Need 2 NICs to get networking to work in Linux VM

[cgkades]

If I only have one network adapter set up for the guest Linux OS, then I cannot ping anything on my network. But if i give it 2, then disable one of the interfaces in Linux, i can ping. Any ideas?

[weinstein5]

Welcome to the COmmunity - Can you post a screen shot of how you have the network configured on your esxi host?

[cgkades]

Unfortinutatly I cannot. This is on a classified network. It's a standard switch: vSwitch0 the vm's are in a Virtual Machine Port Group VM Network. They all connect to the grey box (i'm guessing that's the virtual switch) which then connects to the physical adapter vmnic0 1000 full

[weinstein5]

Do both virtual NICs connect to the same virtual machine port group? If they do how is the networking configured within the Linux OS? I would look at the configuration inside the LInux OS -

[cgkades]

They are on the same port group. Bothe interfaces are configured EXACTLY the same.

I right click on the vm-> edit settings->then if there is only 1 Netwrok adapter in there, i cannot ping. if there are two, i can ping.

So this is what i just did. in the linux os. ping xxx.xxx.xxx.1 (router) i get Destination Host Unreachable. I edited the settings for the vm and added a new adapter. once it finished adding, i did eth1 up, then eth0 down. i configured the correct ip address that eth0 just had (same exact settings) then i pinged the router. and, no surprise... it worked. This is very very very odd. This is the same OS that i have installed on every other machine on our network, and none of them behave like this.

and if i remove the other adapter. i can no longer ping

[cgkades]

Another strange thing, is that the first interface wont work. I have to disable it, and use the new one.

[weinstein5]

Part of the virtual NIC configuration is what virtual machine port group you are connecting the NIC to - are both virtual NICs connecting to the same virtual machine port group?

[cgkades]

Yes my two VM's and their nics are all connected to the same Virtual Machine Port Group (VM Network)

[cgkades]

Looks like you have to uncheck Virtuazation in the packages. NO XEN KERNEL! oh well. at least i figured it out