Interface Performance

Cisco 7200/7400 Series Manager has two performance options: Performance Menus and the Performance Manager. The difference between these two options is that the Performance Manager displays historical data as well as current data in the form of a line chart, bar chart, or table; performance menus display only current data in a raw numerical format.

Interfaces and Related Technology-Specific Windows

Interfaces on port adapters can support multiple technologies. Performance windows are technology-specific. For example, a POS interface supports two technologies:

Therefore, to view the performance of a POS interface, you need to view two windows:

Generic Interface Performance
SONET Interface Performance

This applies to all types of interfaces: POS, DS-3, ATM, and Ethernet. The following table lists the technology-specific performance windows that apply to each interface type.

Table 9-1 Interface Types and Performance Windows

Interface Type	Technology-Specific Performance Window
DS-3	Generic DS-3
ATM	Generic SONET
Ethernet	Generic Ethernet
POS	Generic SONET

Starting or Stopping Global Performance Logging

You can enable global performance logging on a chassis object, which puts every object in the chassis into performance logging mode. Any objects in the chassis that are capable of collecting performance data (such as interfaces) are enabled.

Step 2 Choose the relevant chassis from the list displayed on the left side of the window.

Performance data can now be viewed through performance menus or through the Performance Manager.

Generic Interface Performance

Viewing the Generic Interface Performance Window

Step 2 Choose the relevant chassis, module, and interface from the list boxes on the left side of the window. The interface performance information for the selected interface appears on tabs on the right side.

Stopping or Starting Performance Logging

You can start or stop performance logging on a selected interface by clicking the appropriate button. Starting performance logging allows performance data to be gathered for the selected module.

Performance polling occurs every 15 minutes. Performance data is then gathered and stored for historical review. You can view current performance data in the performance windows, or you can view historical performance data in Performance Manager.

Generic Interface Performance Window—Detailed Description

The Interface Performance window contains three tabs: Performance (1), Performance (2), and Performance (3).

Performance (1) Tab

The Performance (1) tab contains three areas: General Information, Packets/Octets Statistics, and Performance Logging.

General Information

Resets—Number of times the interface is internally reset.
Transmitted Bandwidth Utilization—Percentage of transmitted bandwidth utilization.
Received Bandwidth Utilization—Percentage of received bandwidth utilization.

Packets/Octets Statistics

In Octets—Number of packets received on the interface, including framing characters.
Out Octets—Number of packets transmitted out of the interface, including framing characters.
In Bits/sec—Five-minute exponentially decayed moving average of input bits per second.
Out Bits/sec—Five-minute exponentially decayed moving average of output bits per second.
In Packets/sec—Five-minute exponentially decayed moving average of input packets per second.
Out Packets/sec—Five-minute exponentially decayed moving average of output packets per second.
In Unicast Packets—Number of packets received by the layer that were not addressed as multicast or broadcast.
Out Unicast Packets—Number of packets transmitted by the layer that were not addressed as multicast or broadcast.
In Multicast Packets—Number of packets transmitted by the layer that were addressed as multicast.
Out Multicast Packets—Number of packets transmitted by the layer that were addressed as multicast.
In Broadcast Packets—Number of packets transmitted by the layer that were addressed as broadcast.
Out Broadcast Packets—Number of packets transmitted by the layer that were addressed as broadcast.

Performance Logging

You can either start or stop performance logging by clicking the appropriate button.

Performance (2) Tab

Error Statistics

Runts—Number of packets input that were smaller than the physical media permitted.
In Errored Packets—Number of inbound packets that contained errors.
Giants—Number of input packets that were larger than the physical media permitted.
In Discarded Packets—Number of inbound packets chosen to be discarded even though no errors were found.
Collisions—Number of output collisions detected on this interface.
In Packets Dropped—Number of packets dropped because the input queue was full.
Aborted Packets—Number of input packets that were aborted.
Out Errored Packets—Number of outbound packets that could not be transmitted because of errors.
Ignored Packets—Number of input packets that were ignored by the interface.
Out Packets Dropped—Number of packets dropped because the output queue was full.
Misaligned Packets—Number of input packets that were misaligned.
CRC Errored Packets—Number of input packets that had cyclic redundancy checksum errors.
Out Discarded Packets—Number of outbound packets discarded even though no errors were found.
Overrun Packets—Number of excess packets detected by the interface.

