Ping works only one-way to host in VM virtualbox

[Petteri_Oksanen]

I am running EXOS VM's in Oracle VirtualBox.

I have a topology in this order: host1-sw1-sw2-host2.

I can ping from host2 to host1, but when I try to ping host1 to host2 the ping fails. I can't ping host2 from sw2 either. Here is snapshot of host1 and sw1:

Here is a snapshot of sw2 and host2:

Switch 1 and 2 are connected through OSPF.
What is the correct way to connect hosts in virtualized network?

I know there is no route to host from 192.168.11.3, but it still reaches 192.168.12.0/24 network, shouldn't it reach to the host also?

Thanks

- Petteri

[Petteri_Oksanen]

Here is output on switch1host:
NIC 1: MAC: 080027F61F8C, Attachment: Host-only Interface 'VirtualBox Host-Only Ethernet Adapter', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Bootpriority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 2: disabled
NIC 3: MAC: 080027CB5B31, Attachment: Internal Network 'link12', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none

And here switch2host:
NIC 1: MAC: 080027913AFE, Attachment: Host-only Interface 'VirtualBox Host-Only Ethernet Adapter', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Bootpriority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 2: disabled
NIC 3: MAC: 080027D1B51B, Attachment: Internal Network 'link22', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none

[Petteri_Oksanen]

Yes. Here is the output:

Switch1:
NIC 1: MAC: 080027A8E1D9, Attachment: Host-only Interface 'VirtualBox Host-Only Ethernet Adapter', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Bootpriority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 2: MAC: 080027FFEB8C, Attachment: Internal Network 'link11', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none
NIC 3: MAC: 080027128323, Attachment: Internal Network 'link12', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none
NIC 4: MAC: 080027F9BBE3, Attachment: Internal Network 'link13', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none

Switch2:
NIC 1: MAC: 0800279CB519, Attachment: Host-only Interface 'VirtualBox Host-Only Ethernet Adapter', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Bootpriority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 2: MAC: 080027185BAE, Attachment: Internal Network 'link21', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none
NIC 3: MAC: 080027BD9FAC, Attachment: Internal Network 'link22', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none
NIC 4: MAC: 080027BC098A, Attachment: Internal Network 'link23', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none

Router1:
NIC 1: MAC: 080027909C86, Attachment: Host-only Interface 'VirtualBox Host-Only Ethernet Adapter', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Bootpriority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 2: MAC: 080027CBAD8B, Attachment: Internal Network 'link11', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none
NIC 3: MAC: 080027F1B83E, Attachment: Internal Network 'link12', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none
NIC 4: MAC: 080027A8CFF7, Attachment: Internal Network 'link21', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow
-all, Bandwidth group: none

I have changed the network topology, but it is basically the same settings, and the problem is the same even in this setup. I tried with Windows-host and with Switch that acts as a host. I can ping from one host to another's default gateway, but can't reach the host.

[dflouret]

There may be problems with your VBox adapter settings.

Can you please run the following command on every VM? I'm particularly interested in the NIC X part of it...

vboxmanage showvminfo
Here's a sample output of the NIC part from my switch SW1. Your's should look similar.
NIC 1: MAC: 000130DF0902, Attachment: Host-only Interface 'vboxnet0', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 2: MAC: 000130DF0902, Attachment: Internal Network 'l1', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 3: MAC: 000130DF0902, Attachment: Internal Network 'l2', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 4: MAC: 000130DF0902, Attachment: Internal Network 'vlab.base-3', Cable connected: off, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 5: MAC: 000130DF0000, Attachment: Internal Network 'vlab.base-4', Cable connected: off, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 6: MAC: 000130DF0000, Attachment: Internal Network 'vlab.base-5', Cable connected: off, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 7: MAC: 000130DF0000, Attachment: Internal Network 'vlab.base-6', Cable connected: off, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none
NIC 8: MAC: 000130DF0000, Attachment: Internal Network 'vlab.base-7', Cable connected: off, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: allow-all, Bandwidth group: none



If you're running VBox undes OS X, the command will execute right away. If you're running VBox under Windows you'll have to go to the VBox directory or add it to the path...

[Petteri_Oksanen]

Hi Daniel

Awesome that you did all of this. So now you can ping from SW0 to SW3? I have exactly same settings, and it is a no-go. If I put them all under the same subnet, the ping works between hosts.

[Petteri_Oksanen]

Hi Drew

Thanks for the quick reply. All ports are assigned to virtual-router named "vrtesti", so disabling default VR was intentional. 🙂

- Petteri