Cisco 2950 Software Configuration Guide - Page 256
Clearing and Resetting Interfaces and Counters
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Monitoring and Maintaining the Interfaces Chapter 11 Configuring Interface Characteristics Table 11-2 show Commands for Interfaces (continued) Command show ip interface [interface-id] show running-config interface [interface-id] show version Purpose Display the usability status of all interfaces configured for IP or the specified interface. Display the running configuration in RAM for the interface. Display the hardware configuration, software version, the names and sources of configuration files, and the boot images. For examples of the output from these commands, refer to the command reference for this release and to the Cisco IOS Interface Command Reference for Cisco IOS Release 12.1. If you enter the show interfaces interfaces-id privileged EXEC command on a LRE switch interface, the command output shows the statistics for the LRE interface. It does not show the statistics for the 10/100 Ethernet ports on the attached CPE device. The output also shows that the speed and duplex settings of the LRE interface are never autonegotiated but are always forced (in other words, the speed and duplex settings will be 100 Mbps and half duplex, 100 Mbps and full duplex, 10 Mbps and half duplex, or 10 Mbps and full duplex). Clearing and Resetting Interfaces and Counters Table 11-3 lists the privileged EXEC mode clear commands that you can use to clear counters and reset interfaces. Table 11-3 Clear Commands for Interfaces Command clear counters [interface-id] clear interface interface-id clear line [number | console 0 | vty number] Purpose Clear interface counters. Reset the hardware logic on an interface. Reset the hardware logic on an asynchronous serial line. 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. Note The clear counters privileged EXEC command does not clear counters retrieved by using Simple Network Management Protocol (SNMP), but only those seen with the show interfaces privileged EXEC command output. This example shows how to clear and reset the counters on a port: Switch# clear counters fastethernet0/5 Clear "show interface" counters on this interface [confirm] y Switch# *Sep 30 08:42:55: %CLEAR-5-COUNTERS: Clear counter on interface FastEthernet0/5 by vty1 (171.69.115.10) Use the clear interface or clear line privileged EXEC command to clear and reset an interface or serial line. Under most circumstances, you do not need to clear the hardware logic on interfaces or serial lines. 11-16 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
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