Ipv6 Neighbor Discovery Protocol - HP 6125G Configuration Manual

On a tunnel interface
•
The lower 32 bits of the EUI-64 address-based interface identifier are the source IPv4 address of
the tunnel interface. The higher 32 bits of the EUI-64 address-based interface identifier of an
ISATAP tunnel interface are 0000:5EFE, whereas those of other tunnel interfaces are all zeros. For
more information about tunnels, see
On an interface of another type
•
The EUI-64 address-based interface identifier is generated randomly by the device.

IPv6 neighbor discovery protocol

The IPv6 Neighbor Discovery (ND) protocol 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 7 ICMPv6 messages used by ND
ICMPv6 message
Neighbor Solicitation (NS)
message
Neighbor Advertisement
(NA) message
Router Solicitation (RS)
message
Router Advertisement (RA)
message
Redirect message
Address resolution
This function is similar to the ARP function in IPv4. An IPv6 node acquires the link-layer addresses of
neighboring nodes on the same link through NS and NA message exchanges.
Host A acquires the link-layer address of Host B on a single link.
"Configuring
Type Function
Acquires the link-layer address of a neighbor.
135 Verifies whether a neighbor is reachable.
Detects duplicate addresses.
Responds to an NS message.
136
Notifies the neighboring nodes of link layer changes.
Requests an address prefix and other configuration information for
133
autoconfiguration after startup.
Responds to an RS message.
134
Advertises information such as the Prefix Information options and flag
bits.
Informs the source host of a better next hop on the path to a particular
137
destination when certain conditions are satisfied.
83
tunneling."
Figure 45 shows how