Asante IntraCore 6524, User Manual

Page: 55 / 150

Advanced Port Configuration
Page 3-27
Current Settings
The settings shown in the top portion of the Advanced Port Configuration
Menu are described in Table 3-8.
Table 3-8 Advanced Port Configuration Menu settings
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. Before you can enable flow control for a port, that
port must be configured to operate in Full Duplex mode.
If you enable flow control on a port, and that port runs short of buffer
resources, the port will transmit PAUSE frames. When it receives them, the link
partner obeys these PAUSE frames. When the low-resource situation is relieved,
the port sends out PAUSE frames with zero time values. This ends the pause
state that was imposed on the end-station.
To enable flow control, take the following steps.
1
Access the Port Configuration Menu by typing p in the
Configuration Menu.
2
In the Basic Port Configuration Menu, type a to open the
Advanced Port Configuration Menu.
Setting Description
Module Number The number of the module of which the selected port is a mem-
ber. (Always module 1)
Operating Status This field displays status symbols for each of the current module’s
ports. For details, see the legend in Figure 3-10.
Flow Control The status of flow control for the current port.When enabled, it
allows you to control traffic and avoid congestion, such as when
the port is receiving too much traffic for the available buffer
resources.
Class of Service The status of the class of service for the current port.
Priority The priority ranking for the port regarding data transmission dur-
ing periods of peak or heavy on the traffic. Ports with higher prior-
ity take precedence when there is traffic congestion.