CCNA ITCC1475 Chapter 8
Stateless Address Autoconfiguraton
-A method that allows a device to obtain its prefix, prefix length and default gateway from an IPv6 router -No DHCPv6 server needed -Rely on ICMPv6 Router Advertisement (RA) messages
What is Unspecified Address ?
-All-0's address represented as ::/128 or just :: -Cannot be assigned to an interface and is only used as a source address. -An unspecified address is used as a source address when the device does not yet have a permanent IPv6 address or when the source of the packet is irrelevant to the destination.
What are the different types of unicast addresses?
-Global Unicast -Link-local FE80::/10 - FEBF::/10 -Loopback ::1/128 -Unique Local FC00::/7 - FDFF::/7 -Unspecified Address ::/128 -Embedded IPv4
What is Global Unicast?
-Similar to a public IPv4 address -Globally unique -Internet routable addresses -Can be configured statically or assigned dynamically
What is Unique Local?
-Similar to private addresses for IPv4. -Used for local addressing within a site or between a limited number of sites. -In the range of FC00::/7 to FDFF::/7.
What are the 3 types of IPv6 addresses?
-Unicast -Mulitcast -Anycast
What is Loopback?
-Used by a host to send a packet to itself and cannot be assigned to a physical interface. -Ping an IPv6 loopback address to test the configuration of TCP/IP on the local host. -All-0s except for the last bit, represented as ::1/128 or just ::1.
What is Link-local?
-Used to communicate with other devices on the same local link -Confined to a single link; not routable beyond the link
How many Bits for IPv6 address?
128 bit
What is Tunnelling?
A method of transporting an IPv6 packet over an IPv4 network. The IPv6 packet is encapsulated inside an IPv4 packet.
What is Dual-stack?
Allows IPv4 and IPv6 to coexist on the same network. Devices run both IPv4 and IPv6 protocol stacks simultaneously.
What 2 address does an ipv6 address have?
Global Unicast Link-local
What type of address is FE80::/10?
Link Local Unicast Address Range of address
How do you configure Link-Local address?
R1 (config)# interface gigabiteeathernet 0/0 R1 (config-if)# ipv6 address fe80::1 ? " ipv6 address fe80::1 link-local " exit R1 (config)# interface gigabiteathernet 0/1 R1 (config-if)# ipv6 address fe80::1 link-local "exit R1 (config)#interface serial 0/0/0 R1 (config-if)#ipv6 address fe80::1 link-local
How can you see IPv6 interfaces?
Show ipv6 interface brief
SLAAC
Stateless Address Autoconfiguraton
What is Translation?
The Network Address Translation 64 (NAT64) allows IPv6-enabled devices to communicate with IPv4-enabled devices using a translation technique similar to NAT for IPv4. An IPv6 packet is translated to an IPv4 packet, and vice versa.
What is IPv4 Embedded?
Used to help transition from IPv4 to IPv6
How do you assign IP address in IPv6? (IOS)
ipv6 address xxx.xxx.xxx.../64
