Hi.
I cannot ping any system and no system can ping me on my RHEL 4 AS. SElinux is disabled. No iptables rules are specified. Default installation. hosts.allow, deny are blank. System is HP-Compaq V50000 notebook. ifconfig shows my eth0 properly configured. mii-tool shows link ok.
Haven't seen anything like this before. Any pointers ?
Regards, NMK.
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On Friday 23 February 2007 11:43 PM, Nadeem M. Khan cobbled together some glyphs to say:
I cannot ping any system and no system can ping me on my RHEL 4 AS. SElinux is disabled. No iptables rules are specified. Default installation. hosts.allow, deny are blank. System is HP-Compaq V50000 notebook. ifconfig shows my eth0 properly configured. mii-tool shows link ok.
Do this as root - echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all
and then try pinging again.
Regards, BG
- -- Baishampayan Ghose b.ghose@ubuntu.com Ubuntu -- Linux for Human Beings http://www.ubuntu.com/
1024D/86361B74 BB2C E244 15AD 05C5 523A 90E7 4249 3494 8636 1B74
On 2/24/07, Baishampayan Ghose b.ghose@ubuntu.com wrote:
Do this as root - echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all
and then try pinging again.
Its contains a 0 already. Shucks!
Regards, NMK.
Nadeem M. Khan wrote:
I cannot ping any system and no system can ping me on my RHEL 4 AS. SElinux is disabled. No iptables rules are specified. Default installation. hosts.allow, deny are blank. System is HP-Compaq V50000 notebook. ifconfig shows my eth0 properly configured. mii-tool shows link ok.
Are you able to ping to other boxes? Are you able to access resources on that system, but not ping? More details would help.
Hi,
--- "Nadeem M. Khan" nadeem.m.khan@gmail.com wrote:
I cannot ping any system and no system can ping me on my RHEL 4 AS.
What hardware? Open a terminal and post output of:
/sbin/lsmod /sbin/ifconfig /sbin/route -n cat /etc/resolv.conf
Haven't seen anything like this before. Any pointers ?
Check cable?
SK
-- Shakthi Kannan http://www.shakthimaan.com
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Shakthi Kannan wrote:
Haven't seen anything like this before. Any pointers?
Check cable?
Very true. Another check, are other pcs firewalled? Is the multi-port switch bad? How does a testing cross cable respond with another pc/laptop back to back?
Regards,
Rony.
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On 2/24/07, Shakthi Kannan shakthimaan@yahoo.com wrote:
Hi,
--- "Nadeem M. Khan" nadeem.m.khan@gmail.com wrote:
I cannot ping any system and no system can ping me on my RHEL 4 AS.
What hardware? Open a terminal and post output of:
/sbin/lsmod
I can't copy paste the output since the notebook can't be brought in the network. But lspci shows my ethernet card all right.
/sbin/ifconfig
ifconfig shows my eth0 with the configured ip address.
/sbin/route -n
Shows my default gateway. No other routes configured.
cat /etc/resolv.conf
Not necessary here, since I can't ping any machine at all. DNS ofcourse won't resolve.
Haven't seen anything like this before. Any pointers ?
Check cable?
mii-tool shows link ok. Also cable is a known good one.
Regards, NMK.
On Sunday 25 February 2007 21:33, Nadeem M. Khan wrote:
On 2/24/07, Shakthi Kannan shakthimaan@yahoo.com wrote:
Hi,
--- "Nadeem M. Khan" nadeem.m.khan@gmail.com wrote:
I cannot ping any system and no system can ping me on my RHEL 4 AS.
What hardware? Open a terminal and post output of:
/sbin/lsmod
I can't copy paste the output since the notebook can't be brought in the network. But lspci shows my ethernet card all right.
/sbin/ifconfig
ifconfig shows my eth0 with the configured ip address.
/sbin/route -n
Shows my default gateway. No other routes configured.
cat /etc/resolv.conf
Not necessary here, since I can't ping any machine at all. DNS ofcourse won't resolve.
Haven't seen anything like this before. Any pointers ?
Check cable?
mii-tool shows link ok. Also cable is a known good one.
That leaves only the phy on the laptop. Check on another machine wether sent packets are recieved at all and vice versa.
Rgds JTD
On 2/26/07, jtd jtd@mtnl.net.in wrote:
That leaves only the phy on the laptop. Check on another machine wether sent packets are recieved at all and vice versa.
When I boot the lappy to windows, all is fine. I thought something would be wrong with the init scripts. So I booted into rescue mode, enabled networking, assigned the same ip address and tried to ping other hosts. No luck. Sheesh this is ridiculous. Syslog too refuses to help.
Looks like I have no option left but to reinstall. I opted for RHEL AS update 4 because it supports my SATA disk. I could downgrade to update 2 with native SATA support on my lappy turned off. Thats gonna be one helluva task....took me lots of pain to get oracle 9i up and running on this installation. :-(
Regards, NMK.
On 27/02/07 23:12 +0530, Nadeem M. Khan wrote:
On 2/26/07, jtd jtd@mtnl.net.in wrote:
That leaves only the phy on the laptop. Check on another machine wether sent packets are recieved at all and vice versa.
When I boot the lappy to windows, all is fine. I thought something would be wrong with the init scripts. So I booted into rescue mode, enabled networking, assigned the same ip address and tried to ping other hosts. No luck. Sheesh this is ridiculous. Syslog too refuses to help.
Which network card is this?
Devdas Bhagat
On 2/27/07, Nadeem M. Khan nadeem.m.khan@gmail.com wrote:
When I boot the lappy to windows, all is fine. I thought something would be wrong with the init scripts. So I booted into rescue mode, enabled networking, assigned the same ip address and tried to ping other hosts. No luck. Sheesh this is ridiculous. Syslog too refuses to help.
Is it just the ping or is it no networking at all? Is the netmask, ip address, etc correct? Are the machines you're trying to connect/ping from on the same subnet?
-
Baishampayan Ghose -
Devdas Bhagat -
jtd -
Nadeem M. Khan -
Rony -
Shakthi Kannan -
Siddhesh Poyarekar -
Vivek J. Patankar