Hey all,

I tried the following combinations, of IPMP and Link Aggregation ( Nemo stuff ) 
.

With Cisco and Dlink managed Switches.

Some of these switches has facilities to arrgegate ports ( port aggregation ) 
on the switch, i used them, for no use.. Only one active port is selected at 
particular time, and in one of the parallel mode settings, Packet loss goes to 
an all time high of 43 % ... lol 

With Unmanaged Switch, where All NICs which are aggregated, are connected, Also 
does not work, and the aggregated link speed is same as a single one.


SO WHAT IS THAT WHICH WORKS . ...  :) ... here we go .. 

Consider that we have created an aggregated  link with three interfaces, and if 
we connect all three interfaces to a different unmanaged switch, and on the 
other end too, if each interface of an IPMP group are connected to one of these 
switches... 

Than we have  "Optimum outbound spread" and i reached a optimum outgoing 
traffic speed of 2.6 GBPS with 3 GBe intel ethernet cards. Also we have 
"Optimum Inbound Spread" and i achieved an inbound traffic speed of nearly 2.4 
GBPs on every aggregated link ( actually one aggregated link of 3 Nic's on two 
X64 Servers ).


This solution is beautiful, and now as even the PGR is on, i will be testing 
quorum and stuff with Solaris 10 and SC 3.2 . and also i am planning to start 
quorum server on the storage node, where IPMP is setup and add aditional quorum 
device to the cluster nodes.. 

If this works, believe me guys, we can have a optimum and "superb" performing / 
Tolarent and very cost effective "3" Node Sun CLuster.


I will keep you guys updated.


-- Chandan Maddanna
 
 
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