Export the Active Configuration ( running-config for Cisco folks ) to a TFTP store running on Ubuntu 14.
Jump into your Ubuntu box and install the tftpd-hpa package using apt-get.
#apt-get install tftpd-hpa
Configure a few properties of the TFTP daemon.
TFTP_OPTIONS=”-c -v –secure”
Create and chmod /var/lib/tftp to allow writing to this directory by group “others”.
chmod o+w /var/lib/tftp
Export the active configuration.
tftp export configuration remote-port 69 source-ip 192.168.1.1 from running-config.xml to 192.168.1.253
I imported a vm into Oracle VirtualBox that was exported from VMWare ESXi and found the only resolution to use was 640×480.
To solve open a shell and run apt-get install virtualbox-guest-dkms
Kudos to askbuntu.com
In our example we apply the subnet mask 255.255.255.128 [ /25] to the network 188.8.131.52.
Subtract 25 from 32 total mask bits to leave 7 unmask bits which give way to host bits. Find the total address, including subnet and broadcast, per subnet chunk by raising 2 to the power of unmask bits.
Remember 2^8 = 256
2^7 = (2^8) / 2 = 128
Count from 0 by increments found in your computed answer to 256.
In this case we established two subnets using the /25 netmask.
Subnet First Host Last Host Broadcast
0 1 126 127
128 129 254 255