Which L2 IPv6 snooping features validate the source of IPv6 traffic? (Choose two.)
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Correct answer: IPv6 Source Guard, IPv6 Prefix Guard.
Why this is the answer
IPv6 Source Guard and IPv6 Prefix Guard are L2 IPv6 snooping features that validate the source of IPv6 traffic. IPv6 Source Guard uses information from DHCPv6 snooping or static bindings to create an allow-list of valid source IPv6 addresses and their corresponding MAC addresses, preventing unauthorized source addresses from sending traffic. IPv6 Prefix Guard prevents hosts from using IPv6 prefixes that were not assigned to them, often by validating against prefixes learned via DHCPv6 or router advertisements. DHCPv6 Guard protects against rogue DHCPv6 servers, not client source validation. DHCPv6 Root Guard is not a standard Cisco feature for IPv6.
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