8.1: IPv6 GUA Assignment Flashcards
SLAAC means___
stateless address autoconfiguration
GUAs means___
global unicast addresses
LLA
link-local addresses
To use either stateless address autoconfiguration (SLAAC) or DHCPv6, you should review ____
global unicast addresses (GUAs) and link-local addresses (LLAs)
On a router, an IPv6 global unicast address (GUA) is manually configured using the_______ interface configuration command.
ipv6 address ipv6-address/prefix-length
True or False
It is much better to manually enter an IPv6 GUA (Global unicast address)
False
Manually entering an IPv6 GUA can be time consuming and somewhat error prone.
When will the host attempt to automatically obtain and configure IPv6 address info on the interface?
when automatic IPv6 addressing is selected
ICMPv6 means___
Internet Control Message Protocol version 6
RA means__
Router Advertisement
True or False
The host will use all of three methods defined by the Internet Control Message Protocol version 6 (ICMPv6) Router Advertisement (RA) message received on the interface
False
The host will use one of three methods defined by the Internet Control Message Protocol version 6 (ICMPv6) Router Advertisement (RA) message received on the interface
An IPv6 router that is on the ____ as the host sends out RA messages that suggest to the hosts how to obtain their IPv6 addressing information
same link
The ____ is automatically created by the host when it boots and the Ethernet interface is active.
IPv6 link-local address
Host operating systems will at times show a link-local address appended with a “%” and a number. This is known as a _____. It is used by the OS to associate the LLA with a specific interface.
Zone ID or Scope ID
By default, an IPv6-enabled router advertises its ____.
IPv6 information
DEVICE GUA ASSIGNMENT
Via ___ method, no device is tracking the assignment of IPv6 addresses
stateless
DEVICE GUA ASSIGNMENT
Via ___ method, a server is tracking the assignment of IPv6 addresses
stateful
DYNAMIC GUA ASSIGNMENT->STATELESS
This method is where the router send RA messages providing all IPv6 info
The host use the RA info exclusively for all their addressing including creating their own GUA
SLAAC only
Stateless address autoconfiguration
DYNAMIC GUA ASSIGNMENT->STATELESS
This method is where the router RA messaged provide IPV6 config info to host and inform them to contact a stateless DHCPv6 server for additional config info
The host use the RA info to create their own unique GUA and get additional info from a DHCPv6 server
SLAAC with DHCP server
(Stateless DHCPv6)
DYNAMIC GUA ASSIGNMENT->Stateful
This method is where the ROUTER ra messages inform hosts to contact a stateful DHCPv6 server or DHCPv6-enabled router for all IPv6 configuration info, except def gateway address
Hosts contact a DHCPv6 server to acquire all of their IPv6 addressing info
Host obtains def gateway info from router RA messages
DHCPv6 Server
(Stateful DHCPv6)
The decision of how a client will obtain an IPv6 GUA depends on the settings within the ____.
RA message
An ICMPv6 RA message includes three flags to identify the dynamic options available to a host, as follows:
A flag, O flag, M flag
RA MESSAGES FLAGS
This is the Address Autoconfiguration flag
Use SLAAC to create an IPv6 GUA
A Flag
RA MESSAGES FLAGS
This is the Other Configuration Flag.
Other info is available from a stateless DHCPv6 server
O Flag
RA MESSAGES FLAGS
This is the Managed Address Autoconfiguration flag
Use a stateful DHCPv6 to obtain an IPV6 GUA
M Flag
