What are the 5 neighbor discovery protocol message types?
What are the 5 neighbor discovery protocol message types?
NDP defines five ICMPv6 packet types for the purpose of router solicitation, router advertisement, neighbor solicitation, neighbor advertisement, and network redirects.
What 5 message types are used by ICMPv6 to provide addressing?
Internet Control Message Protocol version 6 (ICMPv6) Parameters
- Type 0 – Reserved.
- Type 1 – Destination Unreachable.
- Type 2 – Packet Too Big.
- Type 3 – Time Exceeded.
- Type 4 – Parameter Problem.
- Type 128 – Echo Request.
- Type 129 – Echo Reply.
- Type 130 – Multicast Listener Query.
What does ICMPv6 include?
The ICMPv6 message consists of a header and the protocol payload. The header contains only three fields: type (8 bits), code (8 bits), and checksum (16 bits). The code field value depends on the message type and provides an additional level of message granularity.
What is RA IPv6?
Router advertisement (RA) messages, which have a value of 134 in the Type field of the ICMP packet header, are periodically sent out each configured interface of an IPv6 router. For stateless autoconfiguration to work properly, the advertised prefix length in RA messages must always be 64 bits.
What is the purpose of neighbor discovery and maintenance?
The Neighbor Discovery Protocol (NDP) helps the communication between neighboring hosts in local networks, and determines the gateway router.
What is the purpose of ICMPv6?
The Internet Control Message Protocol (ICMP) is a network layer protocol used by network devices to diagnose network communication issues. ICMP is mainly used to determine whether or not data is reaching its intended destination in a timely manner.
What causes an IPv6 device to send a neighbor advertisement NA message?
Neighbor advertisement messages are also sent when there is a change in the link-layer address of a node on a local link. When there is such a change, the destination address for the neighbor advertisement is the all-nodes multicast address.
What is a limitation of IPv6 RA Guard?
Restrictions for IPv6 RA Guard. The IPv6 RA Guard feature does not offer protection in environments where IPv6 traffic is tunneled. This feature is supported only in hardware when the ternary content addressable memory (TCAM) is programmed.
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