Cisco Catalyst 2950

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show storm-control
Table 2-29 lists the show storm-control field descriptions.
This is an example of output from the show storm-control fastethernet0/4 history command, which
displays the ten most recent storm events for an interface:
Switch> show storm-control fastethernet0/4 history
Interface Fa0/4 Storm Event History
Event Type Event Start Time Duration (seconds)
------------------ ---------------- ------------------
Unicast 04:58:18 206
Broadcast 05:01:54 n/a
Multicast 05:01:54 n/a
Unicast 05:01:54 108
Broadcast 05:05:00 n/a
Multicast 05:05:00 n/a
Unicast 05:06:00 n/a
Broadcast 05:09:39 n/a
Multicast 05:09:39 n/a
Broadcast 05:11:32 172
Table 2-29 show storm-control Field Descriptions
Field Description
Interface Displays the ID of the interface.
Filter State Displays the status of the filter:
• Blocking—Storm control is enabled, action is filter, and a storm has
occurred.
• Forwarding—Storm control is enabled, and a storm has not occurred.
• Inactive—Storm control is disabled.
• Shutdown—Storm control is enabled, the action is to shut down, and a
storm has occurred.
Note If an interface is disabled by a broadcast, multicast, or unicast storm,
the filter state for all traffic types is shutdown.
Trap State Displays the status of the SNMP trap:
• Above rising—Storm control is enabled, and a storm has occurred.
• Below rising—Storm control is enabled, and a storm has not occurred.
• Inactive—The trap option is not enabled.
Upper Displays the rising suppression level as a percentage of total available
bandwidth.
Lower Displays the falling suppression level as a percentage of total available
bandwidth.
Current Displays the bandwidth utilization of a specific traffic type as a percentage
of total available bandwidth. This field is valid only when storm control is
enabled.
Traps Sent Displays the number traps sent on an interface for a specific traffic type.