Port Status and Configuration
Viewing Port Status and Configuring Port Parameters
Enabling or Disabling Flow Control
Note Flow control is enabled by default on the downlink ports. You must enable
flow control on the uplink ports in a given link. Otherwise, flow control does
not operate on the link, and appears as Off in the show interfaces brief port
listing, even if flow control is configured as enabled on the port in the switch.
(Refer to Figure 10-3 on page 10-9.) Also, the port (speed-duplex) mode must
be set to Auto (the default).
To disable flow control on some ports, while leaving it enabled on other ports,
just disable it on the individual ports you want to exclude.
Syntax:
[ no ]interface < port-list > flow-control
Enables or disables flow control packets on the port. The “no”
form of the command disables flow control on the individual
ports. (Default: Disabled.)
For example, suppose that:
1. You want to enable flow control on ports A1-A6.
2. Later, you decide to disable flow control on ports A5 and A6.
3. As a final step, you want to disable flow control on all ports.
Assuming that flow control is currently disabled on the switch, you would use
these commands:
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