TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

IPv6 Fundamentals
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012
A-10
Aggregatable Testing Address Format
In the address format shown in Figure A-9, the fields have these definitions:

Format Prefix
The format prefix. For aggregatable global unicast addresses, the value for this
field is 001.

TLA ID
The top-level aggregation identifier.

Reserved
Reserved for future use. At present, set to all zeros (0).

NLA ID
The Next-level aggregation identifier. These are assigned by the TLA ID
administrator to create an addressing hierarchy and to identify end user sites. Each
organization assigned a TLA ID is also assigned 24-bits of NLA ID space whose
layout and use is the responsibility of the organization.

SLA ID
The site-level aggregation identifier. These are used by an end user site to create
its own local addressing hierarchy and to identify SUBNETs.

Interface ID
The 64-bit interface identifier of the interface that is connected to the link.
Aggregatable Testing Address Format
Aggregatable global unicast addresses for IPv6 testing have the form shown in
Figure A-10
on page A-11. For more information about the proposed testing address
allocation plan, see RFC 2471.
Figure A-9. Aggregatable Global Address Format
0
127
3
bits
VST152.vsd
13
bits
8
bits
24 bits
Format
Prefix
Reserved
16 bits
64 bits
NLA ID
SLA ID Interface ID
TLA
ID