D-LINK DIR-651 ARP Issue

sixstorm1

Distinguished
Jun 23, 2013
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18,510
Hi,

Since upgrading my old D-Link DIR-615 router to the newer DIR-651 router, a particular host (SERVER01) becomes unreachable at random times. Upon rebooting the router, I am able to ping the host using its IP (192.168.0.100). But after 15-20 minutes, the host becomes unreachable from other LAN computers. I am unable to ping the host by its IP or Name. I am however able to ping the host through the router's ping utility (Tools -> System Check) page. Rebooting the router solves the problem, although only temporarily.

It seems like the router isn't propagating ARP reliably. This issue wasn't present with the old router and nothing has changed in the network configuration of other LAN computers.

Windows ping result:

Pinging 192.168.0.100 with 32 bytes of data:
Reply from 192.168.0.101: Destination host unreachable.
Reply from 192.168.0.101: Destination host unreachable.
Reply from 192.168.0.101: Destination host unreachable.
Reply from 192.168.0.101: Destination host unreachable.

Ping statistics for 192.168.0.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

D-Link ping result:

Ping address 192.168.0.100 success

Any idea what could be the problem?
Thanks!