<P><FONT SIZE=2>it should work...</FONT>
</P>
<P><FONT SIZE=2>can you send me directly a '/maint/tsdmp' and a packet trace from \
client/server side (in libpcap format or snoop)</FONT> </P>
<P><FONT SIZE=2>Cheers</FONT>
</P>
<P><FONT SIZE=2>Giles Scott</FONT>
</P>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Catalin Matei [<A \
HREF="mailto:catalin_matei_se@hotmail.com">mailto:catalin_matei_se@hotmail.com</A>] \
</FONT> <BR><FONT SIZE=2>Sent: Tuesday, February 11, 2003 6:53 PM</FONT>
<BR><FONT SIZE=2>To: lb-l@vegan.net</FONT>
<BR><FONT SIZE=2>Subject: RE: [load balancing] UDP fragmentation with AD4</FONT>
</P>
<BR>
<P><FONT SIZE=2>Hi,</FONT>
<BR><FONT SIZE=2>the real servers are Sun E280 machines running Solaris 8 Regards, \
Catalin Matei</FONT> </P>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<P><FONT SIZE=2>>From: "Giles Scott" \
<gscott2@nortelnetworks.com></FONT> <BR><FONT SIZE=2>>Reply-To: \
lb-l@vegan.net</FONT> <BR><FONT SIZE=2>>To: lb-l@vegan.net</FONT>
<BR><FONT SIZE=2>>Subject: RE: [load balancing] UDP fragmentation with AD4</FONT>
<BR><FONT SIZE=2>>Date: Sat, 8 Feb 2003 21:42:32 -0000</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Hi,</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>WebOS 9.0.42.0 and above support 'correctly translating server \
side </FONT> <BR><FONT SIZE=2>>fragment's' with DAM enabled.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>To enable this feature, just ensure the switch is using the PBT \
table.</FONT> <BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Under '/st/sl/maint' there are additional statistics for \
fragment </FONT> <BR><FONT SIZE=2>>handling.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Cheers</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Giles Scott</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>From the releasenotes</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>VERSION 9.0.42.0 Fixes and Enhancements [Maintenance Release \
Build]</FONT> <BR><FONT SIZE=2>>Bug: Q00246221 [Layer 4]</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>IP fragments received on server port are not RIP -> VIP \
translated with </FONT> <BR><FONT SIZE=2>>DAM</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>enabled. Add support for server side ip fragments. Also added \
MIB/WEBUI </FONT> <BR><FONT SIZE=2>>support for IP fragment maintenance \
stats.</FONT> <BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>VERSION 9.0.41.7 Fixes and Enhancements [UNRELEASED \
VERSION]</FONT> <BR><FONT SIZE=2>>Bug: Q00417908 [Switch]</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Software builds now have the Client IP fragmentation support \
enabled.</FONT> <BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>-----Original Message-----</FONT>
<BR><FONT SIZE=2>>From: Catalin Matei [<A \
HREF="mailto:catalin_matei_se@hotmail.com">mailto:catalin_matei_se@hotmail.com</A>]</FONT>
<BR><FONT SIZE=2>>Sent: Saturday, February 08, 2003 3:56 PM</FONT>
<BR><FONT SIZE=2>>To: lb-l@vegan.net</FONT>
<BR><FONT SIZE=2>>Subject: [load balancing] UDP fragmentation with AD4</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>....the previous message continues here...</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>So, as a workarround I tried to enable filtering on one of the \
ports in </FONT> <BR><FONT SIZE=2>>order to bring the session table to PBT format \
which it did but it </FONT> <BR><FONT SIZE=2>>doesn't help; fragmented packets \
still arrive to client with the real </FONT> <BR><FONT SIZE=2>>server IP as source \
IP. And my question comes: there is any other way </FONT> <BR><FONT \
SIZE=2>>to get the UDP fragmentation to work except of disabling DAM(which in \
</FONT> <BR><FONT SIZE=2>>turn will force me to do redesign the whole switch \
config.. :-( )?!</FONT> <BR><FONT SIZE=2>>Will a forced port mapping help(i.e. \
make DAM not to change the ports)?! </FONT> <BR><FONT SIZE=2>>And</FONT>
<BR><FONT SIZE=2>>BTW, the switch soft. rev. is 9.0.41.5 Thank you! Regards, \
Catalin</FONT> <BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>_________________________________________________________________</FONT>
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