Internal Networking Issues

[Mark757]

I have two VMs set up in a internal network called Net1. I have had them set up for about a year using static IPs.

I have not used them in about a month or two and I tried using them tonight and the Internal Network no longer works. The VMs cannot ping each other. Both firewalls are completely disabled. I changed the NICs to dyanmic IPs to see if they would get an IP address (thinking that vitualbox had an internal DHCP server) but they both got an APIPA address.

Any thoughts?

What is weird is that this worked for so long and now I cant get it to work. The only thing I have done is upgrade virtualbox itself.

Mark

[Rali]

I am having similar issue on my laptop (win 7 64bit).
I have setup 2 nodes RAC (rac1 and rac2), these 2 vms can ping each other without any issues and I was able to complete the Linux installation and configuration. But when I tried to setup VNC or Putty to connect to rac1 or rac2 to install oracle software, I got connection time out. Then I checked and found out that I am not able to ping to any of these hosts from my laptop.

My VirtualBoc network:

C:\ipconfig
…
Ethernet adapter VirtualBox Host-Only Network:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80:be3e:**********
IPv4 Address. . . . . . . . . . . : 192.168.78.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
…

I Configured BIND DNS on Oracle Linux side:
$TTL 3H
@ IN SOA rac1 hostmaster (
101 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS rac1
NS rac2
localhost A 127.0.0.1
rac1 A 192.168.78.51
rac1-vip A 192.168.78.61
rac1-priv A 172.16.100.51
rac2 A 192.168.78.52
rac2-vip A 192.168.78.62
rac2-priv A 172.16.100.52
rac-cluster-scan A 192.168.78.251
rac-cluster-scan A 192.168.78.252
rac-cluster-scan A 192.168.78.253

from my laptop :
c:\>ping 192.168.78.51

Pinging 192.168.78.51 with 32 bytes of data:
Reply from 192.168.78.1: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.78.51:
Packets: Sent = 4, Received = 1, Lost = 3 (75% loss),
*********************************
Thank you in advance.
Ali

[Mark757]

Since my configuration was working in the past, I may try uninstalling virtualbox and reinstalling it. Its a long shot but at this point I am out of ideas.

[Mark757]

Well I finally found the issue. I totally forgot that the last time I was using my servers, I was changing the configuration of the IPSEC policy.....