03-23-2008 02:03 AM
Hi,
Recently we have upgraded our CSS from 11000 Series to 11503. I encounter an unusal problem with the HTTP to HTTPS redirection.
Total Servers to redirect for HTTP to HTTPS Service=>4
The round robin of the CSS 11503 will behave this way, Server1, Serve2, Server2, Server3..Server1...and so on....
and the total Service hit counts is not the same. It did not complete a rr cycle and there is repeat servers within a "cycle"
When I tried to input the same config of the services back to CSS11000 and it works fine: Server1, Server2, Server3, Server4, Server1....and so on (no repeat the rr work fine)
What could be the problem?
03-23-2008 02:04 PM
The 11500 is a multiprocessor architecture.
Each processor doing roundrobin indepently.
So, with a very low number of connections you can see uneven loadbalancing.
However, in a production network, with lots of connections, the difference should be very low.
Gilles.
03-23-2008 06:47 PM
Hi Gilles,
Thanks for the reply. That certainly helps to clear up the confusion.
Is there any way for me to verify the multiprocessor architecture on the CSS 11503?
Perhaps running some commands on CSS to show the number of processors? Or help to provide a link to the CSS data sheet or Specification which show this info?
03-24-2008 04:07 AM
you can do a 'flow stat' to see what traffic each processor handles.
There is a processor in each card you have in the CSS.
So, one in the SCP.
And if you have another module IO module, you also a processor there.
Traffic is splitted between the modules whatever the interface the come in.
Gilles.
05-05-2008 11:22 PM
We have 3 modules in CSS 11503,
1.SS5-SCM-2GE
2.CSS5-SAM
3.CSS5-IOM-8FE
Due to application requirement, we desperately need to load balance through Round Robin method and must be in order
s1->s2->s3->s1->s2->......and so on
and not s1->s1->s2->s3->s1->s2->s2...and so on
Is there a way to workaround or turn off this multiprocessor architecture? Perhaps configuration???
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