What does it all mean? Keepalive time is 7200 seconds, or 120 minutes (2 hours). cat /proc/sys/net/ipv4/tcp_keepalive_timeĬat /proc/sys/net/ipv4/tcp_keepalive_probesĬat /proc/sys/net/ipv4/tcp_keepalive_intvl Checking keepalive values in Linux. tcp_keepalive_intvl: controls the interval between sending keepalive probes on an idle TCP connection.Įach value is in seconds and can be easily checked with the commands below.It detects if the remote endpoint has become unreachable or the connection has been lost due to network issues. tcp_keepalive_probes: a small packet sent by a TCP endpoint to check the health and responsiveness of the remote endpoint in an idle connection.Keepalive probes check whether a remote peer is still alive and responsive, even when no data is being transferred.
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