Есть ли результаты ?

Проверил, всё работает нормально.

P.S.:
14 Enabled/60/S Enabled/60/S Disabled/128000/D 5 0

config traffic control 14 broadcast enable action shutdown threshold 60 time_interval 5 countdown 0

Из manual: <minutes 0>  0 is the default setting for this field and 0 will denote that the port will never shutdown.

Если countdown 0, т о порт не будет отключаться вообще.

На тестовом стенде:
config traffic control 14 broadcast enable action shutdown threshold 60 time_interval 5 countdown 5

DES-3526:admin#sh log
Command: show log

Index Time Log Text
----- ------------------- ----------------------------------------------------
1 00000 days 01:41:06 Broadcast storm is occurring (port: 14)

DES-3526:admin#sh ports 14
Command: show ports 14
Port State/ Settings Connection Address Trap
MDIX Speed/Duplex/FlowCtrl Speed/Duplex/FlowCtrl Learning State
----- ---------- --------------------- --------------------- -------- --------
14 Enabled Auto/Disabled Err-Disabled Enabled Enabled
Auto

DES-3526:admin#show traffic control
Command: show traffic control
Traffic Storm Control Trap : Both

Port Broadcast/ Multicast/ Unicast/ Time Count
Threshold/Action Threshold/Action Threshold/Action Interval down
(Action Indication D:drop S:shutdown *:port shutdown)
---- ------------------ ------------------ ------------------ -------- -----
...
14 Enabled/60/*S Enabled/60/*S Disabled/128000/*D 5 5

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