In IPv6, NDP (Neighbor Discovery Protocol) uses multiple types of ICMPv6 packets. Which of the following functions are RS (Router Solicitation) packets used for?
Neighbor Discovery Protocol (NDP) replaces ARP in IPv6 and uses ICMPv6 messages for:
Router Solicitation (RS) → Sent by hosts to request Router Advertisement (RA) messages.
Router Advertisement (RA) → Sent by routers to announce prefixes and network parameters.
Neighbor Solicitation (NS) → Used for address resolution and Duplicate Address Detection (DAD).
Neighbor Advertisement (NA) → Sent in response to NS messages.
Redirect → Used by routers to redirect hosts to better gateways.
RS is not directly used for address resolution; Neighbor Solicitation (NS) does this, so the answer should be D.
???? Reference: Huawei HCIA-Datacom Study Guide, NDP and ICMPv6 Packet Types.
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