Re: How to reach a computer by hostname on a LAN?

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Kam Leo wrote:
>> > On Wed, 29 Dec 2004 01:10:53 -0600, Christopher J. Bottaro
>> > > 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
> 

[root@mobile ~]# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=mobile

[root@mobile ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1       mobile  localhost.localdomain   localhost

[root@mobile ~]# cat /etc/sysconfig/network-scripts/ifcfg-wlcjb
# Please read /usr/share/doc/initscripts-*/sysconfig.txt
# for the documentation of these parameters.
IPV6INIT=no
ONBOOT=no
USERCTL=yes
PEERDNS=yes
GATEWAY=
TYPE=Wireless
DEVICE=eth1
HWADDR=
BOOTPROTO=dhcp
NETMASK=
DHCP_HOSTNAME=mobile
IPADDR=
DOMAIN=
ESSID=CJB
CHANNEL=1
MODE=Managed
RATE=Auto

I even reserved an local IP address for it in my router setup, *giving* it
the device name as "mobile".  Still, when I ifup that device, it's name
comes up blank in my router's "connected devices" tab (it *is* there, it
just doesn't have a name associated with it).

Any ideas on my second problem?  My other machine's name, semaphore, does
show up in my router's "connected devices" tab.  I can "ping semaphore"
from my windows box, but from my other linux box:
[root@mobile ~]# ping semaphore
ping: unknown host semaphore

Thanks again for the help, I really appreciate it.


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