Re: IP addresses on local network change

2014-10-08 Thread Patrick O'Callaghan
On Wed, 2014-10-08 at 06:42 +0800, Ed Greshko wrote: > The analogy of the telephone number and extension is a good one. The > only thing I would add is that the extension (port/service) number is > generally fixed, standardized. > > A list is kept by the IANA (Internet Assigned Numbers Authority)

Re: IP addresses on local network change

2014-10-07 Thread Angelo Moreschini
Thank you to all Regards Angelo On Wed, Oct 8, 2014 at 1:42 AM, Ed Greshko wrote: > On 10/07/14 23:53, Angelo Moreschini wrote: > > thank you Ed, I learned many things from you. Actually I am a Linux > beginner > > Welcome to Linux. > > Mostly what has been discussed here is networking

Re: IP addresses on local network change

2014-10-07 Thread Ed Greshko
On 10/07/14 23:53, Angelo Moreschini wrote: > thank you Ed, I learned many things from you. Actually I am a Linux beginner > Welcome to Linux. Mostly what has been discussed here is networking concepts. The same applies to any network connected device just the location and way the conf

Re: IP addresses on local network change

2014-10-07 Thread Joe Zeff
On 10/07/2014 08:53 AM, Angelo Moreschini wrote: Just another question, if I can, please: it exists some fix relation between the "port number" of the servers and the theirs IP number ? No. Think of the IP as the machine's phone number, and the port number as a particular service's extension

Re: IP addresses on local network change

2014-10-07 Thread Angelo Moreschini
thank you Ed, I learned many things from you. Actually I am a Linux beginner Just another question, if I can, please: it exists some fix relation between the "port number" of the servers and the theirs IP number ? It is some kind of correlation between them ? On Tue, Oct 7, 2014 at 1:40

Re: IP addresses on local network change

2014-10-07 Thread Ed Greshko
On 10/07/14 16:43, Angelo Moreschini wrote: > I made it. > The optut was: > option dhcp-server-identifier 10.0.0.138; > option dhcp-server-identifier 10.0.0.138; > option dhcp-server-identifier 10.0.0.138; > option dhcp-server-identifier 10.0.0.138; > option dhcp-server-identifier 10.0.0

Re: IP addresses on local network change

2014-10-07 Thread Angelo Moreschini
I made it. The optut was: option dhcp-server-identifier 10.0.0.138; option dhcp-server-identifier 10.0.0.138; option dhcp-server-identifier 10.0.0.138; option dhcp-server-identifier 10.0.0.138; option dhcp-server-identifier 10.0.0.138; option dhcp-server-identifier 10.0.0.138; option

Re: IP addresses on local network change

2014-10-07 Thread Ed Greshko
On 10/07/14 15:47, Angelo Moreschini wrote: > for me the value is : > lf > /var/lib/NetworkManager/dhclient-40d1ee1f-f089-4c90-afd9-e37016bc720c-em0.lease > > but I don't know about what file are you talking ... cat /var/lib/NetworkManager/dhclient-40d1ee1f-f089-4c90-afd9-e37016bc720c-em0.lease

Re: IP addresses on local network change

2014-10-07 Thread Angelo Moreschini
for me the value is : lf /var/lib/NetworkManager/dhclient-40d1ee1f-f089-4c90-afd9-e37016bc720c-em0.lease but I don't know about what file are you talking ... thank you On Mon, Oct 6, 2014 at 4:22 PM, Ed Greshko wrote: > On 10/06/14 20:51, Dave Ihnat wrote: > > I would also wonder if there are

Re: IP addresses on local network change

2014-10-06 Thread Ed Greshko
On 10/06/14 20:51, Dave Ihnat wrote: > I would also wonder if there are dueling DHCP servers > on the segment. You should be able to determine if there are dueling DHCP servers by doing a "ps -eaf | grep dhclient" and looking for the -lf parameter and then examining the contents of the file. In

Re: IP addresses on local network change

2014-10-06 Thread Ralf Corsepius
On 10/06/2014 02:51 PM, Dave Ihnat wrote: On Mon, Oct 06, 2014 at 02:22:42PM +0200, Ralf Corsepius wrote: On 10/06/2014 01:02 PM, Angelo Moreschini wrote: That's not unusual with DHCP. DHCP assigned IP-addresses usually have limited life-time until they expire. After expiration machines may be a

Re: IP addresses on local network change

2014-10-06 Thread Dave Ihnat
On Mon, Oct 06, 2014 at 02:22:42PM +0200, Ralf Corsepius wrote: > On 10/06/2014 01:02 PM, Angelo Moreschini wrote: > That's not unusual with DHCP. DHCP assigned IP-addresses usually > have limited life-time until they expire. After expiration machines > may be assigned a new IP-address. However, I

Re: IP addresses on local network change

2014-10-06 Thread Ralf Corsepius
On 10/06/2014 01:02 PM, Angelo Moreschini wrote: Hi, I can only think that all can be correlated tothe dynamic assignmentof the IP address (DHCP), My guess would be the same. but the change of the IP happen also if the computers are not rebooted. That's not unusual with DHCP. DHCP assigned

IP addresses on local network change

2014-10-06 Thread Angelo Moreschini
Hi, I am newbie to Fedora and I would like ask for a (for me important) clarification regarding the assignment of the IP address of the computers of my LAN. Having problems to access to a repository located on another computer on my LAN, I used, several times, the ping command to check the acces