I-D ACTION:draft-guo-mboned-mfec-framework-01.txt

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	Title		: Multicast Forwarding Equivalence Class [MFEC]
	Author(s)	: F. Guo
	Filename	: draft-guo-mboned-mfec-framework-01.txt
	Pages		: 12
	Date		: 2007-12-27
	
At present, the multimedia services such as IPTV are gaining 
  importance. Multicast technologies play an inevitable role in these 
  multimedia services.  
   
  The main factors affecting the multicast technologies are the 
  convergence speed and the capacity of the multicast routing table. 
   
  One of the easiest and the most commonly practiced methods in 
  nowadays multicast deployment is to push the data to the end router 
  by static configurations (igmp static group). This will reduce the 
  delay in channel switching. The data flow of multiple channels from 
  one or several servers are transmitted along the distribution tree. 
  The distribution tree for multiple channels may be composed of only 
  one same distribution tree. A router, however, maintains separate 
  protocol-status and provides separate protocol-packets content for 
  each channel. This prolongs the route convergence, increases the 
  status-space and reduces the exchange rate of protocol-packets.  
   
  This document proposes a solution to speed up the route convergence, 
  reduce the states in the multicast forwarding table and increase the 
  exchange rate of packets. This can be achieved by using the same 
  state for the data flows that passes the same path in the 
  distribution tree. This same state is called Multicast Forwarding 
  Equivalent Class (MFEC). In other words, MFEC is a group of multicast 
  packets that are forwarded over the same path with the same traffic 
  handling treatment. This solution extends various multicast protocols 
  such as PIM- SSM, PIM-SM, Bidir-PIM, PIM-DM and DVMRP, and perfects 
  application of multicast.

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