Introduction To Ipv6 Neighbor Discovery Protocol - H3C S5500-SI Series Operation Manual

Operation Manual – IPv6
H3C S5500-SI Series Ethernet Switches
Figure 1-2 Convert a MAC address into an EUI-64 interface identifier

1.1.3 Introduction to IPv6 Neighbor Discovery Protocol

IPv6 Neighbor Discovery Protocol (NDP) uses five types of ICMPv6 messages to
implement the following functions:
Address resolution
Neighbor reachability detection
Duplicate address detection
Router/prefix discovery and address autoconfiguration
Redirection
Table 1-3
Table 1-3 Types and functions of ICMPv6 messages
ICMPv6 message
Neighbor solicitation
(NS) message
Neighbor
advertisement (NA)
message
Router solicitation
(RS) message
lists the types and functions of ICMPv6 messages used by the NDP.
Number
135
136
133
Chapter 1 IPv6 Basics Configuration
Used to acquire the link-layer address of a
neighbor
Used to verify whether the neighbor is
reachable
Used to perform a duplicate address
detection
Used to respond to an NS message
When the link layer changes, the local node
initiates an NA message to notify neighbor
nodes of the node information change.
After started, a node sends an RS message
to request the router for an address prefix and
other configuration information for the
purpose of autoconfiguration.
1-7
Function