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Basic Configuration
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6 Enter the rate for broadcast or multicast and press Return.
The new maximum rate is displayed on the Advanced Port Configuration
menu.
Enabling or Disabling 802.3x Flow Control
Use the following procedure to control traffic and avoid congestion, such as
when there is a shortage of buffer resources for the port. Flow control is
accomplished by means of standard PAUSE control frames for each port,
independent of all others. The port must be configured to operate in Full
Duplex mode. If you enable flow control on a port which is overwhelmed (run-
low in the buffer resources), that port will transmit PAUSE frames; the link
partner will obey the PAUSE frame. When the low-resource situation is
relieved, the port sends out PAUSE frames with zero time value to un-pause the
end-station. To enable flow control, first access the Port Configuration menu by
typing p in the Configuration menu, then take the following steps.
1 Choose a module in the System Module Map.
2 In the Basic Port Configuration Menu, type a to open the
Advanced Port Configuration menu.
3 Use s, n, or p to select the port for which you want to
enable or disable flow control.
4 Type f to toggle flow control for the selected port.
The flow control symbol for the selected port reflects its change in state, as does
the 802.3x Flow Control setting.
▲ Important: The link partner must be configured to recog-
nize PAUSE frames when using this method of flow con-
trol.
Setting Port Default Priority
Use the following procedure to set a higher or lower priority for a port. This
priority setting determines the order in which the port forwards packets. Each
port is associated with a traffic class; 0 (zero) is the lowest, and the default
priority level, and 1 is the highest priority level.
1 Access the Port Configuration menu by typing p in the
Configuration menu.
2 Choose a module in the System Module Map.
GLXY9.book Page 24 Thursday, February 17, 2000 3:04 PM