Performance (3) Tab

The Performance (3) tab contains one area: Packets/Octets Statistics (High Capacity), as shown in Figure 9-4.

The Packets/Octets Statistics (High Capacity) area contains the following fields:

In Octets—Number of packets received on the interface, including framing characters.
Out Octets—Number of packets transmitted out of the interface, including framing characters.
In Unicast Packets—Number of packets received by the layer that were not addressed as multicast or broadcast.
In Multicast Packets—Number of packets transmitted by the layer that were addressed as multicast.
Out Multicast Packets—Number of packets transmitted by the layer that were addressed as multicast.
In Broadcast Packets—Number of packets transmitted by the layer that were addressed as broadcast.
Out Broadcast Packets—Number of packets transmitted by the layer that were addressed as broadcast.

SONET Interface Performance

Viewing the SONET Interface Performance Window

Step 2 Choose the relevant chassis, module, and SONET interface from the list boxes on the left side of the window. The interface performance information for the selected interface appears on tabs on the right side of the window.

SONET Performance Window—Detailed Description

Section
Line
Path
Virtual Tributary (not applicable to Cisco 7200/7400 Series Manager)

Section Tab

Errored Seconds—Number of errored seconds encountered by SONET interface.
Severely Errored Seconds—Number of severely errored seconds encountered by the SONET interface.
Severely Errored Framing Seconds—Number of severely errored framing seconds encountered by the SONET interface.
Coding Violations—Number of coding violations encountered by the SONET interface.

Line Tab

Line

Errored Seconds—Number of errored seconds encountered by the SONET line.
Severely Errored Seconds—Number of severely errored seconds encountered by the SONET line.
Unavailable Seconds—Number of unavailable seconds encountered by the SONET line.
Coding Violations—Number of coding violations encountered by the SONET line.

Far End Line

Errored Seconds—Number of far-end errored seconds encountered by the SONET line.
Severely Errored Seconds—Number of far-end severely errored seconds encountered by the SONET line.
Unavailable Seconds—Number of far-end unavailable seconds encountered by the SONET line.
Coding Violations—Number of far-end coding violations encountered by the SONET line.

Path Tab

Path

Errored Seconds—Number of errored seconds encountered by the SONET path.
Severely Errored Seconds—Number of severely errored seconds encountered by the SONET path.
Unavailable Seconds—Number of unavailable seconds encountered by SONET path.
Coding Violations—Number of coding violations encountered by the SONET path.

Far End Path

Errored Seconds—Number of far-end errored seconds encountered by the SONET path.
Severely Errored Seconds—Number of far-end severely errored seconds encountered by the SONET path.
Unavailable Seconds—Number of far-end unavailable seconds encountered by the SONET path.
Coding Violations—Number of far-end coding violations encountered by the SONET path.

Virtual Tributary Tab

The Virtual Tributary tab displays two panels: Virtual Tributary and far-end Virtual Tributary.

Virtual Tributary Panel

Errored Seconds—Number of errored seconds encountered by the SONET virtual tributary.
Severely Errored Seconds—Number of severely errored seconds encountered by the SONET virtual tributary.
Unavailable Seconds—Number of unavailable seconds encountered by the SONET virtual tributary.
Coding Violations—Number of coding violations encountered by the SONET virtual tributary.

Far End Virtual Tributary Panel

Errored Seconds—Number of far-end errored seconds encountered by SONET virtual tributary.
Severely Errored Seconds—Number of far-end severely errored seconds encountered by SONET virtual tributary.
Unavailable Seconds—Number of far-end unavailable seconds encountered by SONET virtual tributary.
Coding Violations—Number of far-end coding violations encountered by the SONET virtual tributary.

DS-3 Interface Performance

Viewing the DS-3 Interface Performance Window

Step 2 Choose the relevant chassis, module, and DS-3/E3 interface from the list boxes on the left side of the window. The interface performance information for the selected interface appears on the tab on the right side of the window.

DS-3/E3 Performance Window—Detailed Description

The DS-3/E3 Performance tab contains two tabs: DS-3 Performance and E3 performance.

