Examples of abnormal configuration scenarios.
If you attempt to configure PFC on a port that does not support it, an error message similar to the following is issued and you will be informed that PFC cannot be configured on that port:
enable flow-control tx-pause priority 3 port 1:1 Error: Port 1:1 does not support Priority Flow Control.
When PFC is enabled on a port, IEEE 802.3x will be disabled. If, after enabling PFC, you try to modify RX or TX pause parameters, an error message similar to the following will be issued explaining the dependency on PFC configuration:
BD8810.1# enable flow-control tx-pause port 1:1 Error: Priority Flow Control is currently enabled on port 1:1 and is mutually exclusive with TX and RX pause configuration. TX and RX pause configuration cannot be done until PFC is disabled on this port.
If you try to configure PFC on a port in a SummitStack before you have configured the SummitStack for enhanced mode, the following error message is issued:
Slot-1 Stack.7 # enable flow-control rx-pause qosprofile qp1 port 1:1 Error: The stack is not configured for enhanced stacking mode. Issue the command "configure stacking protocol enhanced" to enable this mode and retry the PFC configuration.
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