Question 1

An engineer noticed that PE3 is failing to accept IPv6 traffic information from PE1 The engineer confirmed that both PE3 and PE1 routers are configured accurately with IPv6 protocol To eliminate IPv6 traffic loss issue, which action must the engineer take to solve the problem?

Options :

A : Disable 6PVE that provides local IPv6 reachability over MPLS.

B : Configure 6PE that provides global IPv6 reachability over IPv4 MPLS

C : Allow PE routers use the MP-iBGP extensions in the IPv6 network configuration to exchange IPv6 reachability information.

D : Configure 6PE forwarding between 6PE routers based on the IPv6 header

Answer: B

Question 2

The network engineering group of a large ISP needs to harden the management plane of its Cisco 9000

Series ASRs. While addressing IPv6 ICMP issues, they realized they have to limit the rate at which IPv6 ICMP error messages are sent out on the network. Which command do they need to apply?

Options :

A : icmp ipv6 rate-limit unreachable 1000

B : ipv6 rate-limit 1000

C : icmp ipv4 rate-limit unreachable 1000

D : ipv6 icmp error-interval 50 20

Answer: D

Question 3

An ISP provides a major client MPLS VPN for managed services. The MPLS engineering team needs to use the advanced VPN feature of selective VRF import so that only specific prefixes are present in the required VPNs.

Which aspect of this feature must the team consider?

Options :

A : A route must pass the import route map first and then the route target import filter.

B : The routers that are imported in the VRF can be BGP and IGP routes, so other match conditions in the route map, besides communities, can be used.

C : The import-map command is applied under the PE interface that connects to the CE router.

D : A route is imported into the VRF only when at least one RT that is attached to the route matches one RT that is configured in the VRF and the route is permitted by the import route map.

Answer: D

Question 4

Which is the primary function of a MPLS L3 VPN route target?

Options :

A : It imports and exports identified routes into selected VRFs.

B : It uniquely identifies NLRIs that have the same numeric value.

C : It imports the external routes it identifies into VRFs that support Internet traffic

D : It supports QoS by classifying traffic by file type when it applies MPLS EXP bits to each packet.

Answer: A

Question 5

What is a requirement to share VRF reachability information to all members of a VPN when using IPv6?

Options :

A : PE and CE routers must be running BGP as the PE-CE routing protocol

B : PE routers must have MPLS disabled and be running MP-BGP between all P and PE routers.

C : PE routers must be running MP-BGP and bgp default ipv4-unicast must be disabled

D : All PEs must have the same VRFs configured.

Answer: D

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