wierd networking problem - please help

Hi,

I use redhat 9 and things were working quite fine until recently when
networking stopped working. I use dhclient to obtain IP and I see that
I am being assigned an IP address always. When I try to browse the
internet I get a default page from my ISP (verizon). When things are
fine I am just able to browse like normal.

This does not happen on Windows. I have printed out the traceroute to
www.google.com from both Windows and Redhat. Would appreciate any help
on this.

On Windows:

C:\>tracert www.google.com

Tracing route to www.google.akadns.net [216.239.37.99]
over a maximum of 30 hops:

1 1 ms 1 ms 1 ms 129.122.171.66.subscriber.vzavenue.net
[66.171.1
22.129]
2 18 ms 3 ms 3 ms 10.50.61.13
3 4 ms 3 ms 3 ms 241.2.171.66.subscriber.vzavenue.net
[66.171.2.2
41]
4 4 ms 3 ms 3 ms ge-5-0-522.hsa2.Newark1.Level3.net
[64.157.185.1
3]
5 4 ms 3 ms 3 ms so-10-2.ipcolo2.NewYork1.Level3.net
[209.244.13.
201]
6 4 ms 13 ms 4 ms ae-0-51.bbr1.NewYork1.Level3.net
[64.159.17.1]
7 39 ms 15 ms 21 ms as-3-0.bbr1.Washington1.Level3.net
[64.159.3.254
]
8 11 ms 10 ms 9 ms ge-7-1.ipcolo2.Washington1.Level3.net
[64.159.18
..68]
9 11 ms 12 ms 13 ms unknown.Level3.net [166.90.148.174]
10 15 ms 11 ms 13 ms 64.233.174.126
11 13 ms 13 ms 11 ms 216.239.48.94
12 17 ms 18 ms 10 ms 216.239.37.247
13 22 ms 14 ms 19 ms 216.239.37.99

Trace complete.

On redhat:
[root@localhost root]# traceroute www.google.com
traceroute to www.google.akadns.net (216.239.39.99), 30 hops max, 38
byte packet
s
1 129.122.171.66.subscriber.vzavenue.net (66.171.122.129) 1.000 ms
0.982 ms
1.095 ms
2 10.50.61.13 (10.50.61.13) 3.074 ms 8.423 ms 3.139 ms
3 * * *
4 * * *
5 * * *


Obviously it is not able to go beyond the second hop. Can anyone help
me on this one?

I am unable to browse by IP either.

Thanks!

Raj

Raj wrote:
> On Windows:
> C:\>tracert www.google.com
>
> Tracing route to www.google.akadns.net [216.239.37.99]
> over a maximum of 30 hops:
>
> 1 1 ms 1 ms 1 ms 129.122.171.66.subscriber.vzavenue.net
> [66.171.1
> 22.129]
[..]
> 13 22 ms 14 ms 19 ms 216.239.37.99
>
> Trace complete.
>
> On redhat:
> [root@localhost root]# traceroute www.google.com
> traceroute to www.google.akadns.net (216.239.39.99), 30 hops max, 38
> byte packet
> s
> 1 129.122.171.66.subscriber.vzavenue.net (66.171.122.129) 1.000 ms
> 0.982 ms
[..]
> 5 * * *
>
> Obviously it is not able to go beyond the second hop.

does `ping google.com' from linux works? I assume yes.

UNIX `traceroute' differs from MS `tracert':
`traceroute' sends UDP packets with increase TTL (time-to-liv) values to
the host.
`tracert' sends ICMP Echo Requests packets rather then UDP packets.

UPD packets are sometimes filtered, while ICMP not. So it does not
necessarily state anything about reaching a server.
Note that some site not reply to an ICMP Echo Request sent by `ping'
(eg. ibm.com). This due to decrease their network traffic.

On 20 Dec 2003 07:18:22 -0800, Raj wrote:
> On Windows:
>
> C:\>tracert www.google.com
>
<snipped good route>
> Trace complete.
>
> On redhat:
> [root@localhost root]# traceroute www.google.com
> traceroute to www.google.akadns.net (216.239.39.99), 30 hops max, 38
> byte packet
> s
> 1 129.122.171.66.subscriber.vzavenue.net (66.171.122.129) 1.000 ms
> 0.982 ms
> 1.095 ms
> 2 10.50.61.13 (10.50.61.13) 3.074 ms 8.423 ms 3.139 ms
> 3 * * *
> 4 * * *
> 5 * * *
>
>
> Obviously it is not able to go beyond the second hop. Can anyone help
> me on this one?

Try traceroute -I

> I am unable to browse by IP either.

Hmmm, I put 216.239.37.99 in Mozilla and hit google.com

Raj wrote:
> Hi,
>
> I use redhat 9 and things were working quite fine until recently when
> networking stopped working. I use dhclient to obtain IP and I see that
> I am being assigned an IP address always. When I try to browse the
> internet I get a default page from my ISP (verizon). When things are
> fine I am just able to browse like normal. [snip]

When you are running RH9 Linux (or MS Windows, for that matter), what is
the IP address of your network interface?

# Windows
> ipconfig

# RH9 Linux
$ /sbin/ifconfig -a

[FWIW, if you don't want to give out your full IP address, that's OK.
But if we can see the first two octets of the IP address on your RH9
Linux box, that might be a big help in diagnosing this problem. For
example, if the full IP address of your RH9 Linux box is "1.2.3.4", you
could tell us your IP address is "1.2.x.x" to keep the full IP address
unspecified. The goal here is to determine whether your RH9 box has an
IP address that is routable on the public Internet or not. For example,
"link local" IP addresses (169.254.x.x) are not routable on the public
Internet.]

