Network Working Group C. Topolcic
Request for Comments: 1367
Schedule for IP Address Space Management Guidelines
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard. Distribution of this memo is
This memo suggests a schedule for the implementation of the IP
network number allocation plan described in RFC 1366
. This schedule
is meant to support the implementation and deployment of an address
aggregation mechanism for the Internet by proposing an achievable
target for which we can all aim. The timely deployment of that
aggregation mechanism and the IP addressing plan will help the the
size of the Internet router forwarding tables and management of the
IP address space. By doing so, it will help the current Internet
addressing and routing technology operate during the interim period
until the next generation technology is deployed. This interim
solution in no way constrains the selection of the next generation
addressing and routing technology.
This draft schedule was put together by the FNC Engineering and
Planning Group (FEPG) based on the IP addressing plan BOF of the July
1992 IETF meeting, as well as discussions with a number (though, of
course, not all) of knowledgeable and interested parties, including
the IANA and IR. This draft schedule assumes that the address
aggregation mechanism will be available in the Internet by mid-1993.
The activities described in this schedule are the precursors to that
deployment, and will promote the efficient operation of that
mechanism. We feel that our assumptions are realistic and that this
schedule can be met. We encourage its open discussion as we move
toward community consensus.
Please send comments to email@example.com, or to the
mailing list firstname.lastname@example.org. To be added to this
mailing list, send a request to email@example.com.
Note that the references below to an addressing plan and to criteria
for regional address registries refer to RFC 1366
Draft Implementation Schedule for IP Network Number Allocation Plan:
1) 31 October 92:
The following address allocation procedures are continued:
a) Initial set of criteria for selecting regional address
registries will be put into place, and requests from
prospective regional registries will be accepted by the
b) Class A network numbers are practically impossible to
c) Class B network numbers will continue to be issued only when
reasonably justified. If possible, a block of C's will be
issued rather than a B. The requirements for allocating a
Class B will become progressively more constrained until the
date in step (3).
d) Class C network numbers will be allocated according to the
addressing plan. Allocation will be performed by the
Internet Registry (IR) if an appropriate regional registry
has not yet been designated by the IANA.
2) 14 February 93:
Re-evaluate and readjust the schedule if necessary.
3) 15 April 93:
a) The IR begins to allocate all networks according to the
addressing plan in appropriately sized blocks of Class C
b) Class B network numbers will be difficult to obtain,
following the recommendation of the addressing plan and only
issued when justified.
4) 6 June 93:
Expected date that an address aggregation mechanism is
available in the Internet.
 Gerich, E., "Guidelines for Management of IP Address Space", RFC 1366
, Merit, October 1992.