ZyXEL NWA1123-NI User Guide - Page 178

Global Address, Unspecified Address, Loopback Address, Multicast Address, Table 51, DESCRIPTION

Page 178 highlights

Appendix D IPv6 Global Address A global address uniquely identifies a device on the Internet. It is similar to a "public IP address" in IPv4. A global unicast address starts with a 2 or 3. Unspecified Address An unspecified address (0:0:0:0:0:0:0:0 or ::) is used as the source address when a device does not have its own address. It is similar to "0.0.0.0" in IPv4. Loopback Address A loopback address (0:0:0:0:0:0:0:1 or ::1) allows a host to send packets to itself. It is similar to "127.0.0.1" in IPv4. Multicast Address In IPv6, multicast addresses provide the same functionality as IPv4 broadcast addresses. Broadcasting is not supported in IPv6. A multicast address allows a host to send packets to all hosts in a multicast group. Multicast scope allows you to determine the size of the multicast group. A multicast address has a predefined prefix of ff00::/8. The following table describes some of the predefined multicast addresses. Table 51 Predefined Multicast Address MULTICAST ADDRESS DESCRIPTION FF01:0:0:0:0:0:0:1 All hosts on a local node. FF01:0:0:0:0:0:0:2 All routers on a local node. FF02:0:0:0:0:0:0:1 All hosts on a local connected link. FF02:0:0:0:0:0:0:2 All routers on a local connected link. FF05:0:0:0:0:0:0:2 All routers on a local site. FF05:0:0:0:0:0:1:3 All DHCP severs on a local site. The following table describes the multicast addresses which are reserved and can not be assigned to a multicast group. Table 52 Reserved Multicast Address MULTICAST ADDRESS FF00:0:0:0:0:0:0:0 FF01:0:0:0:0:0:0:0 FF02:0:0:0:0:0:0:0 FF03:0:0:0:0:0:0:0 FF04:0:0:0:0:0:0:0 FF05:0:0:0:0:0:0:0 FF06:0:0:0:0:0:0:0 FF07:0:0:0:0:0:0:0 FF08:0:0:0:0:0:0:0 FF09:0:0:0:0:0:0:0 178 NWA1120 Series User's Guide

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Appendix D IPv6
NWA1120 Series User’s Guide
178
Global Address
A global address uniquely identifies a device on the Internet. It is similar to a “public IP address” in
IPv4. A global unicast address starts with a 2 or 3.
Unspecified Address
An unspecified address (0:0:0:0:0:0:0:0 or ::) is used as the source address when a device does
not have its own address. It is similar to “0.0.0.0” in IPv4.
Loopback Address
A loopback address (0:0:0:0:0:0:0:1 or ::1) allows a host to send packets to itself. It is similar to
“127.0.0.1” in IPv4.
Multicast Address
In IPv6, multicast addresses provide the same functionality as IPv4 broadcast addresses.
Broadcasting is not supported in IPv6. A multicast address allows a host to send packets to all hosts
in a multicast group.
Multicast scope allows you to determine the size of the multicast group. A multicast address has a
predefined prefix of ff00::/8. The following table describes some of the predefined multicast
addresses.
The following table describes the multicast addresses which are reserved and can not be assigned
to a multicast group.
Table 51
Predefined Multicast Address
MULTICAST ADDRESS
DESCRIPTION
FF01:0:0:0:0:0:0:1
All hosts on a local node.
FF01:0:0:0:0:0:0:2
All routers on a local node.
FF02:0:0:0:0:0:0:1
All hosts on a local connected link.
FF02:0:0:0:0:0:0:2
All routers on a local connected link.
FF05:0:0:0:0:0:0:2
All routers on a local site.
FF05:0:0:0:0:0:1:3
All DHCP severs on a local site.
Table 52
Reserved Multicast Address
MULTICAST ADDRESS
FF00:0:0:0:0:0:0:0
FF01:0:0:0:0:0:0:0
FF02:0:0:0:0:0:0:0
FF03:0:0:0:0:0:0:0
FF04:0:0:0:0:0:0:0
FF05:0:0:0:0:0:0:0
FF06:0:0:0:0:0:0:0
FF07:0:0:0:0:0:0:0
FF08:0:0:0:0:0:0:0
FF09:0:0:0:0:0:0:0