greetings all,

I am setting up a server on my network that is running Redhat, I have no experience with RedHat but have a little in FreeBSD.
The problem I am having is: On theserver I can ping 127.0.0.1 AND the IP that I gave it (itself)...but I can not ping the router (xxx.xxx.xxx.1) nor the nameserver (xxx.xxx.xxx.4) nor anything else .. (except itself) eth0 is up but I just cannot ping anything but 127.0.0.1 and thw ip address I gave it.
I can not ping the router, anything ON my network, anything outside my network.

Now..be nice I have no experience with RedHat.
If there is any other information you require, please let me know.

Thank you

well, that is interesting since I have precisely the opposite problem -- I can ping my router but not localhost or the IP I assigned to the network adapter.

And yet, my system works ...

Need more info silver. What is the output of ifconfig and what is the router gateway interface ip and subnet mask?

try using dhcpcd eth0 to try to connect to the router and
get an ip for itself rather than supplying it an ip yourself..

that might solve the issue of erroneous subnet parameters
etc.. but give that a shot and report what happens..

thanx

Thank you for the response
The output of ifconfig of course was quite long. Is there anyhting specifically I should look for?

It does see eth0
shows the inet address i gave it, the proper broadcast and netmask too (255.255.255.0)
It says:
UP BROADCAST RUNNING MULTICAST MTU: 1500 Metric: 1

It also sees lo the local loopback with inet addr 127.0.0.1

Thanks again.

Is your ip static or dynamic ?

sandy, thank you for responding

it is static

So whats the error message when you try to ping your router? network unreachable, unknown host etc

Does the router have active link lights and are they on for the ports that your PC's are plugged into?

Do the lights on the router or network card active lihts blink when you ping the router?

From the output of ifconfig are there any rx/tx errors? Any collisions?

I almost hate to say this, but have you checked your cable? Maybe tried a known good cable?

Hi,
I am facing the same problem....
able to ping myself but not the router...
it says network unreachable...
my IP is static...
the output of my ifconfig -a is.....

[root@localhost root]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:40:CA:BB:FC:A7
inet addr:172.16.56.16 Bcast:172.16.56.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:28 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:3788 (3.6 Kb) TX bytes:240 (240.0 b)
Interrupt:9 Base address:0x9000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:192 errors:0 dropped:0 overruns:0 frame:0
TX packets:192 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:15764 (15.3 Kb) TX bytes:15764 (15.3 Kb)



tell me what to do???????

ok I should have waited for you guys to respond....instead in all of my OCD based wisdom, I fiddled with netconf ..Now I can only ping 127.0.0.1 no longer the IP I assigned it.

camelrider
Cables...are good tried 3 all came off of working servers / in working ports.

michaelk
Now the message is "network unreachable" whenever I attempt to ping anything but 127.0.0.1
Prior to my insane fiddling I would get "destination host unreachable"

Network card light green router port light green Cables checked using one I know is good.

Replaced NIC with new one...was recognized by redhat and installed.... reason I replaced NIC was that this problem was there with old NIC. Everything looked OK so I changed NIC cards...problem still exists. Put card in different PCI Slot...just in case.

I also faced this problem some time before but solved that when i added mac address of my comp corresponding to my ip in the gateway, since your ip is static.

double check that the subnet mask is the same for all devices that you wish to communicate and that the corresponding ip's all fit within the network boundaries set by the mask.

Thank you for the responses.

sandy
Where and how did you do that? I'll try it.

osfestus
Done and subnetmask is ok and IP's fit within boundries

Thanks again..this is very perplexing and very frustratiing.

I have a really similar experience with Redhat 8.0 jusat recently and gave up. One minute the router and redhat were fine the next minute they lost contact completely/ Tried it static and dynamic. Hopeless.

Will watch with interest here!

slipsy