Need help with TCP/IP on EtherNet.

Need help with TCP/IP on EtherNet.

Post by Robert L » Fri, 14 Apr 1995 04:00:00

Hi, I am new to unix and linux. I am trying to setup my linux box
(486DX2-66). I am using 3Com 3c509 Ethernet card.  The linux box is kernel
1.1.59 which is a CD version of linux plug and play.  When I boot up, the
linux kernel reconized the 3 com card and shows follows:

<6>eth0, 3c509 at 0x300 tag 1. BNC port, address 00 20 af 2f f6 f0, IRQ 10.

After I boot up, I setup the configure-network from control panel.  After I
entered the ip address for the eth0 device, I push the "Try Changes" key. I
always get an error as follows:
  Error:SIOCSIFFLAGS: Try again
  SIOCADDRT: Network is unreachable.

I have been spending too much time and bought the linux bible.  I still can
not figure it out.  Please help...

Here are my configuration:

ifconfig eth0
eth0     Link encap 10Mbps Ether HWaddress 00:20:af:2f:f6:f0
         inet addr Bcast Mask
         BROADCAST RUNNING MTU 1500 Metic 1
         RX packets 0 errors 0 dropped 0 overruns 0
         TX packets 0 errors 0 dropped 0 overruns 0
         Interrupt 10 Base address 0x300

Kernel routing table
Destination   Gateway     Genmask         Flags MSS  Window Use Iface
localhost     *  UH    1936 0      19  lo   *    U     1436 0       0  ether0

arp -a
Address      HW type          HW address          Flags  10Mbps Ethernet  00:20:af:2f:f6:f0   CMP

Whenever I ping to the "", I didn't get any response back.
However, if I play around with SLIP as following:
dip /etc/connection.dip
with the bougus phone number, I can able to ping the "" although
I could never connect to the other end.

Robert Lee
Apple Computer, Inc.

(408) 862-5389


1. Q. How to network with ethernet address only ( without TCP/IP protocol) - in ethernet.

Hi, all

I want to send a data to specific ethernet host which does not have IP
address ( without TCP/IP protocol). i.e, in MAC layer;

[preamble(7)][SFD(1)][destination address(6)][source
<fig. MAC Protocol Data Unit(IEEE802.3)>        (byte)

In above fig. , I only know destination address, source address & can
make type & data ..
I want to network with machine ( 6byte ethernet address is 00 00 00 00
00 0xA).
How to do?
& in data field (*), LLC Protocol Data Unit would be set. - I would use
ethertap module.
Is it possible?



2. DOSEMU: -10K XMS used?

3. Help on installation problem of Ethernet card/TCP IP set-up!

4. xrn for SCOODT

5. Req. help: TCP/IP suddenly goes down on ethernet network

6. Which config file sets the SHELL variable on boot up


8. dynamic linker broken?

9. SLS X wants tcp/ip, tcp/ip won't compile, what now?