command to check whether session already reach the througput on ISG2000?

Hi all,

May i know what command that we can use to see whether the firewall session already reach the limit on ISG2000. For example the current ISG2000 always reboot due due to reach the maximum capicity. We need to swap this ISG to SRX5x series. But before we can propose it , we need to know the current session on the ISG2000.

Thanks and appreciate your feedback.