CompTIA Network+ (N10-009)Network OperationsEasy
A network administrator is designing a new network segment for IoT devices that will primarily use IPv6. The administrator wants these devices to automatically configure their IPv6 addresses without needing a stateful DHCPv6 server for address assignment, but still receive DNS server information. Which IPv6 address assignment method should be configured?
- AManual IPv6 configuration
- BStateful DHCPv6
- CSLAAC with Stateless DHCPv6
- DLink-Local Addressing
Show answer & explanationAnswer & explanation
Correct answer: C. SLAAC with Stateless DHCPv6
SLAAC (Stateless Address Autoconfiguration) allows devices to generate their own IPv6 addresses from router advertisements. When combined with Stateless DHCPv6, it provides additional configuration information like DNS servers without managing IP addresses centrally.
Why the other options are wrong
- A. Manual configuration requires an administrator to set each device's IP address, which is not automatic.
- B. Stateful DHCPv6 assigns both IPv6 addresses and other configuration details, requiring a server to keep track of assignments.
- D. Link-Local addresses are only for communication on the local segment and are not routable, nor do they provide DNS information.
SLAAC with Stateless DHCPv6
A method for IPv6 address assignment where devices automatically configure their IP addresses using router advertisements (SLAAC) and then obtain additional network configuration information, such as DNS server addresses, from a DHCPv6 server in stateless mode.
- SLAAC handles address generation from router advertisements.
- Stateless DHCPv6 provides supplementary information like DNS.
- No central server manages IP address leases for stateless DHCPv6.
Memory trick: IPv6's address options: Auto-assign, Serve-all, or Hand-set.