RFC 2698 (rfc2698) - Page 4 of 5

A Two Rate Three Color Marker

RFC 2698             A Two Rate Three Color Marker        September 1999


5. Service Example

   The trTCM can be used to mark a IP packet stream in a service, where
   different, decreasing levels of assurances (either absolute or
   relative) are given to packets which are green, yellow, or red.  For
   example, a service may discard all red packets, because they exceeded
   the peak rate, forward yellow packets as best effort, and forward
   green packets with a low drop probability.

6. Security Considerations

   The trTCM has no known security concerns.

7. References

   [RFC 2697] Heinanen, J. and R. Guerin, "A Single Rate Three Color
               Marker", RFC 2697, September 1999.

   [RFC 2597] Heinanen, J., Baker, F., Weiss, W. and J. Wroclawski,
               "Assured Forwarding PHB Group", RFC 2597, June 1999.

   [RFC 2474]   Nichols, K., Blake, S., Baker, F. and D. Black,
               "Definition of the Differentiated Services Field (DS
               Field) in the IPv4 and IPv6 Headers", RFC 2474, December
               1998.

   [RFC 2475]   Blake, S., Black, D., Carlson, M., Davies, E., Wang, Z
               and W. Weiss, "An Architecture for Differentiated
               Services",  RFC 2475, December 1998.

8. Authors' Addresses

   Juha Heinanen
   Telia Finland, Inc.
   Myyrmaentie 2
   01600 Vantaa, Finland

   EMail: jh@telia.fi


   Roch Guerin
   University of Pennsylvania
   Department of Electrical Engineering, Rm 367 GRW
   200 South 33rd Street
   Philadelphia, PA 19104

   EMail: guerin@ee.upenn.edu




Heinanen & Guerin            Informational