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Linux WS9 can't connect to the Internet.

Posted on 2004-10-28
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Last Modified: 2013-12-15
Hail and well met, I have a linux problem. I just recently moved office. Everything is up and running except for our Linux box. Linux WS9. I appologies now for my lack of knoledge in Linux. We use a static IP (Which works when inputed in a windows box) but I cant seem to get the Linux box back online.

I did some reading and I was asked to do a ipconfig (ifconfig), I did and it seems like its up, I see a UP BROADCAST in there. I have looked at the DNS entry and it is correct, basically no settings were changed since the move and the ISP didnt change anything so in theory I should be up and running.

Cant Ping or tracert

Can ping 172.0.0.1 and the static IP the box is using.

Please help, im loosing my mind :)


Best Regards

Chinawhite
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Comment
Question by:chinaw
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13 Comments
 
LVL 6

Expert Comment

by:blkline
ID: 12439363
Reboot the machine, then post the results of the following commands (as root):

route -n
ifconfig
cat /etc/sysconfig/network
cat /etc/sysconfig/ifcfg-eth0
cat /etc/hosts
cat /etc/resolv.conf

0
 
LVL 6

Expert Comment

by:blkline
ID: 12439391
Sorry, this one:

cat /etc/sysconfig/ifcfg-eth0

should read:

cat /etc/sysconfig/network-scripts/ifcfg-eth0
0
 

Author Comment

by:chinaw
ID: 12439593
Dear blkline

1. route -n
2. ifconfig
3. cat /etc/sysconfig/network
4. cat /etc/sysconfig/ifcfg-eth0
5. cat /etc/hosts
6. cat /etc/resolv.conf


1.
Kernel IP Routing Table
Destination          Gateway          Genmask            Flags   Metric   Ref     Use   Iface
xx.xxx.xxx.xx        0.0.0.0            xxx.xxx.xxx.xxx    U         0          0           0   eth0
169.254.0.0         0.0.0.0            255.255.0.0        U         0          0           0   eth0

2.
eth0       Link encap:Ethernet    HWaddr  00:06:5B:DD:1E:97
             inet addr:xx.xxx.xxx.xxx   Bcast:xx.xxx.xxx.xxx   Mask:xxx.xxx.xxx.xxx
             UP BROADCAST RUNNING MULTICAST  MTU:1500   Metric:1
             RX packets:551 errors:0 dropped:0 overruns:1 frame:0
             TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000
             RX bytes:42397 (41.4kb)   TX bytes:7447  (7.2kb)
             Interrupt:11 Base address:0xdc80

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:661 errors:0 dropped:0 overruns:0 frame:0
             TX packets:661 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:0
             RX bytes:64232 (62.7kb)   TX bytes:64232  (62.7kb)

3.
NETWORKING=yes
HOSTNAME=localhost.localdomain

4.
cat: /etc/sysconfig/ifcfg-eth0/; No such file or directory

5.
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1         localhost.localdomain      localhost

6.
search localdomain
nameserver xx.xxx.xx.xx
nameserver xx.xx.xxx.xxx

(Sorry to keep some numbers from you, i hope i dont offend. Where the "x" are the correct numbers as per the spec sheet from the ISP.)



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LVL 6

Expert Comment

by:blkline
ID: 12439767
You're missing a gateway entry:

route add default gw xxx.xxx.xxx.xxx

That needs to be added to:

/etc/sysconfig/network
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LVL 6

Accepted Solution

by:
blkline earned 2000 total points
ID: 12439770
Acutally, you'll add:

GATEWAY=xxx.xxx.xxx.xxx

to your /etc/sysconfig/network
0
 

Author Comment

by:chinaw
ID: 12439775
cat /etc/sysconfig/network-scripts/ifcfg-eth0

# 3com Corporation|3c905c-TX/TX-M [Tornado]
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:06:5b:dd:1e:97
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=no
NETMASK=xxx.xxx.xxx.xxx
IPADDR=xx.xxx.xxx.xxx
GATEWAY=xx.xxx.xxx.xxx
0
 
LVL 6

Expert Comment

by:blkline
ID: 12439780
and what I wanted to see is:

cat /etc/sysconfig/network-scripts/ifcfg-eth0

0
 

Author Comment

by:chinaw
ID: 12439965
added the GATEWAY=xx.xxx.xxx.xxx to the /etc/sysconfig/network and rebooted but still cannot connect.

I try to lo'g on to www.eperts-exchange.com and i get the follwoing message   "www.eperts-exchange.com could not be found. Please check the name and try again.

0
 
LVL 6

Expert Comment

by:blkline
ID: 12440046
what if you type:

route add default gw (your gateway address)

Then try again.   If it fails then please post:

route -n

Also, go to one of your windows boxes and at a command line type:

ipconfig /all

and post that.  I want to ensure that you are indeed using the correct address for the gateway.
0
 

Author Comment

by:chinaw
ID: 12440091
The gateway is 100% correct.

when i do route add default gw xx.xxx.xxx.xxx   it says  SIOCADDRT:  Network is unreacheable


when i do route -n

Kernel IP Routing Table
Destination          Gateway          Genmask            Flags   Metric   Ref     Use   Iface
xx.xxx.xxx.xx        0.0.0.0            xxx.xxx.xxx.xxx    U         0          0           0   eth0
169.254.0.0         0.0.0.0            255.255.0.0        U         0          0           0   eth0


0
 

Author Comment

by:chinaw
ID: 12440109
in network configuration i have 4 profiles. 1 is active and the rest are inactive. they have all the same settings. nicknames are eth0 (active) eth0/;1, eth0:2, eth0:3 (inactive)
0
 

Author Comment

by:chinaw
ID: 12440117
when i use text edit to edit the /etc/sysconfig/network in the open file window i see 2 network files, one is called network and the other is called network~
0
 
LVL 6

Expert Comment

by:blkline
ID: 12440591
The file with "~' at the end is a backup copy of the original.  Does network~ contain something other than network?

If it says "Network is unreachable" then the gateway is on another network.  I'm not sure I can help you unless you give me the more information about your network.  If you don't want to post them here then send them to my email address:

blkline at attglobal dot net

Run all of those commands I gave earlier and send them to me.  I'll post my comments back here but will sanitize the addresses in anything I post to here.

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