Does IPv6 have a subnet mask?

IPv6 doesn’t have a subnet mask but instead calls it a Prefix Length, often shortened to “Prefix”. Prefix length and CIDR masking work similarly; The prefix length denotes how many bits of the address define the network in which it exists.

How do I find my subnet prefix length IPv6?

IPv6 addresses Subnet address – the fourth grouping of numbers (the 49th through 64th bits) in the subnet mask. Device address – the last four groupings of numbers (the last 64 bits) in the subnet mask.

What is IPv6 subnet ID?

IN IPv6, the subnet ID defines an administrative subnet of the network and is up to 16 bits in length. You assign a subnet ID as part of IPv6 network configuration. The subnet prefix defines the site topology to a router by specifying the specific link to which the subnet has been assigned.

What is IPv6 subnet prefix length?

You can also specify a subnet prefix, which defines the internal topology of the network to a router. The example IPv6 address has the following subnet prefix. The subnet prefix always contains 64 bits. These bits include 48 bits for the site prefix, in addition to 16 bits for the subnet ID.

How do you calculate subnet prefix length?

In IPv6, the network prefix performs a similar function as the subnet mask in IPv4, with the prefix length representing the number of bits in the address….IPv6 Subnet Calculator.

Prefix size Network mask Usable hosts per subnet
/29 6
/30 2
/31 0
/32 0

How do you find subnet prefix length?

In IPv4, the prefix (or network portion) of the address can be identified by a dotted-decimal netmask, commonly referred to as a subnet mask. For example, 255.255. 255.0 indicates that the network portion, or prefix length, of the IPv4 address is the leftmost 24 bits.

How do I find my IPv6 interface ID?

The second part of an IPv6 unicast or anycast address is typically a 64-bit interface identifier used to identify a host’s network interface. A 64-bit interface ID is created by inserting the hex value of FFFE in the middle of the MAC address of the network card.