Note: For 64-bit counters, IF-MIB are provided to prevent overflow as the port speed reaches 1GB and the 32-bit counters become impractical. You must enable the 64-bit counters through the CLI command line, in engineering mode, or all 64-bit counters will return 0. Refer to the user manual for the device for information about using the engineering mode from the command line.
The following categories of information are available:
Interface Monitors interface traffic for the port. Bridge and Displays bridging activity for the port. Ethernet Errors Displays error counts for an Ethernet port. FDDI Displays FDDI activity for the port. Transmit Collisions Displays transmit collisions for a repeater port. Token Ring Errors Displays Token Ring errors performance information. Source Route Frames Displays source-route frames performance data. Flow Control Displays flow control information for gigabyte ports. PAgP Statistics Displays the PagP-related statistics information for a port.Layer2 Protocol Tunneling Statistics
Displays the Layer2 protocol tunneling statistics for this interface.
To monitor the traffic and utilization levels of all the ports in a module, select the module, hold down the right mouse button, and select Port Utilization from the drop-down menu.
Port>Monitor>Interface
To monitor port interface information, select Interface from the CATEGORY popup menu.
The following information is displayed:
Utilization
Level of utilization on the port. The current value represents the utilization levels over the last polling period. The utilization percentage is calculated using the following formula:
For half duplex port: 8 * DELTA_OCTETS * 100 / (DELTA_TIME * ifSpeed) For full duplex port: 8 * DELTA_OCTETS * 100 / (DELTA_TIME * 2 * ifSpeed) where DELTA_OCTETS = (ifInOctets1 + ifOutOctets1) - (ifInOctets0 + ifOutOctets0)Note: This field displays an absolute value.
DELTA_TIME = (sysUpTime1 - sysUpTime0)/100 ---> in seconds (sysUpTime will be in hundredths of a second. Divide by 100 to see in seconds.)
ifSpeed is speed of the interface (Example: 10000000 for 10Mbps port) ifInOctets0 is ifInOctets value at sysUpTime0, and ifInOctets1 is ifInOctets value at sysUpTime1
ifOutOctets0 is ifOutOctets value at sysUpTime0, and ifOutOctets1 is ifOutOctets value at sysUpTime1
(Example: If the monitor chart is at a refresh rate of 30 sec, and if ifInOctets0 is at 12:10:20, then ifInOctets1 will be at 12:10:50)
Unicasts (ifInUcastPkts + ifOutUcastPkts)
Pattern and current number of Unicast packets received and sent.
Broadcasts (ifExtnsBroadcastsTransmittedOks + ifExtnsBroadcastsReceivedOks)
Total number of frames successfully transmitted to a subnetwork or link-layer broadcast address and broadcast frames successfully received.
Multicasts (ifExtnsMulticastsTransmittedOks + ifExtnsMulticastsReceivedOks)
Total number of frames successfully transmitted to a subnetwork or link-layer multicast address and successfully received multicast frames.
Errors (ifInErrors + ifOutErrors)
Number of total errors for the port. The value is the total of inbound and outbound packets discarded because they contained errors.
Discards (ifInDiscards + ifOutDiscards + ifInUnknownProtos)
Total number of discards for the port. The value is the total number of inbound and outbound packets discarded because they contained errors and the number of inbound packets discarded because they were directed to an unknown or unsupported protocol.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
The fields in monitor dialog boxes display either absolute or differential values:
An absolute value indicates the value recorded for a monitor object at a specific polling time.
A differential value is determined by subtracting the value recorded for a monitor object at the previous polling interval from the value recorded at the current polling interval.
Unless otherwise noted, the fields in this dialog box display differential values.
Port>Monitor>Bridge
The following information is displayed in this dialog box:
VLAN Number (dot1dTpPort)
In PVST+ mode, the bridge instance number is the VLAN number this port
belongs to. The default value of this object is displayed as the native VLAN
of this port.
Note: There can be more than one valid VLAN for a trunk port, and
bridge details can be obtained for each of these VLANs.
In MISTP and MST mode, the bridge instance number is the MISTP/MST
instance number of the native VLAN this port belongs to. For MISTP, the
default value is the MISTP instance number mapped to this port's native VLAN.
For MST, the default value is zero.
Note: Since a trunk port can have more than one valid VLAN, multiple
bridge instances are also valid.
Click Monitor to launch the Bridge Monitor dialog box. Click Cancel to close the dialog box. Click Refresh to update the contents of the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Port>Monitor>Bridge>Instance Based Bridge
The following information is displayed in this dialog box:
STP Instance Number (dot1dStpInstance)
In MISTP and MST mode, the bridge instance number is the MISTP/MST
instance number of the native VLAN this port belongs to. For MISTP, the
default value is the MISTP instance number mapped to this port's native VLAN.
For MST, the default value is zero.
Note: Since a trunk port can have more than one valid VLAN, multiple
bridge instances are also valid.
