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Menus Reference Manual: Edit Remote Site - CMCP Parameters - IP Spoofing Menu
3 - TCP Retries
The TCP Retries option defines the number of unacknowledged fake TCP keepalive messages that this P1700 will send
before the TCP session is considered dead.
The TCP keepalive messages are used to determine if the station at the end of the TCP session is still alive.
Default:
[5]
Enter :
Number of retries (from 1 to 20)
>
4 - TCP Aging
The TCP Aging option defines the amount of idle time in seconds that the P1700 will wait before the TCP session is
aged out and considered dead. The aging timer starts counting when there is no session traffic.
The TCP aging timer can be used in conjunction with the IP address connect feature. When the TCP session traffic is
idle for a time longer than the inactivity timer, the link will be suspended. If the TCP session continues to be idle, the
aging timer will age out the session. Once all of the sessions are aged out, the link will be quietly taken from suspended
to down. This process allows the link to be available for use with another IP address connect request.
When a TCP session has been aged out and the P1700 then receives a TCP keepalive for that session, the link will be re-
established to send the keepalive. The link is re-established because the TCP keepalive messages are not easily
discernable from normal TCP session traffic. The TCP aging timer should be set to a value larger than the frequency of
TCP keepalive messages on the network. TCP keepalive messages can have intervals as long as 60 minutes.
The TCP keepalive messages are used to determine if the station at the end of the TCP session is still alive.
Default:
[7200 sec]
Enter :
time in seconds (from 60 to 604800), off
>
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