DS3 Performance Tab

The DS3 Performance tab contains two areas: DS3 Statistics and far-end DS-3 Statistics.

DS3 Statistics

The DS3 Statistics frame on the DS3 Performance tab displays the errors encountered by the interface:

C-bit Coding Violations—Number of C-bit coding violations encountered by the interface.
C-bit Errored Seconds—Number of C-bit errored seconds detected by the interface.
C-bit Severely Errored Seconds—Number of times C-bit severely errored seconds detected by the interface.
P-bit Coding Violations—Number of P-bit coding violations detected by the interface.
P-bit Errored seconds—Number of times P-bit errored seconds detected by the interface.
P-bit Severely Errored Seconds—Number of P-bit severely errored seconds encountered by the interface.
Unavailable Seconds—Count of the unavailable seconds encountered by the interface.

Far-End DS-3 Statistics

The Far End DS-3 Statistics frame on the DS3 Performance tab displays the following errors:

C-bit Coding Violations—Number of far-end C-bit coding violations encountered by the interface.
C-bit Errored Seconds—Number of far-end C-bit errored seconds detected by the interface.
C-bit Severely Errored Seconds—Number of times far-end C-bit severely errored seconds detect by the interface.
Unavailable Seconds—Count of the far-end unavailable seconds encountered by the interface.

E3 Performance Tab

The E3 Performance tab contains three areas: Current E3 Status, Interval Status, and Total E3 Status (see Figure 9-10).

Current E3 Status

The E3 Status frame on the DS3 Performance tab displays the errors encountered by the interface:

C-Severely Errored Frame—Number of severely errored frames detected by the interface.
C-Errored Seconds—Number of errored seconds detected by the interface.
C-Line Coding Violations—Number of errored line coding violations encountered by the interface.

Interval E3 Status

The Interval E3 Status frame on the E3 Performance tab displays the following errors.

I-Severely Errored Frames—Number of severely errored frames detected by the interface.
I-Errored Seconds—Number of errored seconds detected by the interface.
I-Line Coding Violations—Number of errored line coding violations encountered by the interface.

Total E3 Status

The Total E3 Status frame on the E3 Performance tab displays the following errors.

T-Severely Errored Frames—Number of severely errored frames detected by the interface.
T-Errored Seconds—Number of errored seconds detected by the interface.
T-Line Coding Violations—Number of errored line coding violations encountered by the interface.

Ethernet Interface Performance

Viewing the Ethernet Interface Performance Window

Step 2 Choose the relevant chassis, module, and interface from the list boxes on the left side of the window. The Ethernet interface performance information for the selected interface appears on the tab on the right side of the window.

Ethernet Performance Window—Detailed Description

The Ethernet Interface Performance tab contains two areas: General Statistics and Collision Statistics.

General Statistics

The General Statistics frame on the Performance-Ethernet tab displays the following statistics:

Alignment Error—Number of frames received with alignment error status.
Frame Check Sequence Errors—Number of frames received with frame check sequence error status.
Multiple Collision Frames—Number of frames transmitted across an interface where more than one collision exists.
Single Collision Frames—Number of frames transmitted across an interface with one collision.
Single Quality Errors—Number of Single Quality Errors (SQE) generated by the interface.
Deferred Transmissions—Number of first transmission attempts delayed because the medium was busy.
Late Collisions—Number of times a collision is detected in the interface.
Excessive Collisions—Number of times transmission failed due to excessive collisions.
Internal MAC Transmit Errors—Number of frames transmitted that failed due to an external transmit error.
Internal MAC Receive Errors—Number of frames transmitted that failed due to internal receive error.
Frames Too Long—Number of frames transmitted where the size of the frames was larger than the permissible frame size.
Carrier Sense Errors—Number of times the carrier sense was lost while transferring frames.

Collision Statistics

The Collision Statistics area displays the number of collisions and how often the collisions are occurring.

Performance Manager

The Performance Manager collects historical performance data for interfaces. You can view performance information in Performance Manager only if you have enabled performance logging. You can do this either globally or individually on interfaces.

