If you suspect a problem with the Serial-Ethernet device, follow the following simple steps to verify that the device you are trying to reach is the proper device and not another host on the network. This problem is very common, especially when fellow staff plug in their personal laptops using static IP Addresses belonging to an EtherPAD. Employing a SNMP manager/monitoring application may catch these duplicates before they cause major problems. Applications like HP Openview or Freshwater's Sitescope are among the many available.

Launch your command prompt and PING the IP address of your device. If no response is received, there may be a network disruption, a firewall may be in the way denying ICMP packets, or the device is offline (i.e. power outage). If your ping was successful, check the response time. High response times result in degraded data throughput through the Ethernet link.



The ping updates the PC's ARP (Address Resolution Protocol) table. Each IP address is linked to a MAC address. All SAN People devices' MAC addresses start with "0020B7". Verify that the IP address you are trying to reach does show a SAN People MAC address. The MAC address is printed on the device.



The EtherPAD Explorer utility may show you that the device is online, although the Test Connection may be unsuccessful. This is most likely due to another host on the network having the same IP address of the SAN People device. EtherPAD Explorer sends a broadcast to which the EtherPADs respond via their MAC Addresses.