H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv6 Configuration
H3C S7500E Series Ethernet Switches Chapter 1 IPv6 Basics Configuration
1-7
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:
z Address resolution
z Neighbor reachability detection
z Duplicate address detection
z Router/prefix discovery and address autoconfiguration
z Redirection
Table 1-3 lists the types and functions of ICMPv6 messages used by the NDP.
Table 1-3 Types and functions of ICMPv6 messages
ICMPv6 message Number Function
Used to acquire the link-layer address of a
neighbor
Used to verify whether the neighbor is
reachable
Neighbor solicitation
(NS) message
135
Used to perform a duplicate address
detection
Used to respond to an NS message
Neighbor
advertisement (NA)
message
136
When the link layer changes, the local node
initiates an NA message to notify neighbor
nodes of the node information change.
Router solicitation
(RS) message
133
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.