hwArpLinkDetectTimes 1.3.6.1.4.1.2011.5.25.123.1.15.1.13

After the max detecting times for ARP packet is sent to, and there is not any response, the sender can judge the peer interface is down. Then, setting the status of current interface down. The valid range is from 1 to 10, and the default value is 3.