What is the purpose of a Link-local Address (LLA)?

An LLA enables a device to communicate with other IPv6-enabled devices on the same local link and is not routable.

What is the command to configure a static GUA on a router?

The command is 'ipv6 address ipv6-address/prefix-length'.

How does a device create a dynamic Link-local Address (LLA)?

An LLA is dynamically created using the fe80::/10 prefix and an interface ID generated by the EUI-64 process or a randomly generated 64-bit number.

What is the significance of the 64-bit Interface ID in IPv6?

The 64-bit Interface ID is used for most networks and is essential for Stateless Address Autoconfiguration (SLAAC).

What is the process of Duplicate Address Detection (DAD)?

DAD is a process used to ensure the uniqueness of an IPv6 unicast address, similar to an ARP request.

What is the preferred format for writing an IPv6 address?

The preferred format is x:x:x:x:x:x:x:x, where each 'x' consists of four hexadecimal values.

What happens if an LLA is not manually configured on an interface?

If an LLA is not configured manually, the device will automatically create one.

What is the maximum number of /64 subnets that can be created from a /48 global routing prefix?

A /48 global routing prefix allows for 65,536 /64 subnets.

What is the purpose of the subnet ID field in an IPv6 GUA?

The subnet ID field is used to create subnets within the Global Routing Prefix.

How are hexadecimal numbers converted to decimal?

Hexadecimal numbers are converted to binary, grouped into 8-bit binary strings, and then converted to their equivalent decimal digit.

What is the significance of the EUI-64 process in IPv6?

The EUI-64 process is used to generate the Interface ID for IPv6 addresses by modifying the client's MAC address.

What is the role of Router Advertisement (RA) messages in SLAAC?

RA messages provide IPv6 hosts with addressing information, including the prefix, prefix length, DNS address, and domain name.

What is the difference between a Global Unicast Address (GUA) and a Link-local Address (LLA)?

A GUA is globally unique and routable on the internet, while an LLA is used for local communication and is not routable.

What is the command to configure a static Link-local Address (LLA) on a router?

The command is 'ipv6 address ipv6-link-local-address link-local'.

What is the maximum number of addresses available in IPv6?

IPv6 has a total of 340 undecillion addresses.

What is the purpose of the leading zero omission rule in IPv6 address representation?

The leading zero omission rule allows for a more concise representation of IPv6 addresses by removing unnecessary leading zeros.

What is the significance of the 7th bit in the EUI-64 process?

The 7th bit of the client MAC address is reversed from binary 0 to 1 to create a unique Interface ID.

What is the command to view the IPv6 interface configuration on a Cisco router?

The command is 'show ipv6 interface brief'.

What is the purpose of the Global Routing Prefix in IPv6 addressing?

The Global Routing Prefix identifies the network portion of the IPv6 address and is assigned by the service provider.

What is the maximum prefix length for IPv6 addresses?

The maximum prefix length for IPv6 addresses is /128.

What is the difference between preferred and compressed formats of IPv6 addresses?

The preferred format includes leading zeros, while the compressed format omits leading zeros and may use the double colon (::) for contiguous zeros.

What is the role of the interface ID in an IPv6 address?

The interface ID uniquely identifies an interface on a local link and is typically 64 bits in length.

What is the significance of the fe80::/10 range in IPv6?

The fe80::/10 range is designated for Link-local Addresses (LLAs) in IPv6.

What is the command to configure a GUA on a Windows host?

The GUA or LLA of the router interface can be used as the default gateway, typically configured through the network settings.

What is the purpose of the subnet allocation in IPv6 addressing?

Subnet allocation allows for the division of a larger network into smaller, manageable subnets.

What is the maximum number of hextets in an IPv6 address?

An IPv6 address consists of 8 hextets.

What is the significance of the prefix length in IPv6 addressing?

The prefix length indicates the number of bits used for the network portion of the address.

What is the command to configure a static GUA on a Windows host?

The GUA can be configured through the network settings, similar to IPv4.

What is the purpose of the IPv6 address compression rules?

The compression rules simplify the representation of IPv6 addresses by omitting leading zeros and using the double colon (::) for contiguous zeros.

What is the role of the service provider in IPv6 addressing?

The service provider assigns the network portion of the Global Unicast Address (GUA) to customer sites.

What is the significance of the 128-bit address space in IPv6?

The 128-bit address space allows for a vastly larger number of unique addresses compared to IPv4.

What is the command to configure a dynamic LLA on a Cisco router?

Dynamic LLAs are automatically created when a GUA is assigned to the interface.

What is the purpose of the interface ID generation process?

The interface ID generation process ensures that each IPv6 address is unique on the local link.

What is the significance of the 64-bit Interface ID in SLAAC?

The 64-bit Interface ID is crucial for creating a unique Global Unicast Address (GUA) during Stateless Address Autoconfiguration.

What is the command to view the IPv6 address configuration on a Cisco router?

The command is 'show ipv6 interface brief'.

What is the purpose of the subnet ID in an IPv6 address?

The subnet ID is used to identify specific subnets within a larger network.

What is the maximum number of addresses available in a /64 subnet?

A /64 subnet provides a vast number of addresses, far exceeding the needs of most networks.

What is the significance of the hexadecimal numbering system in IPv6?

Hexadecimal is used to represent IPv6 addresses and MAC addresses, allowing for a more compact representation.

What is the command to configure a static GUA on a router interface?

The command is 'ipv6 address ipv6-address/prefix-length'.

What is the role of the Router Advertisement (RA) in IPv6?

RA messages provide IPv6 hosts with necessary addressing information, including the prefix and default gateway.

IPv6 Addressing Flashcards

Student preview

47 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the primary reason for the transition from IPv4 to IPv6?

Back

IPv4 is running out of addresses, with only 4.3 billion available, while IPv6 has a 128-bit address space allowing for 340 undecillion addresses.

2.

FLASHCARD QUESTION

Front

How are IPv6 addresses represented?

Back

IPv6 addresses are represented in hexadecimal format, consisting of 32 hexadecimal values, with each group of four hexadecimal characters called a hextet.

3.

FLASHCARD QUESTION

Front

What are the two main types of IPv6 unicast addresses?

Back

Global Unicast Address (GUA) and Link-local Address (LLA).

4.

FLASHCARD QUESTION

Front

What is the recommended prefix length for IPv6 addresses?

Back

The recommended IPv6 prefix length is /64.

5.

FLASHCARD QUESTION

Front

What does the double colon (::) signify in an IPv6 address?

Back

The double colon can replace any contiguous string of one or more 16-bit hextets consisting of all zeros, but can only be used once in an address.

6.

FLASHCARD QUESTION

Front

What is Stateless Address Autoconfiguration (SLAAC)?

Back

SLAAC allows a device to configure a Global Unicast Address (GUA) without DHCPv6, using Router Advertisement messages to obtain necessary information.

7.

FLASHCARD QUESTION

Front

What is the structure of a Global Unicast Address (GUA)?

Back

A GUA begins with the first three bits of 001 or 2000::/3, and is assigned by the service provider to identify subnets within a site.

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