Click Monitor to launch the Bridge Monitor dialog box. Click Cancel to close the dialog box. Click Refresh to update the contents of the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Port>Monitor>Ethernet Errors
To monitor activity on an Ethernet port, on the CiscoView Monitor Port window, select Ethernet Errors from the CATEGORY popup menu. The CiscoView Monitor Port window displays the following information:
Alignments (dot3StatsAlignmentErrors)
Number of frames with an alignment error. This means that the length is not an integral number of octets and the frame cannot pass the FCS test. Alignment errors are usually caused by a nonlocal network problem.
Frame Checks (dot3StatsFCSErrors)
Pattern of occurrences and latest count of frames with an alignment error, indicating that there is an integral number of octets but an incorrect FCS.
MAC Tx (dot3StatsInternalMacTransmitErrors)
Number of frames for which transmission failed because of an internal MAC layer transmit error, that is, transmit errors not picked up in any other count.
MAC Rx (dot3StatsInternalMacReceiveErrors)
Number of frames for which reception failed because of an internal MAC layer receive error, that is, the receive errors not picked up in any other count.
Carrier Sense (dot3StatsCarrierSenseErrors)
Number of transmission attempts that failed because the carrier sense condition was lost or never asserted.
Giant Frames (dot3StatsFrameTooLongs)
Number of received frames that were bigger than the maximum permitted size. A giant frame indicates a non-local software error occurred or that a protocol using nonstandard frame lengths is in use.
SQE Test (dot3StatsSQETestErrors)
Number of times that the Signal Quality Error TEST ERROR message was generated by the interface.
Deferred Tx (dot3StatsDeferredTransmissions)
Number of frames whose transmission was delayed because of an error.
Single Collisions (dot3StatsSingleCollisionFrames)
Pattern of occurrences and number of successfully transmitted frames for which there was exactly one collision.
Multi Collisions (dot3StatsMultipleCollisionFrames)
Pattern of occurrences and number of successfully transmitted frames for which there were multiple collisions.
Late Collisions (dot3StatsLateCollisions)
Number of times that a collision was detected later than 64 octets into the transmission. (The total number of late collisions is added into the collision count.) Late collisions indicate either that the network has too large a propagation delay between the reporting station and some other stations, or that some other station is not detecting/responding to collisions correctly.
Excess Collisions (dot3StatsExcessiveCollisions)
Pattern of occurrences and latest number of frames for which transmission failed because of excessive collisions.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
The fields in monitor dialog boxes display either absolute or differential values:
An absolute value indicates the value recorded for a monitor object at a specific polling time.
A differential value is determined by subtracting the value recorded for a monitor object at the previous polling interval from the value recorded at the current polling interval.
Unless otherwise noted, the fields in this dialog box display differential values.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
The fields in monitor dialog boxes display either absolute or differential values:
An absolute value indicates the value recorded for a monitor object at a specific polling time.
A differential value is determined by subtracting the value recorded for a monitor object at the previous polling interval from the value recorded at the current polling interval.
Unless otherwise noted, the fields in this dialog box display differential values.
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.
The fields in monitor dialog boxes display either absolute or differential values:
An absolute value indicates the value recorded for a monitor object at a specific polling time.
A differential value is determined by subtracting the value recorded for a monitor object at the previous polling interval from the value recorded at the current polling interval.
Unless otherwise noted, the fields in this dialog box display differential values.
For half duplex port: 8 * DELTA_OCTETS * 100 / (DELTA_TIME * ifSpeed) For full duplex port: 8 * DELTA_OCTETS * 100 / (DELTA_TIME * 2 * ifSpeed) where DELTA_OCTETS = (ifInOctets1 + ifOutOctets1) - (ifInOctets0 + ifOutOctets0)Port Number of the port for which traffic statistics are gathered. The module number is listed first, followed by a period and the port number. Current Traffic and utilization level for this port in the most recent 60-seond interval. Average Average traffic and utilization level for this port since polling of this module began. Peak Highest recorded traffic and utilization level for this port since polling of this module began. Peaktime Date and time at which the peak traffic level for this port was recorded.
DELTA_TIME = (sysUpTime1 - sysUpTime0)/100 ---> in seconds (sysUpTime will be in hundredths of a second. Divide by 100 to see in seconds.)
ifSpeed is speed of the interface (Example: 10000000 for 10Mbps port) ifInOctets0 is ifInOctets value at sysUpTime0, and ifInOctets1 is ifInOctets value at sysUpTime1
ifOutOctets0 is ifOutOctets value at sysUpTime0, and ifOutOctets1 is ifOutOctets value at sysUpTime1
(Example: If the monitor chart is at a refresh rate of 30 sec, and if ifInOctets0 is at 12:10:20, then ifInOctets1 will be at 12:10:50)
To specify the refresh rate for this dialog box, select a value from the drop-down box. Click Start/Stop to begin/end device monitoring. Click Cancel to close the dialog box. Click Print to print the contents of the dialog box. Click Help to access online help.
Note: The Start/Stop toggle feature is supported only by CiscoView 5.x.