Public IP address of a Cloud VPS OpenStack
The public IP address associated with the Cloud VPS OpenStack allows it to be reached over the Internet. A Cloud VPS OpenStack with a public IP address has direct network access and can benefit from a very high dedicated connection speed, almost comparable to the maximum speed of the network adapter itself.
Aruba Cloud provides one public IP address (IPv4) for each Cloud VPS OpenStack, which is included in the price and already configured.
The public IP address provided allows you to connect to the Cloud VPS OpenStack using tools such as
RDP (Windows) or
SSH (Linux).
IPv6
IPv6 (Internet Protocol version 6) is the version of the Internet Protocol developed to overcome the limitations of the IPv4 address space.
An IPv6 address consists of 128 bits and provides a much larger address space than the 32 bits used by IPv4.
Differences between IPv4 and IPv6
| |
IPv4 |
IPv6 |
| length |
32 bits |
128 bits |
| format |
4 groups of decimal numbers separated by a dot
192.0.2.1 |
8 groups of hexadecimal digits separated by colons
2001:db8:85a3:0:0:8a2e:370:7344 |
| address space |
232 addresses |
2128 addresses |
Advantages of IPv6
The main advantage of IPv6 is that it provides a significantly larger address space than IPv4. This allows a much larger number of IP addresses to be assigned and reduces the need to use techniques for sharing public IP addresses, such as NAT (Network Address Translation).
IPv6 syntax rules
An IPv6 address consists of eight groups of hexadecimal digits separated by colons. Some abbreviation rules can be applied when writing an IPv6 address:
- leading zeros in each group can be omitted;
2001:0db8:0000:0000:0000:0000:0000:0001 = 2001:db8:0:0:0:0:0:1;
- the longest sequence of consecutive groups consisting of zeros can be replaced once with ::;
2001:db8:0:0:0:0:0:1 = 2001:db8::1;
- letters used to represent hexadecimal digits are written in lowercase.
Transition from IPv4 to IPv6
Aruba Cloud uses dual-stack technology to allow IPv4 and IPv6 to be used in parallel. This allows the two protocols to coexist during the transition from IPv4 to IPv6.