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 Get your router to refresh its status and see if the names appear. -- Kam Leo
