network problem....

praveen_2003 · 10-13-2007, 02:44 AM

i have installed FC7 on my intel 965RY, 1gb, core 2 duo E6320, 80gb hdd...i have installed both windows xp and FC&.. i have configured my ethernet properly in FC7.. i am able to use internet in windows.. once i switch on my modem and once my link is up i wil be able to browse...router is in "link on power" configuration...i am able to activate the ethernet in linux but in browser if i open any website its not working... can any one pls help me out .. thans in advance...

Disillusionist · 10-13-2007, 03:51 AM

A couple of things to check:

Firstly, check that your modem is compatible with Fedora Core 7

Second gather the output from the following command from windows:

Code:

ipconfig /all

Compare this with the output from the following commands from Linux:

Code:

ifconfig eth0
netstat -r

praveen_2003 · 10-13-2007, 11:43 AM

windows ipconfig result:
Windows IP Configuration
Host Name . . . . . . . . . . . . : praveen-516d966
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) 82566DC Gigabit Network Connection
Physical Address. . . . . . . . . : 00-19-D1-0D-54-34
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.5
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 203.145.184.13
202.56.250.5

ifconfig eth0 result:
Link encap:Ethernet HWaddr 00:19

1:0D:54:34
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::219:d1ff:fe0d:5434/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:1015 (1015.0 b) TX bytes:6193 (6.0 KiB)
Base address:0x20c0 Memory:50300000-50320000

netstat result:
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

its the same i guess.. everythig is perfect... event then its nt wokng

Disillusionist · 10-13-2007, 12:08 PM

From a web browser (Firefox) try browsing to the following address:

http://212.58.227.74/

This should take you to the bbc.co.uk homepage

If this works then your problems are down to DNS.

Add the DNS Servers

203.145.184.13
202.56.250.5

praveen_2003 · 10-13-2007, 12:56 PM

When i open that ip address from firefox or konquer the title of the browser immediately changes to
“BBC-bbc.co.uk home page....” but after a while, say after 3 minutes the page gets completely loaded in konquer... but in firefox it says “looking up www.bbc.co.uk” and remains half loaded in the progress bar..now after 6 minutes the bbc page is loaded in firefox as well... if i run the same ipadress in windows it takes only 4 seconds or less for the page to load.. and no other wesites r opening except this ipadress...its so confusing... pls help me out.. whats going on??

Disillusionist · 10-14-2007, 02:51 AM

OK you need to add a reference to the DNS servers

203.145.184.13
202.56.250.5

If you have a graphical tool to configure your network connection, there should be a DNS section to add these ip addresses.

Alternatively modify the /etc/resolv.conf file to look like:

Code:

nameserver 203.145.184.13
nameserver 202.56.250.5

You will need to be root (or sudo) to edit this file.

Sorry for the delay in getting back, I was celebrating England getting into the Rugby World Cup final.

praveen_2003 · 10-14-2007, 12:40 PM

oh wow.... I have already specified the primary DNS and secondary DNS in the text box... n i also checked /etc/resolv.conf... the line u quoted was already there... but still the same issue.. should i reinstall the OS?? i am able to open my router configuration page from the firefox(192.168.1.1)... pls help me out...

Disillusionist · 10-15-2007, 02:50 AM

Last thing to check before I start running out of ideas.
Look at the /etc/nsswitch.conf file, should be something like:

Code:

# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

I wouldn't change the router configuration as this seems to be correctly configured.

Has this ever worked on this PC?
If not then reinstalling would probably only bring you back to this point.
If it was working, what has changed recently?

We are getting to the point where you are going to need to use a network analyzer e.g. ethereal

praveen_2003 · 10-15-2007, 01:07 PM

Thanks a lot for helping me.. but still the problem persists... When i had FC6 everything was fine.. but now i jus installed FC7..unfortunately this problem is jus disgusting.. so i think i have t try reinstalling the operating system and chk it out again.. wat say?? hmmm...

Disillusionist · 10-15-2007, 02:18 PM

When you moved to FC7, did you do a clean install or an upgrade?

It might be best (once you have backed up your data) to perform a clean install and go from there.

praveen_2003 · 10-15-2007, 08:35 PM

i did a clean install..n i never did upgrade in my lifetime

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