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wdisp/HTTPS/sticky_mask - HTTPS: sticky mask for client IP addresses

wdisp/HTTPS/sticky_mask - HTTPS: sticky mask for client IP addresses

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| Parameter : wdisp/HTTPS/sticky_mask |
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| Short description : HTTPS: Sticky mask for client ip addresses |
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| Parameter Description : |
| ----------------------- |
| Note: This parameter is only required for HTTPS connections |
| This parameter has no meaning for HTTP connections! |
| |
| This parameter describes a bit mask for client IP addresses. |
| The IP address of a client that connects to the Web Dispatcher is |
| combined with this bit mask (AND) and the result is used for the |
| load balancing of clients. |
| In this way, groups of client IP addresses can be combined. |
| This function is required because large Internet providers use |
| multiple proxies (with different IP addresses, but the clients must |
| be handled in the same way (applications with a status in the |
| server). |
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| Application Area: SAP Web Dispatcher |
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| Unit : character string |
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| Default value : 255.255.240.0 |
| In this way the last 12 bits of the client IP address are no longer |
| significant (are not differentiated). |
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| Who is permitted to make changes: The customer |
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| Limitations for Operating Systems: None |
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| Limitations for Database Systems: None |
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| Other Parameters Affected or Dependent: |
| The size of the mapping table in memory is influenced by the |
| sticky mask. The more bits that are set to 0, the fewer different |
| client IP addresses must be administered: |
| If all bits are set, there can be 2^32 possible entries; if 12 |
| bits are 0, still 2^20: #Entries = 2^(32-#0bits). |
| The parameter %%wdisp/max_client_ip_entries%% specifies the size |
| of the table in memory. |
| |
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| Valid Input, Formats, Areas: |
| Character string with four numerical specification (0-255) that |
| are separated from each other with a full stop. No full stop and |
| no numerical value may be omitted. |
| Examples of correct values: 255.255.255.255 or 0.0.0.0 |
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| Short Description : HTTPS: sticky mask for client IP addresses
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| Applications Area : WebDisp
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| Parameter Type : S
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| Changes allowed : X
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| Valid for Operating System : *
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| Dynamic switchable :
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| Same on all Servers :
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