Using the BayStack 450 10/100/1000 Series Switch
3-64 309978-D Rev 01
You can choose Symmetric or Asymmetric flow control mode.
Symmetric Mode
This mode allows both the gigabit MDA port and its link partner to send flow
control pause frames to each other.
When a pause frame is received (by either the gigabit MDA port or its link
partner), the port suspends transmission of frames for a number of slot times
specified in the control frame or until a pause-release control frame is received.
Both devices on the link must support this mode when it is selected.
Asymmetric Mode
This mode allows the link partner to send flow control pause frames to the gigabit
MDA port. When a pause frame is received, the receiving port suspends
transmission of frames for a number of slot times specified in the control frame or
until a pause-release control frame is received.
In this mode the gigabit MDA port is disabled from transmitting pause frames to
its link partner. Use this mode when the gigabit MDA port is connected to a
buffered repeater device.
MultiLink Trunk Configuration
The MultiLink Trunk Configuration Menu (Figure 3-25) allows you to select the
appropriate screen to configure up to six MultiLink trunks (you can group up to
four switch ports to form each trunk).
You can configure up to six MultiLink trunks in each stack, with trunk members in
either a single unit or distributed between units within the stack configuration
(distributed trunking).
You can monitor the bandwidth usage for the trunk member ports within each
trunk. For more information about configuring MultiLink Trunks, see “
MultiLink
Trunks” on page 1-78.
Note: When a trunk is not active (Trunk Status field set to Disabled),
configuration changes do not take effect until you set the Trunk Status field to
Enabled.
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