Network setup problem with Redhat 6.1 -- "network unreachable"

Network setup problem with Redhat 6.1 -- "network unreachable"

Post by Hal Haye » Sun, 31 Dec 1899 09:00:00



I am having a problem getting my linux computer networked with my other
computers on my small network. While my other computers can ping each
other through tcp/ip, the linux box cannot ping the ip addresses of the
other computers, nor can they ping the linux box.

Setup:
    2 PCs running Win98
    1 PC running Redhat Linux 6.1
    Linux PC using LINKSYS EtherPCI LAN
    1 LINKSYS 5 port Hub
    file: conf.modules reads "alias eth0 ne2k-pci" (setup by Redhat
software upon discovering new hardware)

Symptoms:
1. Linux PC can ping itself, and it appears that the network card my be
setup properly (no error messages on loading).
2. When the Linux PC attempts to ping the other computers, it reports
that the network is unreachable.
3. The other computers can ping each other, but not the Linux PC.

Question:
1. How can I confirm that the Linux PC network setup is working from the
Linux box?
2. Should any computer that is setup for tcp/ip on the hub be able to
ping the other?
3. What is a good simple setup for IP addresses, DNS, etc.,  for a local
network?

----
Thanks, in advance.

-Hal

 
 
 

Network setup problem with Redhat 6.1 -- "network unreachable"

Post by Peter T. Breue » Sun, 31 Dec 1899 09:00:00


: 2. When the Linux PC attempts to ping the other computers, it reports
: that the network is unreachable.

Then they ARE unreachable. You don't have a route to them configured is
what that tells me, and the kernel knows it! Look at the output from
/sbin/route -n.

: 1. How can I confirm that the Linux PC network setup is working from the Linux box?

By looking. Please check out the NET-4-HOWTO.

Peter

 
 
 

Network setup problem with Redhat 6.1 -- "network unreachable"

Post by M. Buchenried » Sun, 31 Dec 1899 09:00:00


          ^^^^^^^^^^^^^^^^^^^
[...]

See other posting.

>----
>Thanks, in advance.
>-Hal


^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Clever. Especially if taking into account that

a) this is the wrong way to do it;
b) your correct and complete email address is showing up in
   both the headers and the body of your own posting , anyways, and
c) you're making things worse by munging your address that way.

Michael
--

          Lumber Cartel Unit #456 (TINLC) & Official Netscum
    Note: If you want me to send you email, don't munge your address.

 
 
 

Network setup problem with Redhat 6.1 -- "network unreachable"

Post by M. Buchenried » Sun, 31 Dec 1899 09:00:00


[Note FollowUp-To: header]

[...]

Quote:>Symptoms:
>1. Linux PC can ping itself, and it appears that the network card my be
>setup properly (no error messages on loading).

That's not very helpful as far as error analysis is concerned.
Please post the output of "dmesg" , "ifconfig" and "route -n" .

Quote:>2. When the Linux PC attempts to ping the other computers, it reports
>that the network is unreachable.
>3. The other computers can ping each other, but not the Linux PC.
>Question:
>1. How can I confirm that the Linux PC network setup is working from the
>Linux box?

By checking the settings. See above.

Quote:>2. Should any computer that is setup for tcp/ip on the hub be able to
>ping the other?

Yes, as long as your cableing and your TCP/IP addressing scheme is
correct.

Quote:>3. What is a good simple setup for IP addresses, DNS, etc.,  for a local
>network?

[...]

192.168.0.0 network, no DNS but a hosts file .

You may want to read a good book about TCP/IP networking .

Michael
--

          Lumber Cartel Unit #456 (TINLC) & Official Netscum
    Note: If you want me to send you email, don't munge your address.

 
 
 

1. SMAIL problems: "lock failed", and "network is unreachable."

        Well, I got smail working so that it went through and delivered
all of the mail that wasn't delivered the last two months. Now I can't
send new mail to anyone. Here's a brief segment of what was in
/usr/spool/smail/logfile:



10/12/94 12:42:04: [m0qv6ke-0004mgC] received
|            from: mark
|         program: sendmail

|            size: 631 bytes

10/12/94 12:45:56: pid 253: new config files, exec(/usr/lib/sendmail)
10/12/94 12:45:56: pid 6860: smail daemon started
10/12/94 13:11:28: open_spool: /var/spool/smail/input/0qnI1X-0004o5C: lock failed: File exists
10/12/94 13:11:29: open_spool: /var/spool/smail/input/0qnI1X-0004o5C: lock failed: File exists
10/12/94 13:11:29: open_spool: /var/spool/smail/input/0qoews-0004oHC: lock failed: File exists
10/12/94 13:30:57: open_spool: /var/spool/smail/input/0qpm1L-0004oQC: lock failed: File exists
10/12/94 13:30:58: open_spool: /var/spool/smail/input/0qv6ke-0004mgC: lock failed: File exists

        I don't know if that help anyone or not. I'm running linux
1.1.45, and smail 3.1.28. My system is currently not connected to the
internet, though that shouldn't matter because I'm just trying to send
mail to myself.

        Anyone have any clues, or can point me into a direction to look?
If you need more information, email me.

        Much thanks.

        -Mark
--
"Key chuckles. 'If Skinny Puppy, in terms of the movie _Alien_, is a
chest-burster, then Doubting Thomas is more of a face-hugger,' he informs,
as if that were an explanation."
                                                        -Keyboard, Jan '92

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