R3721-F3210-F3171-HP High-End Firewalls Access Control Configuration Guide-6PW101

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Configuration guidelines
When you configure session management, follow these guidelines:
If the number of sessions is too large, for example, more than 800,000 sessions, you are not
recommended to set small values for aging times of the protocol states and application layer
protocols. Otherwise, the responses of the console will be slow.
Only TCP sessions in ESTABLISHED state can be specified as persistent sessions.