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DES-7200 Configuration Guide Chapter 2 IPv6 Configuration
2-5
2. Loopback Address
The loopback address is 0:0:0:0:0:0:0:1, abbreviated as ::1, which is equal to the IPv4
address 127.0.0.1 and used when the node sends the packets to itself.
3. Link-level Local Address
The format of link-level local address:
The link-level local address is used to number the host on the single network link. The
address of former 10-bit identification for the prefix is the link-level local address. The
router will not forward the message of the source address or the destination address
with the link-level local address forever. The intermediate 54-bit of this address is 0.
The latter 64 indicates the interface identifier, this part allows the single network to
connect to up to 2
64
-1 hosts.
4. Site-level Local Address
The format of site-level local address:
The site-level local address can be taken to transmit the data within the site, and the
router will not forward the message of the source address or the destination address
with the site-level local address to Internet. Namely, such packet route can only be
forwarded within the site, but cannot be forwarded to out of the site. Suppose that the
site is the LAN for a company, the site-level local address is similar to the IPv4 private
address, i.e., 192.168.0.0/16. The RFC3879 has repealled the site-level local address.
5. Global Unicast Address
The format of global unicast address: