IPv6 Fundamentals
The total number of bits in an IPv6 address.
What is 128 bits?
This address type uniquely identifies an interface on an IPv6-enabled device.
What is a unicast address?
The Cisco IOS command used to assign a static GUA to a router interface.
What is ipv6 address?
This method allows a device to configure its own GUA without using a DHCPv6 server.
What is SLAAC?
The recommended prefix length for most IPv6 LANs
What is /64?
The term for a segment of 16 bits or four hexadecimal values in an IPv6 address.
What is a hextet?
These are globally unique, internet-routable addresses similar to public IPv4 addresses
What is a Global Unicast Address (GUA)?
The specific hexadecimal prefix range for all Link-local addresses.
What is fe80::/10?
The ICMPv6 message sent by hosts to discover IPv6 routers on the network.
What is a Router Solicitation (RS)?
This 16-bit hex value is inserted into the middle of a 48-bit MAC address to create an EUI-64 Interface ID
What is fffe?
The base-16 numbering system used to write IPv6 addresses.
What is hexadecimal?
This address is required for every IPv6-enabled interface and is used for communication on a single local link.
What is a Link-local Address (LLA)?
The Cisco IOS command used to quickly see if an interface is "up" and display its IPv6 addresses.
What is show ipv6 interface brief?
The ICMPv6 message sent by routers every 200 seconds to provide network information to hosts.
What is a Router Advertisement (RA)?
To complete the EUI-64 process, this specific bit of the client's MAC address must be reversed.
What is the 7th bit?
Rule 1 of notation, which allows you to reduce the size of an address by removing these from any hextet.
What are leading zeros?
Unlike IPv4, IPv6 does not have this type of address; however, an all-nodes multicast address provides a similar result.
What is a broadcast address?
This global configuration command is required to enable a router to join the all-routers multicast group.
What is ipv6 unicast-routing?
The dynamic method where a server provides the GUA, prefix length, and DNS addresses to a client.
What is stateful DHCPv6?
The field in a GUA located between the Global Routing Prefix and the Interface ID used specifically for organization subnets.
What is the Subnet ID?
The constraint on how many times a double colon (::) can be used within a single IPv6 address.
What is only once?
The IPv6 address range fc00::/7 to fdff::/7 used for local addressing within a site.
What are Unique Local Addresses (ULA)?
Best practice dictates using this specific address type of the router as the default gateway for hosts.
What is the Link-local Address (LLA)?
The process used by a client to ensure that its dynamically generated unicast address is unique on the link.
What is Duplicate Address Detection (DAD)?
The total number of /64 subnets available if an organization uses a 16-bit Subnet ID.
What is 65,536?