The Performance Manager collects data for all technologies on an interface. For example, if you want to view Performance Manager data for an ATM interface, performance attributes are listed for Generic and SONET technologies, because both apply to ATM interfaces.

Viewing the Performance Manager Window

You can open the Performance Manager window for a selected interface within the Map Viewer (Viewer) application. Open the Map Viewer application, then open the Performance Manager window:

The Performance Manager window consists of four panes on the left side of the window, and two tabbed sections on the right side.

First, choose the fields you want from the panes on the left side of the window. The data is displayed on the tabs on the right side of the window.

Step 2 Choose the attribute you want to monitor from the Monitored Attributes pane (for details on this pane, see the "Performance Manager WindowDetailed Description" section.) You can choose multiple contiguous attributes in a list by holding down the Shift key and then selecting the first and last attributes in the list.

You can choose multiple individual attributes by holding down the Ctrl key and clicking individual items. Only the first selected attribute is shown in the line chart or bar chart. The Table Display tab shows all selected attributes.

Step 4 In the Start Date entry boxes, enter the date on which you want to begin viewing performance data. The format must be mm/dd/yyyy.

Step 5 In the Start Time data entry boxes, enter the time at which you want the performance data to start, using 24-hour clock notation. The times are inclusive.

Enter the date on which you want to stop viewing performance data in the End Date entry boxes. The format must be mm/dd/yyyy.
Select the Now check box to view the data from the selected start date to the current time. If you select this option, you do not have to update the end date and time fields.

Enter the end time on which you want to stop viewing performance data in the End Time entry boxes. The format must be 24-hour clock notation.
Select the Now check box to view the data from the selected start date to the current time. If you select this option, you do not have to update the end date and time fields.

Step 8 Choose the summary interval from the drop-down list box. The summary interval is the period of time over which the rule is applied. This interval varies according to the attribute selected. You can choose the Raw option, which displays performance data in its most detailed format (not summarized).

Step 9 Click Refresh Screen to initiate your request for data. Refresh Screen is blue when it is available for selection and grayed out when not available. Refresh Screen is available for selection when Now is selected or when any criterion has changed and you have moved the cursor away from the changed value (for example, by pressing the Tab key or by using the mouse).

Step 10 A line chart of the performance information you requested is displayed at the right side of the window. You can click any of the three tabs to display your data differently.

Performance Manager Window—Detailed Description

The Performance Manager window contains a primary pane on the left side of the window: Monitored Attributes. The Performance Manager window also contains three tabs: Line Chart, Bar Chart, and Table Display.

Monitored Attributes Pane

The monitored attributes list on the left side of the window allows you to select which specific attribute you want to view performance information for. The fields in this list change, depending upon which type of interface you have selected. For example, if your selected interface is an ATM port adapter, you can select all the performance fields on the SONET Performance window and the Generic Performance window. Both of these technologies apply to ATM port adapters; therefore, all performance information for both technologies is listed in the Performance Manager. This list can be rather extensive.

Line Chart Tab

The Line Chart tab displays the retrieved data in graphical format. The X-axis depicts the time at which the polling was done, and the Y-axis depicts the value retrieved or the value when the equipment did not respond properly.

Additional information regarding the element, units, and missed polls is provided, using the color coding displayed at the top of the chart. Blue represents the values retrieved and red identifies any polled values missed.

Bar Chart Tab

The information on this tab is shown as a bar chart with the retrieved data. Blue represents the values retrieved and red identifies any polled values missed.

Table Display Tab

This tab displays the data retrieved in a tabular format. The first column shows the time of polling, and the second column shows the retrieved values. Blue represents the values retrieved and red identifies any polled values missed.

Missed Polls

In some circumstances, an object might fail to be monitored. This might be due to CEMF being shut down or to heavy network loads, and is known as a missed poll. All missed polls are indicated by a yellow point on Performance Manager graphs and charts. The last valid value collected is shown. A missed poll affects the summary data, and you should not rely upon such data.

Performance Manager graphs and charts also indicate when polling on an attribute started and stopped due to history storage criteria being added, edited, or removed. Start and stop polling events are shown in charts and tables. The start polling events point is shown in green, and the stop polling events point is shown in red. A polling events key is displayed for selection.

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