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IAB Recommendation for an Intermediate Strategy to Address the Issue of Scaling (RFC1481) Disclosure Number: IPCOM000002309D
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 2 page(s) / 3K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Huitema: AUTHOR


Status of this Memo

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 91% of the total text.

Network Working Group C. Huitema, Chair

Request for Comments: 1481 Internet Architecture Board

July 1993

IAB Recommendation for an Intermediate Strategy to

Address the Issue of Scaling

Status of this Memo

This memo provides information for the Internet community. It does

not specify an Internet standard. Distribution of this memo is



Classless Inter-Domain Routing (CIDR) proposes strategies for address

assignment of the existing IP address space with a view to conserve

the address space and stem the explosive growth of routing tables in

default-route-free routers run by transit routing domain providers

[1]. CIDR is proposed as an immediate term strategy to extend the

life of the current 32 bit IP address space. This strategy presumes

that a suitable long term solution is being addressed within the

Internet technical community.

The basic components of the CIDR plan are: management of the

allocation of Internet address space and provision of a mechanism for

aggregation of routing information. The IP community has published

several RFCs and Internet-Drafts which describe the architecture for

IP address assignment and routing protocols which will promote the

deployment of CIDR. These documents have led to changes in the way

network address are allocated and have prompted enhancements to the

inter-domain and intra-domain routing protocols.

With the CIDR prompted changes in the management of the allocation of

the Internet address space, allocation of blocks of Class C numbers

leads to an explosion of the routing tables. So, it is important

that the techniques for aggregating information in the routing

protocols keep pace with the change in the allocation of IP numbers.

The IAB endorses the CIDR architecture and its implementation. In

addition, the IAB supports the actions taken by the IANA and

InterNIC, the router vendors, and the network operators to implement

CIDR to address the scaling problem that we are facing with the

growth of the Internet.


[1] Fuller, V., Li, T., Yu, J., and K. Varadhan, "Supernetting: an

Address Assignment and Aggregation Strategy", RFC 1338, BARRNet,

cisco, Merit, OARnet, June 1992.

[2] Gerich, E., "Guidelines for management of IP Address Space", RFC

1466, Merit, May 1993.

[3] Topolcic, C., "Schedule for IP Address Space Management

Guidelines", RFC 1367, CNRI, October 1992.

[4] Rekhter, Y., and T. Li, "An Architecture for IP Address

Allocation with CIDR", Work in Progress, January 1993.

[5] Rekhter, Y., and C. Topolcic, "Exchanging Routing Information

across Provider/Subscriber Boundaries in CIDR environment", Work

in Progress, February 1993.

Security Considerations

Security issues are not discussed in this memo.

Author's Address