Cable Modem Setup - Can't seem to get a connection

[Tony Hammitt]

You appear to have a static IP address, dhcpcd and pump won't work.

In general, people normally set things up using subnet masks which
are consecutive ones, then zeroes (the RFC says to, in any case),
if your IP address is 24.183.100.120, a good guess at subnet mask
is 255.255.255.0 or 255.255.255.128.  I've normally seen that the
lowest address in the subnet is usually the gateway, in your case
24.183.100.1 .  If those don't work, I'm at a loss, too...

try:

ifconfig eth1 24.183.100.120
route add default gw 24.183.100.1 dev eth1

/etc/resolv.conf:

search home.com
nameserver 24.16.152.15
nameserver 24.16.152.17

Hope this helps,

Tony Hammitt

Gene and Amy Dascher wrote:
> 
> OK, here's the deal.  The comcast guys came out an looked things over,
> installed a new line in my computer room, and left me with the
> installation invoice.
> 
> I have tried everything under the sun (from a lot of different
> Cable-Modem how-to's, but I still can't get this thing working.)   Here
> is what is on the installation sheet:
> (Some numbers have been changed to keep them relatively secret)
> 
> DNS #: CJ123456-B
> IP ADDR: 24.183.100.120
> Prim DNS: 24.16.152.15
> Sec DNS: 24.16.152.17
> 
> There is no Gateway address listed, and there is no subnet mask listed.
> Here is a copy of my /etc/sysconfig/network-scripts/ifcfg-eth1 file:
> 
> DEVICE=eth1
> IPADDR=24.183.100.120
> NETMASK=255.255.255.0
> ONBOOT=yes
> BOOTPROTO=dhcp
> DHCP_HOSTNAME="cj123456-b"
> NETWORK=24.183.100.0
> BROADCAST=24.183.100.145
> 
> In my /sbin/ifup script, I have modified the pump line to read:
> if /sbin/pump -i eth1 -h cj123456-b ; then
> 
> Every time I try to run ifup eth1, I see the cable light blinking slowly
> on the modem, and the data light is blinking quickly, BUT it always ends
> up failing.
> 
> One thing that I haven't done is use the NIC that they gave me.  I
> already had a NIC that is a different brand in the PC.  I don't see how,
> but could that be a problem?
> 
> The cable modem that I have is a Toshiba PCX1100.
> 
> What am I missing, and where do I go from here.  I think I am going to
> write a VERY detailed How-To when this is all said and done.  There is
> something to be said for learning things the hard way, but this is
> rediculous.