IPv6 Address Notation and Subnetting

IP Address Notation

• 2001:DA48::/64 represents an IPv6 address and a subnet mask.
• The notation 2001:DA48::/64 specifies a specific range of IPv6 addresses within a larger network.

IPv6 Address Structure

• IPv6 addresses are 128-bit values.
• The hexadecimal notation 2001:DA48 represents a portion of the 128-bit address.
• The :: represents a series of zero bits. It's a shorthand notation for multiple consecutive zero bits in the address.
• The "/64" portion specifies a subnet mask.

Subnet Mask

• The /64 indicates a subnet mask that defines the network prefix.
• A /64 mask means 64 bits of the address are used for the network portion and the remaining 64 bits are for the host portion.
• This creates a very large network containing a large number of individual addresses that can be assigned to devices.

Network Prefix

• The network prefix is the first 64 bits of the address.
• This portion identifies the network to which the specified address belongs.

Host Addresses

• The remaining 64 bits specify the host or interface on the network.
• This means the 2001:DA48::/64 structure allows for a large number of host addresses within that network.

Network Size

• A /64 subnet is a very small network compared to some other IPv6 subnet mask sizes.
• The size of the network is reflected in the available host addresses within it.

Application and Uses

• This type of IPv6 address and subnet mask structure would likely appear in various network configurations, potentially across the internet or within an organization.
• The exact usage would depend on the specific network setup and design choices.