Which statement is true regarding dual-stack lite?

Which statement is true regarding dual-stack lite?

Which statement is true regarding dual-stack lite?

A.
The softwire concentrator (SC) decapsulates softwire packets.

B.
SRX devices support the softwire concentrator and softwire initiator functionality.

C.
The softwire is an IPv4 tunnel over an IPv6 network.

D.
The softwire initiator (SI) encapsulates IPv6 packets in IPv4.

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MacAodh

MacAodh

http://www.juniper.net/documentation/en_US/junos15.1×49/topics/concept/ipv6-dual-stack-lite-overview.html

Softwire concentrator for DS-Lite carrier-grade Network Address Translation (NAT)–Decapsulates the IPv4-in-IPv6 packet and also performs IPv4-IPv4 NAT translations.

DS-Lite encapsulates the IPv4 packet in an IPv6 packet for transport into the provider network. These IPv4-in-IPv6 tunnels are called softwires.

Hence A and C are correct…

B: SRX can’t be an initiator; D: Wrong way around…

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Ali

Ali

based on the url you provided: These IPv4-in-IPv6 tunnels are called softwires
so it should be IPv6 Tunnel rather than IPv4 tunnel, that’s why C is incorrect

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John Smith

John Smith

I would say A is right and C is wrong. The wording on C makes me think it is wrong.

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Hassan

Hassan

C said IPv4 Tunnels over an IPv6 network, that s not mean IPv4-in-IPv6 Tunnels..
By DS-Lit The infrastructure network supporting the tunnel will be based on IPv6.

Therefor C is wrong and A is the only correct answer.

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