200-301 · Question #1385
Refer to the exhibit. IPv6 must be implemented on R1 to the ISP. The uplink between R1 and the ISP must be configured with a manual assignment, and the LAN interface must be self- provisioned. Both co
The correct answer is B. interface Gi0/0 E. interface Gi0/1. To implement IPv6 with a manual assignment for the ISP uplink and self-provisioning for the LAN, the appropriate commands are 'ipv6 address <address>/<prefix>' on the ISP interface and 'ipv6 address autoconfig' on the LAN interface.
Question
Refer to the exhibit. IPv6 must be implemented on R1 to the ISP. The uplink between R1 and the ISP must be configured with a manual assignment, and the LAN interface must be self- provisioned. Both connections must use the applicable IPv6 networks. Which two configurations must be applied to R1? (Choose two.)
Exhibits
Options
- Ainterface Gi0/0
- Binterface Gi0/0
- Cinterface Gi0/1
- Dinterface Gi0/0
- Einterface Gi0/1
How the community answered
(33 responses)- A6% (2)
- B79% (26)
- C3% (1)
- D12% (4)
Why each option
To implement IPv6 with a manual assignment for the ISP uplink and self-provisioning for the LAN, the appropriate commands are 'ipv6 address <address>/<prefix>' on the ISP interface and 'ipv6 address autoconfig' on the LAN interface.
Applying `ipv6 address autoconfig` to `interface Gi0/0` would make the ISP uplink self-provisioned, directly contradicting the requirement for a manual assignment.
The command `ipv6 address 2001:db8:d955:1001::1/64` on `interface Gi0/0` manually assigns a specific global unicast IPv6 address and prefix length, fulfilling the requirement for a manual assignment on the ISP uplink.
Manually assigning an IPv6 address (e.g., `ipv6 address 2001:db8:d955:1008::1/64`) to `interface Gi0/1` would violate the requirement for the LAN interface to be self-provisioned.
Configuring only a link-local address (`ipv6 address fe80::1 link-local`) on `interface Gi0/0` does not provide a global unicast address and does not fulfill the requirement for a manual global IPv6 assignment to the ISP uplink.
The command `ipv6 address autoconfig` on `interface Gi0/1` enables Stateless Address Autoconfiguration (SLAAC), allowing the interface to self-provision its IPv6 address from Router Advertisements, which meets the requirement for the LAN interface.
Concept tested: IPv6 address configuration methods (manual and SLAAC)
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-16/ipv6-xe-16-book/ip6-addr-config.html
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