RE: [K12OSN] MtoolsFM question.
Flavio Veras (flaviove@trios.com)
Tue, 1 Oct 2002 08:31:03 -0400
Hi Everybody,
What about install ethereal (http://www.ethereal.com) on the server and
listen for clients dhcp solicitations?
Flavio Veras
-----Original Message-----
From: Bert Rolston [mailto:BertR@wanganui-city.school.nz]
Sent: Monday, September 30, 2002 5:42 PM
To: 'k12osn@redhat.com'
Subject: RE: [K12OSN] MtoolsFM question.
Hi Stephen,
> I will find out whether Webmin has been installed on TS
>
> But one thing I could not resolve. The clients are diskless workstation
> connected to TS via a hub. They have no name. Even if I can get a full
> list, how can I identify which is which.
No easy way, you have these options.
1) Open up every machine and get the MAC address off the network card. Not
all manufacturers do this.
2) Watch every machine boot up, the PXE / BootP sequence shows the MAC
address twice during bootup.
You have to be fast to get the information though.
3) Use Webmin on one of the terminals, list the leases, and note which IP
addresses have already been issued.
Start another terminal, refresh the lease list and check for a new IP
address.
Isolate the terminal server and terminals from the rest of the network
(if this won't cause problems).
Then you will only get the terminals showing up on DHCP.
Once you have this information it pays to get the MAC address off any new
terminals before they are installed.
============================
You may want to do this stuff before you start recording MAC addresses
1) Decide on a naming scheme for the terminals, this is useful for locating
a problem machine quickly.
Most people get confused if you ask them what the IP address of a
machine is. They will tell you things like
the brand name of computer, the brand name of the monitor, the model
number of the machine, rarely the actual address.
Do the machines have a name label on them? I have labelled all of my lab
machines using the following system
RoomNumber_xx eg. 64_01
This will help you to link the MAC address to the machine and location.
2) Create a terminal inventory sheet. This could record CPU, RAM, serial
number, video card and max resolution,
mouse and keyboard type, NIC type and mac address, and fixed IP
addresses.
Keep these records in a safe place. Use the information for creating
your, hosts file, tracking fixed IP addresses,
configuring DHCPd.
When a staff member tells you terminal XYZ is plzying up you will be
able to identify it quickly.
It isn't any easy job to start with.
Cheers,
Bert
> Thanks
>
> Stephen Liu
>
>
> At 04:00 PM 9/30/2002 +1200, Bert Rolston wrote:
> >Hi all,
> >
> >If you are using Webmin then you can get the client name, IP address, and
> >mac address from the DHCP server applet in Webmin.
> >
> >In Webmin go to Servers | DHCP | List active leases button.
> >
> >This will bring up a list of active IP leases, with host name and mac
address.
> >
> >Saves a lot of time and travel.
> >
> >Cheers,
> >Bert
> >
> >On Monday, September 30, 2002 2:31 PM, Stephen Liu
> >[SMTP:satimis@writeme.com] wrote:
> > > Hi Todd,
> > >
> > > Thanks for your further advice.
> > >
> > > At 01:07 PM 9/29/2002 -0400, you wrote:
> > >
> > > >- snip -
> > > >To find out a client's MAC address, first you need to figure out
which
> > > >workstation each client is. This is the letters "ws" followed by a
> > > >three-digit number. The easiest way I know to figure this out is to
> > log in
> > > >to a client and run the "who" command. It will list everyone who is
> > logged
> > > >in, and which workstation they're logged in from. (Obviously, it's
> > easiest
> > > >to do this if you're the only person logged on.) Once you know which
> > > >workstation you're logged into, run the command "arp 192.168.0.254".
This
> > > >will list all workstations logged in to your server and their
associated
> > > >MAC addresses. Repeat this procedure for each client you want to have
> > > >access to the floppy drive, writing down all their MAC addresses.
> > >
> > > From "network config" on client's machine, his MAC address can be
> > > found. But if there are 40 clients scattering on several floors,
looking
> > > at 15 selected clients' machines will take some time. Is there a
> > short-cut
> > > to do it from the ports of the hub?
> > >
> > > If I ask a funny question, please accept my apology.
> > >
> > > Thanks
> > >
> > > Stephen
> > >
> > >
> > >
> > > >Then, below your [Default] setup in lts.conf, add each of the MAC
> > > >addresses and the line
> > > >RCFILE_01 = floppyd
> > > >as suggested above.
> > >
> > > - snip -
>
>
>
>
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