Eliezer Croitoru wrote: > Then now I am a bit confused. > You wrote that the router has a slight problem. > > The router can be the CentOS machine or the WRT54GL, choose please I would not refer to a computer as a router just because it is running dhcpd. I was referring to the WRT54GL, as I think was obvious since I said "my WRT54GL router". The problem with this device is that it sometimes loses WiFi connection. Many other people with this router have said the same thing. > Where do you have the issue?? > - - on machines behind the WRT54GL? > - - on the CentOS server? On the laptops and other devices (camera, TV, smart phones) behind the router. The CentOS server continues to work. And I can access the router web-page from the server. That is why I was asking if there is any way of getting the server to "wake up" the router. > What ping has to say about the status of the connection between the > WIFI clients and the server? and the WRT54GL? Actually, I can still ping the router (from the server) even when it has lost WiFi connection. > Since the three dhcpd\network\shorewall do resolve the issues it can > be more then one problem. The problem is in the router. Everything else works fine. Also the problem is easily solved by disconnecting and re-connecting the router. The difficulty with this is that the machine is in another country. > I would also look at the basic system logs to see if there are any > hints about the issue. There is nothing relevant in /var/log/messages on the server. On laptops and phones there are the messages one would expect - eg NetworkManager says at great length that it has lost connection. > I had a similar issue with a CentOS 6 not long ago and the NIC was > going up and down. > When I replaced to newer kernel it got fixed. > (tested couple times over a very long period) > > What nic are you using there? Is there any switch over there between > the WRT54GL and the Server? The server is an HP MicroServer, The ethernet card on the router link is Broadcom NetXtreme BCM5723 (according to lspci). -- Timothy Murphy e-mail: gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin 2, Ireland