The RES_TIMEOUT and RES_RETRY parameters in the/etc/environmentfile are related to DNS resolution.RES_TIMEOUTsets the initial timeout period for DNS queries, andRES_RETRYspecifies the number of times to retry a query before giving up. By settingRES_TIMEOUT=1andRES_RETRY=1, the system will quickly failover to the secondary name server if the primary name server does not respond within one second, thus reducing the failover time.References: IBM AIX Documentation - /etc/environment
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