ZyXEL P-2812HNU-F1 User Guide - Page 364

Link-local Address, Global Address, Unspecified Address, Loopback Address, Multicast Address

Page 364 highlights

Appendix F IPv6 Link-local Address A link-local address uniquely identifies a device on the local network (the LAN). It is similar to a "private IP address" in IPv4. You can have the same link-local address on multiple interfaces on a device. A link-local unicast address has a predefined prefix of fe80::/10. The link-local unicast address format is as follows. Table 110 Link-local Unicast Address Format 1111 1110 10 10 bits 0 54 bits Interface ID 64 bits 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 111 Predefined Multicast Address MULTICAST ADDRESS FF01:0:0:0:0:0:0:1 FF01:0:0:0:0:0:0:2 FF02:0:0:0:0:0:0:1 FF02:0:0:0:0:0:0:2 FF05:0:0:0:0:0:0:2 FF05:0:0:0:0:0:1:3 DESCRIPTION All hosts on a local node. All routers on a local node. All hosts on a local connected link. All routers on a local connected link. All routers on a local site. All DHCP severs on a local site. 364 P-2612HNU-Fx User's Guide

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Appendix F IPv6
P-2612HNU-Fx User’s Guide
364
Link-local Address
A link-local address uniquely identifies a device on the local network (the LAN). It
is similar to a “private IP address” in IPv4. You can have the same link-local
address on multiple interfaces on a device. A link-local unicast address has a
predefined prefix of fe80::/10. The link-local unicast address format is as follows.
Table 110
Link-local Unicast Address Format
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.
1111 1110 10
0
Interface ID
10 bits
54 bits
64 bits
Table 111
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.