performance on CSS11150?

[kope]

This content switch is currently doing load balance public web servers and proxy servers. We are enticipating to add SMTP server for load balancing also.

I did a "show system-resources", the cpu utilization is only 5%. Total memory is 256M, Free memory is 81 M.

Is this a good assumption that the content switch is capable handling the additional mail traffic load? (about 7000 Exchange Mail users). I need some opinion on this, Thanks.

[pradeepde · Accepted solution]

I think since the CPU utilization is only 5% and also there is enough free memory on the content switch, the device should be able to handle extra load. So you could try this out. But the CPU utilization of 5 is it always around the same 5 % level or does it increase at peak hours. You will have check on that.

[Gilles Dufour · Accepted solution]

The CPU is only being used if you use special rules that requires the CSS to analyze the content of the traffic.

In case of SMTP, I guess you only want to loadbalance based on ip addresses and tcp port.

In this case, everything is done in hardware.

so, what you have to look for is a 'flow stat' from llama/debug mode.

It will give you the number of flows you have in hardware.

If the hardware limit is exceeded, the traffic will be bumped to CPU and this is when you could get into trouble.

Regards,

Gilles.