RHEL 5.6 Network adapter configuration problem (unique)

Posted on 2011-09-15
Last Modified: 2012-05-12
I installed RHEL 5.6 on my system.  I am trying to configure the network adapter

I configured the network adapter through XWindows using
the following procedure:

    - Select DNS tab, enter the following:

      Hostname:         h_one
      Primary DNS:
      DNS Search path:  (Cant reveal this, but
                                      it always works in 
                                      previous installations)

    - Select Devices Tab, Choose your ethernet adapter, and
                      enter the following:
      Subnet Mask:
      Default Gateway:

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Then I deactivate and activate the adapter.  It comes up
correctly as active.

Then I CAN ping the adapter:from within the RHEL server terminal on XWindows:

PING ( 56(84) bytes of data
64 bytes from icmp_seq=1 ttl=64 time=0.027 ms
64 bytes from icmp_seq=2 ttl=64 time=0.027 ms

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Then I ping the DNS, but can not get to it

connect: Network is unreachable

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Nor can I get to common addresses on my network:

connect: Network is unreachable

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From my clients, I try to ping the new server, but get the following:

Pinging with 32 bytes of data:
Request timed out.

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Can anyone give me any advice on this.  What seems to be the problem ?
Question by:Los Angeles1
  • 2
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Expert Comment

ID: 36543826
Default Gateway:

Are you sure the default gateway is correct?

If the gateway ip is correct, then try to change the cable.

Author Comment

by:Los Angeles1
ID: 36544083
The default gateway is correct

Accepted Solution

jackiechen858 earned 500 total points
ID: 36544481
from a console, run "ifconfig" and post the result.
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LVL 68

Expert Comment

ID: 36544648
Are you sure that the other machines and the gateway use the same netmask


Author Closing Comment

by:Los Angeles1
ID: 36544859
The ifconfig did the trick.  I had transposed the mask and the gateway values

I can not ping out of the box, and can also putty in

LVL 68

Expert Comment

ID: 36544875
So the mask was the culprit?

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