On 25/06/2015 05:43, Bobbyville wrote:
I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt
firmware on it. Everything is working fine except two of the computers
on the network can't communicate with each other but they can both
communicate with other computers on the network. For example, I have 3
computers named Desktop, Lappy, and media-center. Media-center and Lappy
are both running Windows 8.1, and Desktop is running Windows 7. Before I
got the new router, all these computes could share files and remote
desktop just fine with each other. Now Desktop and media-center can't
communicate at all with each other (they can't ping each other, remote
desktop, or share files) but Lappy can communicate with both of these
computers just fine. Any ideas?

Have you manually set the IP address for any of these computers - or are
they all automatic via DHCP? What are the current IP addresses and
subnet masks for each of your 3 computers?
--
Cheers,
Roger
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