Quick Answer
Calculate Firewall Session Table Capacity Planner for Stateful Inspection Workloads
Calculator
Result Interpretation
Firewall Session Table Capacity Planner for Stateful Inspection Workloads Calculator computes Planned Session Table Capacity in 1 using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Total Available Session Table Memory = 1073741824
- Maximum Session Setup/Tear-down Rate = 20000
- Per-Session Memory Overhead = 512
- Average Session Lifetime = 3600
Expected Result:
- Planned Session Table Capacity = 2097152
Engineering Interpretation:
Under the given input conditions, the calculated result is: Planned Session Table Capacity = 2097152.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
planned session table capacity = floor(min(total available session table memory / per-session memory overhead, maximum session setup/tear-down rate * average session lifetime))Formula family: formula_networking_firewall_session_table_capacity_planner_for_stateful_inspection_workloads
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| memory_capacity_bytes | Total Available Session Table Memory | INPUT | Total Available Session Table Memory |
| memory_per_session_byte | Per-Session Memory Overhead | INPUT | Per-Session Memory Overhead |
| cpu_sessions_per_second | Maximum Session Setup/Tear-down Rate | INPUT | Maximum Session Setup/Tear-down Rate |
| session_lifetime_seconds | Average Session Lifetime | INPUT | Average Session Lifetime |
| session_table_capacity | Planned Session Table Capacity | OUTPUT | Planned Session Table Capacity |
Calculation Steps
- Enter the total available session table memory in byte.
- Enter the per-session memory overhead in byte.
- Enter the maximum session setup/tear-down rate in 1/s.
- Enter the average session lifetime in s.
- Step 1: Compute planned session table capacity.
- Read the planned session table capacity (1) from the results.
Engineering Summary
Calculate Firewall Session Table Capacity Planner for Stateful Inspection Workloads
Frequently Asked Questions
What does this calculator calculate?
The Firewall Session Table Capacity Planner for Stateful Inspection Workloads Calculator estimates Planned Session Table Capacity based on the input parameters you provide
Why is total available session table memory important in this calculation?
total available session table memory is directly proportional to planned session table capacity. When you enter total available session table memory in byte, the calculator uses it in the engineering formula to compute the output
How should I interpret the result planned session table capacity?
The calculator outputs planned session table capacity. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Total Available Session Table Memory (byte), Per-Session Memory Overhead (byte), Maximum Session Setup/Tear-down Rate (1/s), Average Session Lifetime (s). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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