--
Jim

To reply by email, remove "link" and change "now.here" to "yahoo"
jfischer_link5809{at}now.here.com

ping google.com did not work either. It just sat there and there was no response.

Thanks,
Rajiv


mgrd <(E-Mail Removed)> wrote in message news:<bs1qd0$8k5gd$(E-Mail Removed)>...
> Raj wrote:
> > On Windows:
> > C:\>tracert www.google.com
> >
> > Tracing route to www.google.akadns.net [216.239.37.99]
> > over a maximum of 30 hops:
> >
> > 1 1 ms 1 ms 1 ms 129.122.171.66.subscriber.vzavenue.net
> > [66.171.1
> > 22.129]
> [..]
> > 13 22 ms 14 ms 19 ms 216.239.37.99
> >
> > Trace complete.
> >
> > On redhat:
> > [root@localhost root]# traceroute www.google.com
> > traceroute to www.google.akadns.net (216.239.39.99), 30 hops max, 38
> > byte packet
> > s
> > 1 129.122.171.66.subscriber.vzavenue.net (66.171.122.129) 1.000 ms
> > 0.982 ms
> [..]
> > 5 * * *
> >
> > Obviously it is not able to go beyond the second hop.
>
> does `ping google.com' from linux works? I assume yes.
>
> UNIX `traceroute' differs from MS `tracert':
> `traceroute' sends UDP packets with increase TTL (time-to-liv) values to
> the host.
> `tracert' sends ICMP Echo Requests packets rather then UDP packets.
>
> UPD packets are sometimes filtered, while ICMP not. So it does not
> necessarily state anything about reaching a server.
> Note that some site not reply to an ICMP Echo Request sent by `ping'
> (eg. ibm.com). This due to decrease their network traffic.

The IP address is 66.171.X.X

Thanks,
Raj

Jim Fischer <(E-Mail Removed)> wrote in message news:<yo0Fb.2201$gD1.2096@fe01>...
> Raj wrote:
> > Hi,
> >
> > I use redhat 9 and things were working quite fine until recently when
> > networking stopped working. I use dhclient to obtain IP and I see that
> > I am being assigned an IP address always. When I try to browse the
> > internet I get a default page from my ISP (verizon). When things are
> > fine I am just able to browse like normal. [snip]
>
> When you are running RH9 Linux (or MS Windows, for that matter), what is
> the IP address of your network interface?
>
> # Windows
> > ipconfig
>
> # RH9 Linux
> $ /sbin/ifconfig -a
>
> [FWIW, if you don't want to give out your full IP address, that's OK.
> But if we can see the first two octets of the IP address on your RH9
> Linux box, that might be a big help in diagnosing this problem. For
> example, if the full IP address of your RH9 Linux box is "1.2.3.4", you
> could tell us your IP address is "1.2.x.x" to keep the full IP address
> unspecified. The goal here is to determine whether your RH9 box has an
> IP address that is routable on the public Internet or not. For example,
> "link local" IP addresses (169.254.x.x) are not routable on the public
> Internet.]

traceroute -I did not seem to yield any different results.

Thanks,
Raj

Bit Twister <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>...
> On 20 Dec 2003 07:18:22 -0800, Raj wrote:
> > On Windows:
> >
> > C:\>tracert www.google.com
> >
> <snipped good route>
> > Trace complete.
> >
> > On redhat:
> > [root@localhost root]# traceroute www.google.com
> > traceroute to www.google.akadns.net (216.239.39.99), 30 hops max, 38
> > byte packet
> > s
> > 1 129.122.171.66.subscriber.vzavenue.net (66.171.122.129) 1.000 ms
> > 0.982 ms
> > 1.095 ms
> > 2 10.50.61.13 (10.50.61.13) 3.074 ms 8.423 ms 3.139 ms
> > 3 * * *
> > 4 * * *
> > 5 * * *
> >
> >
> > Obviously it is not able to go beyond the second hop. Can anyone help
> > me on this one?
>
> Try traceroute -I
>
> > I am unable to browse by IP either.
>
> Hmmm, I put 216.239.37.99 in Mozilla and hit google.com

On Sat, 20 Dec 2003, Raj wrote:
>
> The IP address is 66.171.X.X

Your full IP is "NNTP-Posting-Host: 66.171.122.124", what's there to hide,
eh? )

V.

On 20 Dec 2003 15:01:03 -0800, Raj wrote:
> traceroute -I did not seem to yield any different results.

Check your settings (gateway, dns) against file found in
/var/lib/dhcp/dhclient-eth0.leases

(E-Mail Removed) (Raj) writes:

]traceroute -I did not seem to yield any different results.

]Thanks,
]Raj

]> On 20 Dec 2003 07:18:22 -0800, Raj wrote:
]> > On redhat:
]> > [root@localhost root]# traceroute www.google.com
]> > traceroute to www.google.akadns.net (216.239.39.99), 30 hops max, 38
]> > byte packet
]> > s
]> > 1 129.122.171.66.subscriber.vzavenue.net (66.171.122.129) 1.000 ms
]> > 0.982 ms
]> > 1.095 ms
]> > 2 10.50.61.13 (10.50.61.13) 3.074 ms 8.423 ms 3.139 ms
This is a reserved address which is unroutable. The machine must be
doing nat (Network address translation) and may be firewalled not to
allow certain outgoing connections (like the ping packets which
traceroute uses). note that the connection IS working since it managed
to resolve the name www.google.com

]> > 3 * * *
]> > 4 * * *
]> > 5 * * *
]> >
]> >
]> > Obviously it is not able to go beyond the second hop. Can anyone help
]> > me on this one?
]>
]> Try traceroute -I
]>
]> > I am unable to browse by IP either.

Meaning?