Cisco Nexus 9000 Series Configuration Manual page 158

Configuring a Link Level Flow Control Watchdog Interval
• PFC must be enabled at the interface. PFCWD must be enabled at the interface and globally. LLFC
• Auto-restore and fixed restore should never be configured to 0.
SUMMARY STEPS
1. configure terminal
2. priority-flow-control watch-dog interval value
3. priority-flow-control auto-restore multiplier value
4. (Optional) show queuing llfc-queue [interface interface-list] [module module] [detail]
5. (Optional) clear queuing llfc-queue [interface interface-list] [module module]
DETAILED STEPS
Command or Action
Step 1 configure terminal
Example:
switch# configure terminal
switch(config)#
Step 2
priority-flow-control watch-dog interval value
Example:
switch(config)# priority-flow-control watch-dog
interval 200
Step 3 priority-flow-control auto-restore multiplier value
Example:
switch(config)# priority-flow-control auto-restore
multiplier 50
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide, Release 7.x
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• N9K-X97160YC-EX
shouldn't be configured on the same interface.
Note PFC watchdog uses a command to send a syslog message indicating that the
queue is "stuck" (priority-flow-control watch-dog-interval on disable-action).
If this command is invoked on a PFC interface, the queue isn't shut down but
instead, the syslog message is generated. When the LLFC watchdog feature is
enabled, and if a link level flow control packet is received on an interface, the
queue is shut even with the disable-action command for PFC watchdog is enabled.
Configuring Link Level Flow Control
Purpose
Enters global configuration mode.
Specifies the watchdog interval value. The range is from
100 to 1000 milliseconds.
Configures a value for the auto-restore multiplier. The range
is from 0 to 100.
Note The auto-restore multiplier should never be
configured to 0.