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Exam JN0-663 topic 1 question 60 discussion

Actual exam question from Juniper's JN0-663

Question #: 60
Topic #: 1

You are establishing a Layer 3 VPN between two PE devices. Currently you have a single internal IPv4 BGP peering between the PE devices. You must ensure that the IPv4 and IPv6 routes from both CE devices are exchanged between these sites.
Which two statements are correct in this scenario? (Choose two.)

A. You must enable IPv6 tunneling on the LSPs between the PE devices.
B. You must establish an IPv6 BGP peering between the two PEs.
C. You must enable the inet6-vpn NLRI on both PE devices.
D. You must enable the inet-vpn NLRI on both PE devices.

Show Suggested Answer

Suggested Answer: CD 🗳️

by mikkamilla at June 15, 2021, 9:43 a.m.

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mikkamilla

Highly Voted 3 years, 10 months ago

I think it's A and C: https://www.juniper.net/documentation/us/en/software/junos/vpn-l3/topics/topic-map/l3-vpns-ipv6-traffic.html

upvoted 10 times

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Sct38

Highly Voted 3 years, 4 months ago

IPv6 tunneling is configured at MPLS level, not LSP. C and D inidicates inet6-vpn and inet-vpn is not configured between PE's, so answer is C+D

upvoted 6 times

dodds

3 years ago

Agreed with C&D

upvoted 2 times

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DIbyam

Most Recent 2 years, 6 months ago

A and C are correct. We need ipv6-tunnelling feature to be enabled. https://www.juniper.net/documentation/us/en/software/junos/vpn-l3/topics/topic-map/l3-vpns-ipv6-traffic.html

upvoted 1 times

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magmartin

2 years, 9 months ago

I think the same. Although family inet-vpn (answer D) is already necessary in the configuration, I think we can suppose that it is already configured as the question says "Currently you have a single internal IPv4 BGP peering between the PE devices". Anyway this leads to confusion, because the correct answers to the final question are A, C & D

upvoted 3 times

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lalonacho

3 years, 4 months ago

C and D are correct, cause they are asking to make sure that IPv4 and IPV6 routes are exchanged, not only IPv6 routes