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Download Cisco Systems 6500 Switch User Manual
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Chapter 2 Catalyst 6500 Series Switch and ROM Monitor Commands show mac show mac To display MAC counters, use the show mac command. show mac [utilization] [mod[/port]] Syntax Description utilization (Optional) Displays approximated packet and byte rates. mod/[/port] (Optional) Number of the module and optionally, the number of the port on the module. Defaults This command has no default settings. Command Types Switch command. Command Modes Normal. Usage Guidelines The utilization keyword is not supported on ATM ports. If you do not specify a module number, all modules are shown. If you do not specify a port number, all ports are shown. The Out-Discards field displays the number of outbound packets chosen to be discarded even though no errors had been detected to prevent being transmitted. For example, an outbound link is overwhelmed by switch traffic. Packets dropped are the ones destined for that port, but the port could not accept those packets due to XMT buffer overflow. The Xmit-Packet-Rate, Xmit-Octet-Rate, Rcv-Packet-Rate, and Rcv-Octet-Rate fields display approximated average utilization rates rather than exact values. The approximated average is based on the previous approximation values, the last counter values read from hardware, the load time interval (fixed at 5 minutes), and the polling interval. Examples This example shows how to display MAC information for port 1 on module 3: Console> show mac 3/1 Port Rcv-Unicast Rcv-Multicast Rcv-Broadcast -------- -------------------- -------------------- -------------------3/1 0 22636 1 Port Xmit-Unicast Xmit-Multicast Xmit-Broadcast -------- -------------------- -------------------- -------------------3/1 3690 1888064 305202 Port Rcv-Octet Xmit-Octet -------- -------------------- -------------------3/1 9310072 162180717 MAC Dely-Exced MTU-Exced In-Discard Out-Discard Catalyst 6500 Series Switch Command Reference—Release 8.1 2-831 78-15474-01
