Realm Specific IP: Framework
RFC 3102
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RFC - Experimental
(October 2001; No errata)
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2013-03-02
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RFC 3102 (Experimental)
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Network Working Group Editors:
Request for Comments: 3102 M. Borella
Category: Experimental CommWorks
J. Lo
Candlestick Networks
Contributors:
D. Grabelsky
CommWorks
G. Montenegro
Sun Microsystems
October 2001
Realm Specific IP: Framework
Status of this Memo
This memo defines an Experimental Protocol for the Internet
community. It does not specify an Internet standard of any kind.
Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2001). All Rights Reserved.
IESG Note
The IESG notes that the set of documents describing the RSIP
technology imply significant host and gateway changes for a complete
implementation. In addition, the floating of port numbers can cause
problems for some applications, preventing an RSIP-enabled host from
interoperating transparently with existing applications in some cases
(e.g., IPsec). Finally, there may be significant operational
complexities associated with using RSIP. Some of these and other
complications are outlined in section 6 of RFC 3102, as well as in
the Appendices of RFC 3104. Accordingly, the costs and benefits of
using RSIP should be carefully weighed against other means of
relieving address shortage.
Abstract
This document examines the general framework of Realm Specific IP
(RSIP). RSIP is intended as a alternative to NAT in which the end-
to-end integrity of packets is maintained. We focus on
implementation issues, deployment scenarios, and interaction with
other layer-three protocols.
Borella, et al. Experimental [Page 1]
RFC 3102 RSIP: Framework October 2001
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Document Scope . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3. Specification of Requirements . . . . . . . . . . . . . . . 5
2. Architecture . . . . . . . . . . . . . . . . . . . . . . . . 6
3. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Host and Gateway Requirements . . . . . . . . . . . . . . . 7
3.2. Processing of Demultiplexing Fields . . . . . . . . . . . . 8
3.3. RSIP Protocol Requirements and Recommendations . . . . . . 9
3.4. Interaction with DNS . . . . . . . . . . . . . . . . . . . 10
3.5. Locating RSIP Gateways . . . . . . . . . . . . . . . . . . 11
3.6. Implementation Considerations . . . . . . . . . . . . . . . 11
4. Deployment . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1. Possible Deployment Scenarios . . . . . . . . . . . . . . . 12
4.2. Cascaded RSIP and NAT . . . . . . . . . . . . . . . . . . . 14
5. Interaction with Layer-Three Protocols . . . . . . . . . . . 17
5.1. IPSEC . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2. Mobile IP . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3. Differentiated and Integrated Services . . . . . . . . . . 18
5.4. IP Multicast . . . . . . . . . . . . . . . . . . . . . . . 21
6. RSIP Complications . . . . . . . . . . . . . . . . . . . . . 23
6.1. Unnecessary TCP TIME_WAIT . . . . . . . . . . . . . . . . . 23
6.2. ICMP State in RSIP Gateway . . . . . . . . . . . . . . . . 23
6.3. Fragmentation and IP Identification Field Collision . . . . 24
6.4. Application Servers on RSAP-IP Hosts . . . . . . . . . . . 24
6.5. Determining Locality of Destinations from an RSIP Host. . . 25
6.6. Implementing RSIP Host Deallocation . . . . . . . . . . . . 26
6.7. Multi-Party Applications . . . . . . . . . . . . . . . . . 26
6.8. Scalability . . . . . . . . . . . . . . . . . . . . . . . . 27
7. Security Considerations . . . . . . . . . . . . . . . . . . . 27
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 27
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 28
10. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 29
11. Full Copyright Statement . . . . . . . . . . . . . . . . . . 30
1. Introduction
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