Clearing And Resetting Interfaces And Counters - Cisco WS-C3550-12G Software Configuration Manual

Monitoring and Maintaining the Layer 2 Interface
This example shows how to display the status of switching ports:
Switch# show interfaces switchport
Name: Gi0/1
Switchport: Enabled
Administrative Mode: dynamic desirable
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Protected: True
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Name: Gi0/2
Switchport: Enabled
Administrative Mode: dynamic desirable
Operational Mode: down
Administrative Trunking Encapsulation: negotiate
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Protected: True
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
<output truncated>

Clearing and Resetting Interfaces and Counters

Table 8-3
interfaces.
Table 8-3 Clear Commands for Interfaces
Command
clear counters [interface-id]
clear interface interface-id
clear line [number | console 0 | vty number]
To clear the interface counters shown by the show interfaces privileged EXEC command, use the clear
counters privileged EXEC command. The clear counters command clears all current interface counters
from the interface unless optional arguments are specified to clear only a specific interface type from a
specific interface number.
Catalyst 3550 Multilayer Switch Software Configuration Guide
8-20
lists the privileged EXEC mode clear commands that you can use to clear counters and reset
Purpose
Clear interface counters.
Reset the hardware logic on an interface.
Reset the hardware logic on an asynchronous serial line.
Chapter 8 Configuring Interface Characteristics
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