Expand Management Programming Manual

EVENT MANAGEMENT
47: ZEXP-EVT-NET-TIMEOUT
Probable Cause
A line handler did not receive an end-to-end acknowledgment from
the indicated system within the configured L4TIMEOUT time. The
line handler sent a request for the acknowledgment and again did
not receive it within the configured L4TIMEOUT time. The line
handler retried the request the number of times given by the
configured L4RETRIES value before this event message was issued.
The connection to the indicated system is lost. The NCP attempts
to reestablish the connection first over the same line and then
over another line, if one is available.
Recommended Action
Appropriate recovery actions depend on the cause of the failure
to acknowledge. For instance, if congestion in the network
is indicated, check the configuration to ensure that each line
handler has sufficient pool space. Check the statistics for
pool space usage in intermediate systems along the path, and
increase the configured pool space if necessary. Check for other
sources of congestion (such as high-speed incoming lines and low-
speed outgoing lines at a node), and reconfigure lines as needed.
Check LCB usage on intermediate systems, and increase the number
of LCBs or processors as needed. Ensure that configured L4
timeout values are large enough, and change them if necessary.
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