
Editing DLSw Parameters
114063 Rev. A 5-11
Parameter: Keepalive Time (sec)
Default: 60 (s)
Range: 0 to 2147483647
Function: Specifies the time interval after which the router sends a DLSw keepalive
message to inactive, established TCP connections to verify that the
connection is still available.
The keepalive time initiates standard TCP operation. TCP operation
determines the status of the TCP connection by receiving
acknowledgments for transmitted data. If TCP does not receive an
acknowledgment for this data after a series of retransmission attempts, it
assumes that either a link or remote router is down. TCP then reports this
condition to DLSw.
This process can take approximately 20 minutes with default
configurations. To decrease the notification time for a lost link or a remote
router, decrease the TCP Max Retransmission Timeout parameter value.
(Refer to Configuring IP Utilities for information on the Max
Retransmission Timeout parameter.)
We recommend that the keepalive time interval setting be 30 seconds or
greater. Since only one packet is sufficient to initiate the TCP
retransmission procedure, short intervals will use additional memory and
resources unnecessarily.
Instructions: Type the number of seconds that you want for the keepalive time interval,
or type a 0 to disable the keepalive feature.
MIB Object ID: 1.3.6.1.4.1.18.3.5.1.5.1.16
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