Network load control
Basic - L3P
Release
4.0
11/07
8.5
Flow control
33
Figure 40: Example of flow control
Flow control with a full duplex link
In the example (see fig. 40) there is a full duplex link between Workstation
2 and the Switch.
Before the send queue of port 2 overflows, the Switch sends a request to
Workstation 2 to include a small break in the sending transmission.
Flow control with a half duplex link
In the example (see fig. 40) there is a half duplex link between Worksta-
tion 2 and the Switch.
Before the send queue of port 2 overflows, the Switch sends data back so
that Workstation 2 detects a collision and interrupts the sending process.
Switch
Port 3Port 2
Port 1 Port 4
Workstation 1 Workstation 2 Workstation 3 Workstation 4
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