Until recently, I had a 32-bit machine with one monitor running fedora. The later editions of fedora didn't like it, so I switched to CentOS. Now I have two 64-bit machines and two monitors and a CenturyLink router. Also a KVM switch that I have not taken out of the package. My main machine has two video connections and two ethernet connections, eth0 and eth1 . I've never had more than one machine or more than one monitor before. I'd like to be able to use both monitors at once on my main machine. I'd like to be able to switch one monitor between machines without too much trouble. I'd rather not where the pins out. KVM will do this, right? KVM is transparent to the computer, right? My secondary machine sometimes runs Windows, so I'd like it not to have its own global IP address. My first thought would be to connect it directly to one of the ethernet ports on my main machine. How do I go about this? The answer I am expecting is one or more links to tutorials or the like. -- Michael hennebry at web.cs.ndsu.NoDak.edu "SCSI is NOT magic. There are *fundamental technical reasons* why it is necessary to sacrifice a young goat to your SCSI chain now and then." -- John Woods
On Tue, May 27, 2014 at 07:38:34PM -0500, Michael Hennebry wrote:> I'd like to be able to use both monitors at once on my main machine. > I'd like to be able to switch one monitor > between machines without too much trouble. > I'd rather not where the pins out.Do either of your new monitors have multiple inputs? If you're not needing the console of the second machine often, that might be the easiest approach. -- Matthew Miller mattdm at mattdm.org <http://mattdm.org/>
On 5/27/2014 5:38 PM, Michael Hennebry wrote:> Until recently, I had a 32-bit machine with one monitor running fedora. > The later editions of fedora didn't like it, so I switched to CentOS. > Now I have two 64-bit machines and two monitors and a CenturyLink router. > Also a KVM switch that I have not taken out of the package. > My main machine has two video connections > and two ethernet connections, eth0 and eth1 . > > I've never had more than one machine or more than one monitor before. > > I'd like to be able to use both monitors at once on my main machine. > I'd like to be able to switch one monitor > between machines without too much trouble. > I'd rather not where the pins out. > KVM will do this, right? > KVM is transparent to the computer, right? > My secondary machine sometimes runs Windows, > so I'd like it not to have its own global IP address. > My first thought would be to connect it directly > to one of the ethernet ports on my main machine. > > How do I go about this? > The answer I am expecting is one or more links to tutorials or the like.my 2 monitors each have several video inputs. both monitors are DVI to my main computer, and I recently plugged the 2nd monitor into another computer via VGA, so I could switch it using the front panel pushbutton on hte monitor. I used a seperate keyboard/mouse for that seperate computer. IF your monitor and computers use the same video connection as your KVM supports, then sure, you could put the KVM on one monitor, and switch it and the keyboard between the two computers, the other monitor would stay plugged into the one computer that has dual ouputs. now, about that networking thing. thats a whole different issue. plugging the 2nd computer into the 2nd port on the first computer will require the first computer to implement some form of network sharing and to configure a 2nd subnet address range on that 2nd port, something like 192.168.x.y. -- john r pierce 37N 122W somewhere on the middle of the left coast
On 05/27/2014 07:38 PM, Michael Hennebry wrote:> Until recently, I had a 32-bit machine with one monitor running fedora. > The later editions of fedora didn't like it, so I switched to CentOS. > Now I have two 64-bit machines and two monitors and a CenturyLink router. > Also a KVM switch that I have not taken out of the package. > My main machine has two video connections > and two ethernet connections, eth0 and eth1 . > > I've never had more than one machine or more than one monitor before. > > I'd like to be able to use both monitors at once on my main machine. > I'd like to be able to switch one monitor > between machines without too much trouble. > I'd rather not where the pins out. > KVM will do this, right? > KVM is transparent to the computer, right? > My secondary machine sometimes runs Windows, > so I'd like it not to have its own global IP address. > My first thought would be to connect it directly > to one of the ethernet ports on my main machine. > > How do I go about this? > The answer I am expecting is one or more links to tutorials or the like.I am not sure if it meets your requirements, but Synergy[1] is worth looking into. Synergy allows you to share a keyboard and mouse over the network. I am a Synergy junkie. I have three computers running 6 total monitors at work. Two computers running 4 monitors at home. One keyboard/mouse for each desk. Also, some KVMs are transparent to the machine. Others (typically cheaper ones) function much like manually plugging in and pulling out the cables. In such cases terminals may give you weird output as it discovers hardware and you might get the Windows ding when it looses connection/establishes a connection with the new hardware. Another potential problem I encountered last night is that Windows lost my second monitor when I resumed from sleep because I was using the second computer on the KVM when I resumed. It also might take a few seconds for the computer to detect the new hardware. And yes, KVM will do what you want it to (to some extent). I actually did this last night at work. However it wasn't as seamless as I wanted. When I had two computers up, I could only use the single monitor computer as that is where the keyboard and mouse were connected to. Using one computer with two monitors plus VirtualBox or the like is another option. Finally, I'd recomend purchasing a switch. It'll make your life easier and they are not expensive. Best Regards, -Stefan [1] http://synergy-project.org/
On 05/28/2014 03:27 PM, John R Pierce wrote:> On 5/28/2014 12:00 PM, Michael Hennebry wrote: >> I want the second computer to not have its own global IP address. >> It will at least occasionally run Windows. >> I'd prefer not to assume that Windows will >> not try to fetch an IP address behind my back. > what do you mean by 'global IP address' ?Choice of terminology is pretty important; Cisco's consistent (if a bit awkward) four-way terminology for NAT (inside local, inside global, outside local, outside global; see http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/4606-8.html) is pretty much the standard from a netadmin point of view. I'm thinking he means that he wants the Windows box to have an inside local address but no inside global address (meaning that in order to access the Internet the host to be accessed would have to either be proxied or have an outside local address (most consumer routers don't implement the outside half of the cisco quartet, but some do)). I have several machines here that have no inside global address and thus don't have routability to the internet (they're in a deny line of the NAT pool ACL).
On 05/29/2014 01:09 PM, Lamar Owen wrote:> Choice of terminology is pretty important; Cisco's consistent (if a > bit awkward) four-way terminology for NAT (inside local, inside > global, outside local, outside global;...See the Cisco whitepaper entitled "Enabling Enterprise Multihoming with Cisco IOS NAT" for a thorough treatment of all four varieties, as well as applications for the outside local addressing coupled with the Cisco DNS ALG.