dhcpc with AT&T @ home cable modem
Rupert M
I am running SCO OpenServer 5.0.5 Enterprise at home to expand my
understanding of SCO. I have installed TLS711, and installed and
relinked as shown in the README file that comes with that supplement.
I would appreciate some clarification of some of those instructions
that come with the supplement.
The last item in the README shows to make alterations to the /etc/tcp
file. I have added the network card in netconfig with the ip address
this machine will probably get from the at&t server. The "ifconfig"
line added in /etc/tcp and the "route add" line were #'d out, and I
added "/etc/dhcpc start" as proposed in the README. I am uncertain
if any other work needs to be done to this file, and also if "/etc/dcc
start" should be added instead of "/etc/dhcpc start" as proposed by a
trusted poster to the newsgroup.
the second to the last item in the README says to edit the
/etc/dhcpc.conf file "as needed." Currently I have the following
lines in this file not #'d out:
interface:net0
param_req;subnet_mask domain_name broadcast+address routers
dns_servers
param_req:hostname
command:y:/etc/dhcpc.d/route:
command:y:/etc/dhcpc.d/resolver:
When running /etc/dcc start or /etc/dhcpc start I get
dhcpc: No offers have been received
dhcpc: No offers have been received
dhcpc: No offers have been received
dhcpc: 3 attempts to get IP address have failed
chcpc: Exiting...shutdown interface net0
In addition, I am uncertain where my machine name should be listed.
My assigned machine name from att is c132176-c. uname -S will not
accept that name. When i added the nic card, i specified that name.
OSS600a and rs505a have both been added. This is a old Dell Dimension
P133 with 80 Meg Ram, a 3Com XL PCI 3C905 Nic card. The nic seems to
work as I see activity on the network hub and cable modem activity
light when the dhcpc starts during bootup.
Any help, guesses, good luck charms, or witchcraft will be greatly
appreciated.
mark
Jeff Liebermann
>>In addition, I am uncertain where my machine name should be listed.
>>My assigned machine name from att is c132176-c. uname -S will not
>>accept that name. When i added the nic card, i specified that name.
>
>Uname doesn't like it because it's more than 8 characters long.
I just knew that the 8 character system name would bite some day.
@Home requires that the host name be whatever they assign. See:
How to setup the BEFSR41 to work with your Cable Modem
using a dynamic IP address
http://www.linksys.com/support/kb.asp?kbid=112
for a hint. The reason for this is that the customer can supply their
own cable modem and router so tracking customer ID's by MAC address is
not feasable. So, they use the account number as the hostname. It also
supposidly prevents the customer from attaching more than one cable modem
as both will have the same hostname.
>At a wild guess, you might want to put "hostname:c132176-c" (on a
>line by itself) into your dhcpc.conf file. Perhaps the reason you're
>not getting responses to the queries is that the server wants you to
>identify yourself with that hostname. Worth a shot, anyway.
That will work. I've also tricked DHCP by adding an extra long system
name into the file:
/etc/systemid
However, that was a while back and I don't recall if there were any side
effects. I put the system name into /etc/systemid *TWICE* on two lines
as in:
c132176-c
c132176-c
However, methinks that the dhcpc.conf hostname tweak will be sufficient.
Also, don't forget to tweak the maximum receive window in
/etc/default/inet and /etc/tcp. I use 32768 for DSL and 65536 for Cable.
--
Jeff Liebermann je...@comix.santa-cruz.ca.us
150 Felker St #D Santa Cruz CA 95060
831-421-6491 pager 831-429-1240 fax
http://www.cruzio.com/~jeffl/sco/ SCO stuff
Evan Hunt
Don't blame me, I voted for Rupert M <del...@home.com>.
>I am running SCO OpenServer 5.0.5 Enterprise at home to expand my
>understanding of SCO.
Cool. When you understand the place, drop me a line and explain it to me. :)
>The last item in the README shows to make alterations to the /etc/tcp
>file. I have added the network card in netconfig with the ip address
>this machine will probably get from the at&t server. The "ifconfig"
>line added in /etc/tcp and the "route add" line were #'d out, and I
>added "/etc/dhcpc start" as proposed in the README. I am uncertain
>if any other work needs to be done to this file, and also if "/etc/dcc
>start" should be added instead of "/etc/dhcpc start" as proposed by a
>trusted poster to the newsgroup.
It should be "dcc start". I didn't realize I had "dhcpc start" in there.
Mea culpa.
>When running /etc/dcc start or /etc/dhcpc start I get
>
> dhcpc: No offers have been received
> dhcpc: No offers have been received
> dhcpc: No offers have been received
> dhcpc: 3 attempts to get IP address have failed
> chcpc: Exiting...shutdown interface net0
Are you sure you actually have a DHCP server on the other end of the
wire? What that's telling you is that nobody's answering the client's
queries.
You can get more details by running dhcpc in debug mode--I haven't got a
copy handy at the moment (I'm at home) but I think it'd be something
like "/etc/dhcpc -D 3"... I expect the result will be a lot of lines
that say the client is sending DHCPDISCOVER packets and not getting
anything back.
>In addition, I am uncertain where my machine name should be listed.
>My assigned machine name from att is c132176-c. uname -S will not
>accept that name. When i added the nic card, i specified that name.
Uname doesn't like it because it's more than 8 characters long.
At a wild guess, you might want to put "hostname:c132176-c" (on a
line by itself) into your dhcpc.conf file. Perhaps the reason you're
not getting responses to the queries is that the server wants you to
identify yourself with that hostname. Worth a shot, anyway.
--
Evan Hunt - evanh at sco dot com
"I have always wished my computer would be as easy to use as my telephone.
My wish has come true. I no longer know how to use my telephone."
- Bjarne Stroustrup