3Com 7600 manual As shown. The traffic management is performed as follows

Traffic Management in the Network 13-7

TrafficFigure 13-2 below shows a network scenario, where two 7600 Cards, Management in the denoted by source station and destination station are found with an ATM

Network	cloud between them. The shaded area between the stations represents a
	VCC connection over which a data flow and an RM-cell flow takes place
	as shown. The traffic management is performed as follows:

1A forward RM cell is sent at regular intervals on each VC from the source end station.

2The EFCI bit is set in data cells by the ATM switch when congestion is found along the VC path.

3The destination end station recognizes the EFCI bit and the backward RM cell congestion indicator bit is set.

4The backward RM cell is returned to the source end station through the ATM switch.

5VC traffic flow is altered based on information in the RM cell.

Figure 13-2Traffic Management control steps