RE: Oracle Compress Option

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Thu, 25 Sep 2003 11:34:44 -0800
Message-ID: <F001.005D1120.20030925113444@fatcity.com>

mucho gracias ...  

Raj

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Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-----Original Message-----
Sent: Thursday, September 25, 2003 3:20 PM To: Multiple recipients of list ORACLE-L  

What is 802.3ad link aggregation? Tell you what - buy the box and I'll tell ya how it works ;)  

Seriously, though, its a networking protocol for ethernet cards and ethernet switches to be aware of flow relationships - i.e. it makes the switches and hosts aware that the ethernet card attached to port 1 and the one attached to port 5 are actually part of the same node. So, nodes become aware of how to redirect traffic in case of a failure, as well as how to load balance  

AIX, right? Here's a link to IBM's discussion on it for the p-series:  

http://publib16.boulder.ibm.com/pseries/en_US/aixbman/commadmn/tcp_etherchan nel.htm
<http://publib16.boulder.ibm.com/pseries/en_US/aixbman/commadmn/tcp_ethercha
nnel.htm>  

Good luck,
Matt

--
Matthew Zito
GridApp Systems
Email: mzito_at_gridapp.com
Cell: 646-220-3551
Phone: 212-358-8211 x 359
http://www.gridapp.com <http://www.gridapp.com/>  

-----Original Message-----
Jamadagni, Rajendra
Sent: Thursday, September 25, 2003 2:40 PM
To: Multiple recipients of list ORACLE-L


Matt,
 
What is 802.3ad link aggregation ?? Any handy URLs ?? TIA
 
Raj
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Rajendra dot Jamadagni at nospamespn dot com 
All Views expressed in this email are strictly personal. 
QOTD: Any clod can have facts, having an opinion is an art ! 

-----Original Message-----
Sent: Thursday, September 25, 2003 1:25 PM
To: Multiple recipients of list ORACLE-L


 
On our appliance, to get around the irritating load-balancing+failover
issue, we're using 802.3ad link aggregation.  Trying to load-balance Gigabit
is really an exercise in futility - almost all of the performance
improvement comes from improved interrupt queuing (and even that is already
mitigated on the card through coalescing interrupts).  The real benefit is
the failover - that works very very well.
 
Thanks,
Matt







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Author: Jamadagni, Rajendra
  INET: Rajendra.Jamadagni_at_espn.com

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Received on Thu Sep 25 2003 - 14:34:44 CDT