Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
A network engineer must implement an IPv6 configuration on the vlan (CCNA 200-301)
A network engineer must implement an IPv6 configuration on the vlan 2000 interface to create a routable locally-unique unicast address that is blocked from being advertised to the internet.
Which configuration must the engineer apply?
A. interface vlan 2000 ipv6 address ff00:0000:aaaa::1234:2343/64
B. interface vlan 2000 ipv6 address fd00::1234:2343/64
C. interface vlan 2000 ipv6 address fe80:0000:aaaa::1234:2343/64
D. interface vlan 2000 ipv6 address fc00:0000:aaaa::a15d:1234:2343:8aca/64
Solution
Correct answer: B. interface vlan 2000 ipv6 address fd00::1234:2343/64.
The reason for this is that the address range fd00::/8 is reserved for Unique Local Addresses (ULAs) in IPv6. These addresses are routable within a local network but are not intended to be routed on the global Internet. They are also not advertised by default, which meets the requirement of being blocked from being advertised to the internet.
The other options are incorrect because:
A. ff00::/8 is the range for multicast addresses, not unicast addresses.
C. fe80::/64 is the range for link-local addresses, which are not routable.
D. fc00::/8 is also part of the Unique Local Address range, but it is deprecated and should not be used for new deployments. The fd00::/8 range is the recommended range for new Unique Local Address deployments.
Category: IP Connectivity