is/hostbuffer_timeout_invalid_entry SAP Parameter attribute - Set NI hostname buffer timeout for invalid entries (int. DNS cache)

is/hostbuffer_timeout_invalid_entry is a SAP Parameter attribute which is used to control Set NI hostname buffer timeout for invalid entries (int. DNS cache) information. This is available within R/3 SAP systems depending on the version and release level.

Below is the standard documentation available and a few details of the attributes values .

is/hostbuffer_timeout_invalid_entry profile paramerter attributes

Parameter Name: is/hostbuffer_timeout_invalid_entry
Description: Set NI hostname buffer timeout for invalid entries (int. DNS cache)
Default Value: 600
Parameter Type ( See IF_PARAMETER_TYPES): Integer range(INT_RANGE)
Restriction Values: 0 86400
Parameter Unit: sec
Parameter Group: System
CSN Component: BC-CST-NI
System-Wide parameter: No
Dynamic Parameter: No
Vector Parameter: No
Has Sub-Parameters: No
Check Function Exists: No

Parameter documentation

A function of the SAP Network Interface (NI) is the host name buffer, which acts as a cache for the mapping between host names and IP addresses. This includes forward lookups (host name to IP) and reverse lookups (IP to host name). Both valid entries, that is, previously successful queries to the operating system, and invalid entries, if queried again, are answered from this buffer. You can use the parameter is/hostbuffer_timeout_invalid_entry to define the period of time (in seconds) after which invalid entries (negative cache) are deleted from the cache. The value 0 deactivates the negative cache.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.