Description:show interfacescounter. /CropBox [0 0 612 792] switch - Cisco Command to display link status - Network Engineering endobj Port Status : Secure-down. /Rotate 0 The two options are single mode fiber (SMF) or multimode fiber (MMF). Checking Port Status and Connectivity - Cisco Helpful with the search for software/hardware incompatibilities (with theRelease NotesorSoftware Advisor) and bugs (with theSoftware Bug Toolkit). /Border [0 0 0] To trace the path that packets take through the network, perform this task in privileged mode: Execute IP traceroute to trace the path packets take through the network. InCisco IOS software you have the ability to automatically re-enable a port after a configurable amount of time spent in the errdisable state. Without attenuators, the minimum link distance is 24.9 miles (40 km). /B [27 0 R 28 0 R] /Rect [162 320.8800048828 286.5599975586 332.1600036621] It would be counted on theshow interfaceoutput for the appropriate physical interface. Cisco IOS error counter output forshow interfacesorshow interfaces counters errorsfor the Catalyst 6000 and 4000 Series. OnCatalyst 4000 Seriesrcv-err = the sum of all receive errors, which means, in contrast to the Catalyst 5000, that the rcv-err counter increments when the interface receives an error like a runt, giant or FCS-Err. If you have device A connected to device B over a Gigabit link, and the link does not come up, perform this procedure. The Catalyst4912G, 2948G, and 2980G switches are fixed-configuration switches, but are logically modular. This example shows how to display information about the ports on a specific module only: This example shows how to display information on an individual port: In addition to displaying the MAC address range for a module using the show module command, you can display the MAC address of a specific port in the switch using the show port mac-address command. In the example, under the show interfaces FastEthernet0/1 command, look at a line that shows something such as: Last input 00:00:41, output 00:00:00, output hang never.

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