
RObust Header Compression (ROHC) Profile Identifiers 
- per [RFC4995]

(last updated 2007-07-30)

Profile Identifier   Usage			Reference
------------------   ----------------------     ---------
0x0000               ROHC uncompressed          [RFC4995]
0xnn00               Reserved
0x0001               ROHC RTP                   [RFC3095]
0xnn01               Reserved
0x0002               ROHC UDP                   [RFC3095]
0xnn02               Reserved
0x0003               ROHC ESP                   [RFC3095]
0xnn03               Reserved
0x0004               ROHC IP                    [RFC3843]
0xnn04               Reserved
0x0005               ROHC LLA                   [RFC4362]
0x0105               ROHC LLA with R-mode       [RFC3408]
0xnn05               Reserved                   
0x0006               ROHC TCP                   [RFC4996]
0xnn06               Reserved
0x0007               ROHC RTP/UDP-Lite          [RFC4019]
0xnn07               Reserved
0x0008               ROHC UDP-Lite              [RFC4019]
0xnn08               Reserved
0x0009-0xnn7F        To be Assigned by IANA
0xnn80-0xnnFE        To be Assigned by IANA
0xnnFF               Reserved

profile identifier: Specification Required

There appears to be further breakdown:

In the 8 LSBs, the range 0 to 127 is
reserved for IETF standard-track specifications; 
the range 128 to 254 is available for other specifications 
that meet this requirement
(such as Informational RFCs). 
The LSB value 255 is reserved for future extensibility of 
the present specification.


References
----------

[RFC3095]   C. Bormann, C. Burmeister, M. Degermark, H. Fukushima,
            H. Hannu, L. Jonsson, R. Hakenberg, T. Koren, K. Le, 
            Z. Liu, A. Martensson, A. Miyazaki, K. Svanbro, T. Wiebke, 
            T. Yoshimura, and H. Zheng, "RObust Header Compression 
            (ROHC): Framework and four profiles: RTP, UDP, ESP, and
            uncompressed", RFC 3095, June 2001.

[RFC3242]   L. Jonsson and G. Pelletier, "A Link-Layer Assisted ROHC 
            Profile for IP/UDP/RTP", RFC 3242, April 2002.

[RFC3408]   Z. Liu and K. Le, "0-byte Support for R-mode in Extended 
            Link-Layer Assisted ROHC Profile", RFC 3408, November 2002.

[RFC3843]   L-E. Jonsson and G. Pelletier, "RObust Header Compression 
            (ROHC): A Compression Profile for IP", RFC 3843, June 2004.

[RFC4019]   G. Pelletier, "RObust Header Compression (ROHC): Profiles 
            for UDP-Lite", RFC 4019, April 2005.

[RFC4362]   L-E. Jonsson, G. Pelletier and K. Sandlund, "RObust Header 
            Compression (ROHC): A Link-Layer Assisted Profile for IP/UDP/RTP",
            RFC 4362, January 2006.

[RFC4995]   L-E. Jonsson, G. Pelletier, K. Sandlund, "The RObust Header 
            Compression (ROHC) Framework", RFC 4995, July 2007.

[RFC4996]   G. Pelletier, L. Jonsson, K. Sandlund and M. West, "RObust Header 
            Compression (ROHC): A Profile for TCP/IP (ROHC-TCP)", RFC 4996, 
            July 2007.


(created 23 April 2001)

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