Re: VNC server stops responding after a few days
On 16/11/2011 22:56, Christopher Woods (CustomMade) wrote: Surely if a machine has a fixed static IP, it doesn't even enter into discussion with the network's DHCP server to request a lease? Just the usual broadcast traffic... I'm not a networking or Windows expert, but this presumably depends on whether the client (XP?) actually has the VNC server's IP address in its hosts file (something like C:\WINDOWS\system32\drivers\etc\hosts). If it doesn't, then it will send a request to get the address from the DHCP server. If the client ends up using the IP address supplied by the server, then it will eventually expire. I've had exactly this problem on another X server (not VNC). James: what's in your hosts file? And how does the client actually connect to the server? What's the VNC command line? ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
RE: VNC server stops responding after a few days
Chris: Again, I'm not a network guy, so YMMV. My experience has been that the computer with the static IP address in the DHCP range of the router will run with no immediate problems, but the DHCP server will eventually revoke the lease (because nobody asks for it to be renewed), then assign it to another computer. Duplicate IP addresses are never fun to debug! Thx, Phil Long -Original Message- From: vnc-list-boun...@realvnc.com [mailto:vnc-list-bounces@realvnc. com] On Behalf Of Christopher Woods (CustomMade) Sent: Wednesday, November 16, 2011 5:56 PM To: Long, Phillip GOSS; vnc-list@realvnc.com Subject: RE: VNC server stops responding after a few days Is your static IP address in the range of the router's DHCP addresses? That won't work, because the computer, knowing that it has a static IP, won't request a lease renewal, and after some maximum amount of time, the DHCP server will try to force one. What will happen in this case depends greatly on the software and OS the computer is running, and on the behavior of the router. I'm not a network guy, but I do know that unless your router is more sophisticated than the average small-office router, static IP addresses *MUST* be outside any range of DHCP addresses of your router. FWIW, I've experienced pretty much set-and-forget behaviour from soho / half-decent routers where you can assign a static IP and they'll respect the assignation (or in the cleverer routers, you can fix a static lease). My previous home Speedtouch TG585v7 could happily do this, as can the D-Link at work. (Tomato which I use at home on a WRT54GL these days just ... Works.) Surely if a machine has a fixed static IP, it doesn't even enter into discussion with the network's DHCP server to request a lease? Just the usual broadcast traffic... Goss ... Innovation for Business NOTICE: This e-mail and any attachment(s) may contain confidential and proprietary information of Goss International Corporation and/or its subsidiaries and may be legally privileged. This e-mail is intended solely for the addressee. If you are not the addressee, dissemination, copying or other use of this e-mail or any of its content is strictly prohibited and may be unlawful. If you are not the intended recipient please inform the sender immediately and destroy the e-mail and any copies. All liability for viruses is excluded to the fullest extent permitted by law. Any views expressed in this message are those of the individual sender. No contract may be construed by this e-mail. ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
Re: VNC server stops responding after a few days
The uncommented line in the hosts file is simply: 127.0.0.1 localhost The default gateway is setup in the Windows IP properties (along with the other static settings) to be 192.168.0.254, which is our modem/router/DHCP server. The modem has an external static IP that we would be connecting to with VNC. I can connect to it on that address and the internal 192.168.0.99 ... The command line on the VNC Viewer shortcut is just the default vncviewer.exe with no options. I just woke up one of the VNC servers/desktops that stopped working over the weekend. I opened the web browser and it took a bit to load; was it asking for an IP renewal? Maybe it's just the power saving options that are at fault: Turn off harddicks: 1hr Standby: 1hr Hibernate: never James Wheaton FloSource, Inc. Phone: 765.342.1360 Fax: 765.342.1361 Visit us on the web: www.flosource.com http://www.flosource.com On 11/18/2011 5:41 AM, Paul Dunn wrote: On 16/11/2011 22:56, Christopher Woods (CustomMade) wrote: Surely if a machine has a fixed static IP, it doesn't even enter into discussion with the network's DHCP server to request a lease? Just the usual broadcast traffic... I'm not a networking or Windows expert, but this presumably depends on whether the client (XP?) actually has the VNC server's IP address in its hosts file (something like C:\WINDOWS\system32\drivers\etc\hosts). If it doesn't, then it will send a request to get the address from the DHCP server. If the client ends up using the IP address supplied by the server, then it will eventually expire. I've had exactly this problem on another X server (not VNC). James: what's in your hosts file? And how does the client actually connect to the server? What's the VNC command line? ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
