Kevin Tyle wrote:
>
> Hi RH users,
>
> I have the need to use a 2nd ethernet card in one of my
> machines.
>
> The exsisting one, using interface eth0, is for my company's
> LAN.
>
> I want to interface the 2nd one with the ethernet port of
> a satellite data receiver from which I can read data.
>
> Both of the NICs are 3C905B cards.
>
> So here are my questions:
>
> 1. The satellite receiver runs only at 10-Base T. What would
> be the appropriate way to force the 2nd NIC into 10BaseT mode
> without having to use the 3COM DOS diskette? Are there
> some lines in my conf.modules I need to add?
>
You didn't give much info about how you're hooking this all up. Will
the office LAN and the link to the satellite RX be separate networks?
If so (and that's what I'd recommend), will you use a hub on the
satellite network or run it straight to your second nic (which requires
a crossover cable)? By 10Base-T mode do you mean 10MHz instead of
100MHz or do you refer to RJ45 connector (BaseT) vs. BNC (Base2) or
something else? (I don't know anything about the 905b other than that
it is 10/100.)
If you're using a second network with a hub you shouldn't have to do
much more than add a line to conf.modules for the second nic (alias eth1
3c905 or whatever), and then create a file
/etc/sysconfig/network-scripts/ifcfg-eth1 that has the info appropriate
for the second network. AFAIK most all 10/100 cards will automatically
adjust speed to whatever network they're on. Even if you don't use the
hub and go card to card I think everything above will work the same as
the 10/100 card should auto adjust to the 10Meg speed on the other card
(as far as I'm aware anyway - I know it will with a hub of about any
type).
If you're running it all on a single hub (two IP ranges on one line) I'm
not sure what the ramifications are - although I know extraneous traffic
is one. I suppose the same file setup would probably work.
> 2. The satellite machine is factory set to an IP address of
> 192.168.0.1. The documentation says to set the NIC to
> 192.168.0.2, subnet mask 255.255.255.0. Fine, I have done that
> with netcfg, but now I seem to have an "extra" gateway on eth0
> which I don't want:
>
> Kernel IP routing table
> Destination Gateway Genmask Flags MSS Window irtt Iface
> 192.168.0.2 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
> xx.yy.zz.4 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
> **38.248.19.0 router 255.255.255.0 UG 0 0 0 eth0**
> xx.yy.zz.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
> 192.168.0.0 192.168.0.1 255.255.255.0 UG 0 0 0 eth1
> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
> 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
> 0.0.0.0 router 0.0.0.0 UG 0 0 0 eth0
>
Don't you have two extra gateways here (I see three of them)? Gateways
are usually set in /etc/sysconfig/network. There will be
GATEWAY=w.x.y.z and GATEWAYDEV=eth?. I'm not sure where other entries
would come from unless linuxconf is inserting them.
Good Luck - hope it helps.
--
Mike Rambo
[EMAIL PROTECTED]
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