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+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
+ unlimited.
+
+Recommendation
+
+ 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.
+
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+IAB [Page 1]
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+RFC 1481 IAB on CIDR July 1993
+
+
+References
+
+ [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
+
+ Christian Huitema
+ INRIA, Sophia-Antipolis
+ 2004 Route des Lucioles
+ BP 109
+ F-06561 Valbonne Cedex
+ France
+
+ Phone: +33 93 65 77 15
+ EMail: Christian.Huitema@MIRSA.INRIA.FR
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+IAB [Page 2]
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