IPv6 Flashcards
Is this an acceptable IPv6 address, 2001::1::B?
No, you can only shorten the address with double colons one time.
What are the Hexadecimal field
0-9, A-F
What is the mask for standard IPv6 addresses?
/64
What are the two halves of an IPv6 address
Network & Host
If a company was an assigned a /48 address by the internet authorities, how many bits does it have left to assign to its internal subnet
16 bits
48 from internet authorities
64 host addresses
16 bits left over
What is an EUI-64 address?
IPv6 address generated by the interface
How do you configure a IPv6EUI address
IPv6 address (IPv6 subnet)/64 eui-64
How does the interface come up with its EUI address
IT uses the subnet
part of the MAC address
injects FF:FE in the middle
7th bit is inverted
What is Unique Local Addresses?
Similar to IPv4 private addresses
10.0.0.0
172.16.0.0.0
192.168.0.0
What is Link Local
IPv6 address that is only allowed on one link
Can only communicate if the links are directly connected to each other or connected through a switch
R1 - R2 - R3
R1-R2 can talk
R2 - R3 can talk
R1 - R3 CAN NOT talk
What is the maximum number of IPv4 addresses that you can have on an interface
2
When regularly configuring an interface with IPv6, what is the command
R1(config)# IPv6 add 2001:DC8:0:1::/64
What does SLAAC stand for?
Stateless Address Auto Configuration
What is Neighbor solicitation similar to?
Address Resolution Protocol (ARP)
It sends out a solicited-node multicast address to all host on the subnet
Is IPv6 routing disabled by default? If so how do you enable it?
Yes, IPv6 unicast-routing
