Network prob

[murcel]

since some time, the network after reboot is not working corretcly, thoug i can access local hosts on either internal and external, i can not access internet. When i go to advanced/network and press update, all is working again....

can someone point me into the right direction?

[jimbodude]

Be more specific - what do you mean "cannot access internet"? 

Do you mean that you can't resolve hostnames? Try running
dig @127.0.0.1 www.google.com
to test hostname resolution.

Are you not getting an IP address assigned by DHCP?  Run ifconfig to check

Can you not ping your gateway?  Run ping {your gateway IP as it is in ifconfig}

Is your routing table correct? Run route -n

[murcel]

ok,

i can ping the external and internal interface
i can ping the internal devices by ip and dns
i can ping domains on the web and do a name resolution. tracert gives also valid answers.

if i put a domain in the web browser, it says "website found" but has a timeout after certain time. (only for external domains)

if i update the network settings through web admin, imm. it starts working

[pigdog]

Hi,

Your interfaces aren't swapped are they?  eth0/eth1?

Just throwing it out there!

[murcel]

no they are not

[totallymaxed]

ok,

i can ping the external and internal interface
i can ping the internal devices by ip and dns
i can ping domains on the web and do a name resolution. tracert gives also valid answers.

if i put a domain in the web browser, it says "website found" but has a timeout after certain time. (only for external domains)

if i update the network settings through web admin, imm. it starts working

It would be useful if you described your internal & external network topology and what each devices is and how it relates to the devices its attached to.

Some questions;
Can you boot an MD successfully on your LAN side NIC? If you attach another computer to your LAN side NIC does it get a valid DHCP address? Have you got a 2nd DHCP server on your LAN side?

All the best

Andrew

[murcel]

Dear Andrew,

thanks for your questions. Expect this, the whole lmce thing is working as expected.

every device gets his ip adress and also is booing up pxe.

[los93sol]

Stupid question, but have you restarted your cable/dsl modem since reconfiguring your network?  I've seen this in the past and it is required.

[murcel]

no i didn't......