On Wed, 29 Dec 2004 00:04:43 -0800, Kam Leo <kam.leo@xxxxxxxxx> wrote: > On Tue, 28 Dec 2004 23:53:58 -0800, Kam Leo <kam.leo@xxxxxxxxx> wrote: > > On Wed, 29 Dec 2004 01:10:53 -0600, Christopher J. Bottaro > > <cjbottaro@xxxxxxxxxxxxxxxxxxxx> wrote: > > > Jason Powers wrote: > > > > > > > Is your router also handing out the hostnames? In that case, can it be > > > > activated as a DNS? I usually recommend the common cheesy blue linksys > > > > routers to my users, and I know they can do that, I assume others can. > > > > > > > > The host map or host table (DNS) is like the White Pages, it's what your > > > > computer uses to look up IPs for hostnames and hostnames for IPs. > > > > > > > > The DNS your ISP hands you is their copy of the public one, but you are > > > > running a local domain (the 192.168.1.x subnet) which their server will > > > > not have - your internal hostnames are not listed in their phone book, > > > > and won't be. > > > > > > > > Normal DHCP config hands out DNS as well as IP, so the router gets it > > > > from your ISP and gives it to the machines. Most routers will let you > > > > use them as a DNS, so you can tell it to keep a table and then append > > > > the router as one of the DNS it assigns to your linux boxes. > > > > > > > > You'll probably want to look up the configuration process in the > > > > instruction manual BEFORE you try to set it, because if you make a > > > > mistake you won't be able to see the internet until you fix it, so > > > > download the documentation now if you don't have the booklet. > > > > > > > > Alternatively you can alter one of the machines to be a DNS but then you > > > > have to assign it manually in the other machine or in the router, it's > > > > easier if there are only 2 or 3 machines to use the router if it is > > > > capable. > > > > > > > > While you're in the router, change its internal address to 192.168.1.100 > > > > and have it assign IPs starting with .101, .102, etc. leaving it at .1 > > > > is not as bad as keeping the factory default password, but it's still > > > > asking for trouble. > > > > > > > > Jason > > > > > > > > Christopher J. Bottaro wrote: > > > >> Simple setup. I have a router that assigns IP addresses by DHCP. I have > > > >> two linux machines: compa and compb which get their IP addresses using > > > >> DHCP with the router. From compa, I want to be able to say "ping compb" > > > >> instead of having to use ifconfig on compb to figure out what its IP > > > >> address is, then ping it (i.e. "ping 192.168.1.3"). > > > >> > > > >> How is this possible? Manually editing the /etc/hosts file doesn't work > > > >> because the IP addresses can change at boot (or whenever DHCP is used to > > > >> get a new address). > > > >> > > > >> Thanks. > > > > > > Thanks for the great reply. I have a couple of problems though... > > > > > > It seems my router does what I want (I think). It it setup as a DHCP > > > server. I have 3 computers: > > > semaphore (linux) > > > mutex (winxp) > > > mobile (linux, wireless) > > > When I go to "connected devices" in my router setup, I see 3 entries: > > > --- 192.168.1.100 > > > SEMAPHORE 192.168.1.101 > > > --- 192.168.1.102 > > > Problem number 1: Why isn't mutex and mobile giving their hostnames to the > > > router? > > > Problem number 2: "ping semaphore" from mutex (the winxp machine) works, > > > but "ping semaphore" from mobile gives me "unknown host". What is up with > > > that? Why can the win32 machine resolve semaphore properly and the linux > > > machine doesn't? > > > > > > Its a Netgear WGR614v5 router, btw. > > > > > > Thanks for the help, I can't wait to get this problem licked...I've been > > > wanting to solve it for a long time. > > > > > > > Verify following are in /etc/sysconfig/network in each of your linux boxes: > > > > # /etc/sysconfig/network > > NETWORKING=yes > > HOSTNAME=hostname_of_your_system > > > > I forgot to mention that you should also verify in /etc/hosts that you > have the hostname as an alias for address 127.0.0.1 . > It's getting really late and I'm not thinking as clearly as I should. Need to get to bed. You also need to check /etc/sysconfig/network-scripts/ifcfg-eth0. Change eth0 to eth1 or whatever your network connection to dhcp is. #/etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=dhcp ONBOOT=yes TYPE=Ethernet DHCP_HOSTNAME=hostname_of_your_system DHCP_HOSTNAME should be there. If not add it. This should do the trick. I believe that DHCP_NAME is set up by kudzu when you do your install of Fedora; however, the setup is easy to miss. > > Get your router to refresh its status and see if the names appear. > > > > -- Kam Leo
