Alex: Created page with "Set TCP Keepalive time interval `TCPKEEPALIVE` is a parameter on `JANUS DEFINE`, which defines and sets characteristics of a Janus port. This parameter specifies the time interval in seconds between TCP keepalive packets sent on active connections to test if they are, in fact, still connected. `TCPKEEPALIVETIME` has no effect unless the TCPKEEPALIVE parameter is..."

2025-06-23T02:06:19Z

Created page with "<span class="pageSubtitle">Set TCP Keepalive time interval</span> <var>TCPKEEPALIVE</var> is a parameter on <var>JANUS DEFINE</var>, which defines and sets characteristics of a Janus port. This parameter specifies the time interval in seconds between TCP keepalive packets sent on active connections to test if they are, in fact, still connected. <var>TCPKEEPALIVETIME</var> has no effect unless the TCPKEEPALIVE parameter is..."

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<span class="pageSubtitle">Set TCP Keepalive time interval</span>

<var>TCPKEEPALIVE</var> is a parameter on <var>[[JANUS DEFINE]]</var>, which defines and sets characteristics of a Janus port.

This parameter specifies the time interval in seconds between TCP keepalive packets sent on active connections to test if they are, in fact, still connected.

<var>TCPKEEPALIVETIME</var> has no effect unless the [[TCPKEEPALIVE (JANUS DEFINE parameter)|TCPKEEPALIVE]] parameter is also set to enable TCP keepalives.

Since the TCP/IP stack does the keepalives, the overhead in <var class="product">Model 204</var> for setting this parameter is virtually zero.

If not set, or set to 0, and <var>TCPKEEPALIVE</var> the TCP stack's default keepalive intervale is used. This interval is usually 7200 (2 hours), a value so high that it renders TCP keepalives virtually useless.

This parameter is only available in <var class="product">Model 204</var> Version 8.0 and later.

<var>TCPKEEPALIVETIME</var> is valid for all port types.

==See also==
<ul>
<li>[[List of Janus commands]]
<li>[[JANUS DEFINE#parmlist|List of JANUS DEFINE parameters]]
</ul>

[[Category:JANUS DEFINE parameters|TCPKEEPALIVETIME]]

TCPKEEPALIVETIME (JANUS DEFINE parameter) - Revision history