This read-write INTEGER sets the number of seconds the ES/1 waits for an acknowledgment before retransmitting an unacknowledged TFTP data block during a configuration file transfer, defaulting to 5 seconds. An administrator raises this value when backing up or restoring configuration over a slower or higher-latency management link. For example, the admin raises swdisConfigRetryTime above the 5-second default when backing up config over a high-latency WAN link to the NMS.