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IPv6 subnetting online



IP ADDRESS
mask


IP ADDRESS

The 128 bits of an IPv6 address are represented in 8 groups of 16 bits each. Each group is written as four hexadecimal digits (sometimes called hextets) and the groups are separated by colons (:).

MASK

Initially a network mask of 64 bits is shown. This mask can be modified at any time.

IP SIMPLIFIED NOTATION (IP S.)

It shows the entered IPv6 as a simplified notation.
For convenience, an IPv6 address may be abbreviated to shorter notations by application of the following rules.

An example of application of these rules:

Initial address: 2001:0db8:0000:0000:0000:ff00:0042:8329
After removing all leading zeroes in each group: 2001:db8:0:0:0:ff00:42:8329
After omitting consecutive sections of zeroes: 2001:db8::ff00:42:8329
The loopback address, 0000:0000:0000:0000:0000:0000:0000:0001, may be abbreviated to ::1 by using both rules.

NETWORK

Displays the network as defined by IPv6 ADDRESS and MASK selected in the above fields.

MINIMUM AND MAXIMUM HOST

Shows the range of IP address belonging to the network, which can be configured as hosts.

TYPE

::
UNSPECIFIED - This address may only be used as a source address by an initialising host before it has learned its own address.

::1
LOOPBACK - This address is used when a host talks to itself over IPv6. This often happens when one program sends data to another.

::ffff / 96
IPv4-MAPPED - These addresses are used to embed IPv4 addresses in an IPv6 address. One use for this is in a dual stack transition scenario where IPv4 addresses can be mapped into an IPv6 address. See RFC 4038 for more details.
Example: ::ffff:192.0.2.47

fc00:: / 7
UNIQUE LOCAL ADDRESSES (ULAs)
These addresses are reserved for local use in home and enterprise environments and are not public address space.
These addresses might not be unique, and there is no formal address registration. Packets with these addresses in the source or destination fields are not intended to be routed on the public Internet but are intended to be routed within the enterprise or organisation.
See RFC 4193 for more details.

fe80:: / 10
LINK - LOCAL ADDRESSES
These addresses are used on a single link or a non-routed common access network, such as an Ethernet LAN. They do not need to be unique outside of that link.
Link-local addresses may appear as the source or destination of an IPv6 packet. Routers must not forward IPv6 packets if the source or destination contains a linklocal address.
Link-local addresses may appear as the source or destination of an IPv6 packet. Routers must not forward IPv6 packets if the source or destination contains a linklocal address.

ff00:: / 8
MULTICAST - These addresses are used to identify multicast groups. They should only be used as destination addresses, never as source addresses.

2000:: / 3
GLOBAL UNICAST - Other than the exceptions documented in this table, the operators of networks using these addresses can be found using the Whois servers of the RIRs listed in the registry at:
http://www.iana.org/assignments/ipv6-unicast-address-assignments

PATTERN

Displays the pattern of the entered IPv6 ADDRESS Muestra el esquema de la DIRECCIÓN IPv6 que has configurado para los cálculos de subneteo. Using color coding can visually see the bits of IPv6 ADDRESS that identifies the network, subnet and host.

- bit identifying the network
- bit identifying the subnet
- bit identifying the host

SUBNET CALCULATION

Here you can configure the parameters for subnetting calculation. You can select the subnet mask that will always be equal or superior to the original network mask.
By pressing the LIST button all subnets will be listed in a pop-up window.