1. Try to ping the device on your Network or PC

2. If you can ping the device it is communicating with your network

3. If the device does not ping, first make sure that components of your networ are not preventing communication. Such components might be your firewall, your gateway, or a conflicting subnet

If the default subnet of the device is different from the subnet of your network, this could prevent the device from communicating with your network.

To determine if this is the problem, answer these questions:

• Can the router ping other devices on the same subnet as your device?
• Can the router ping your device?
• Can the PC (not your devices' subnet) ping the router?
• Can the PC ping other devices on the same subnet as your device?

If you answered: 1. Yes, 2. No, 3. Yes, and 4.Yes
Because answer 2 was NO, the problem is that your device does not respond to the IP address

To configure a device with IP address of 4.5.6.7 and mac address of xx-xx-xx-xx-xx-xx do this:

FROM THE ROUTER:
router> en
router#conf t
router(config)#arp 4.5.6.7 xx-xx-xx-xx-xx-xx arpa
router(config)#^Z
ping 4.5.6.7
Type escape sequence to abort. (cntrl c)
Sending 5, 100-byte ICMP Echos to 4.5.6.7, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms <-
NOTE 100% success!
router#conf t
router(config)#no arp 4.5.6.7 xx-xx-xx-xx-xx-xx arpa
router(config)#^Z

Your device now has its IP address set. Try to ping it from the PC now.