Monitoring the Service Traffic Statistics of E-Line Services for Correlating Device Counters

You can view the Service Traffic page of a specific service to examine and diagnose the transmission details of packets and the metrics on forwarded or received packets. The interface statistical counters display the number of packets and bytes sent and received from interfaces that are associated with the devices of the service. A pictorial representation of the links in an E-Line service topology is also shown. You can also view a bar chart of the class-of-service (CoS) queue information for physical interfaces. For rate-limited interfaces hosted on Modular Interface Cards (MICs), Modular Port Concentrators (MPCs), or Enhanced Queuing DPCs, rate-limit packet-drop operations occur before packets are queued for transmission scheduling. For such interfaces, the statistics for queued traffic do not include the packets that have already been dropped due to rate limiting, and consequently the displayed statistics for queued traffic are the same as the displayed statistics for transmitted traffic.

For rate-limited interfaces hosted on other types of hardware, rate-limit packet-drop operations occur after packets are queued for transmission scheduling. For these other interface types, the statistics for queued traffic include the packets that are later dropped due to rate limiting, and consequently the displayed statistics for queued traffic equals the sum of the statistics for transmitted and rate-limited traffic.

1. Select Service View from the View Selector.
   
   The workspaces that are applicable to routing and tunneling services are displayed on the View pane.
2. From the Junos Space user interface, click the Monitor icon on the Connectivity Services Director banner.
   
   The functionalities that you can configure in this mode are displayed on the task pane.
3. From the Service View pane, on the left, click the plus sign (+) next to Network Services to expand the tree and display the different service types that you can configure.

   The Network Services tree is expanded and displayed on the View pane.

4. Click the plus sign (+) beside Connectivity to view services based on protocols.

   The Connectivity tree is expanded and displayed on the View pane.

5. Expand the E-Line Services tree to select an E-Line service.
6. Click the ServiceTraffic tab.

   The Service Traffic page is displayed.

The following widgets are displayed on the Service Traffic tab.

• Traffic Graph

• Pseudowire Traffic

• Interface Traffic Statistics/Endpoint Users

Traffic Graph

The Traffic Graph monitor displays the number of packets transmitted between the peer devices. A table is shown with the row representing the source device and the columns denoting the devices or network elements in the path up to the destination device. It is applicable for E-Line services. From the Statistics Type drop-down list, select Packets or Bytes to display metrics corresponding to the selected parameter.

The Traffic Graph monitor for E-Line services is displayed in a pictorial form, with the primary origin or A endpoint, backup origin or A endpoint, primary destination or Z endpoint, and backup destination or Z endpoints shown as circles. Color-coded legends reference the lines that are shown in the graph. The lines correspond to the traffic traversing from the A primary endpoint to the Z primary endpoints, from the A primary endpoint to the Z backup endpoint, and from the Z primary and Z backup endpoints to the A primary endpoint. The arrows indicate the direction of traffic flows. Red lines denote the Layer 2 Ethernet pseudowire traffic between the endpoints to have been dropped or the connection to be down. Green lines denote the pseudowire traffic to be transmitted succesfully or the connection to be up. A gray line denotes that connection state is not available, and NA indicates that the statistic is not available. Solid lines denote the connections between primary pseudowires, while dotted lines denote the connections between secondary pseudowires. The numbers that are shown on the connection lines signify the metrics or count corresponding to the type of parameter you selected, such as output packets or output bytes.

On the Service Traffic page, the Traffic Graph monitor is also supported for an E-Line service with one endpoint as unmanaged device.

For an E-Line service with resiliency, for the redundant pseudowires configured to remote PE routers from the A primary or source endpoint, the traffic statistics for the primary pseudowire over which customer traffic is being transmitted and the backup pseudowire are displayed along the connection lines.

Pseudowire Traffic

This monitor is displayed for E-Line services. A line chart is displayed with time on the horizontal axis and the number of output packets or output bytes on the vertical axis. From the Statistics Type drop-down box at the top of the monitor, select Input Packets or Input Bytes to display the number of packets or bytes traversing in the ingress direction (received traffic). Alternatively, select Output Packets/Second or Output Bytes/Second to display metrics corresponding to the transmitted or egress packets or bytes. From the Select Primary Endpoint list, select the primary endpoint or device for which you want to view the traffic details traversing through the pseudowire in the output direction.

From the Time Interval drop-down box, select 1 Hour, 8 Hours, 1 Day, 1 Week, 1 Month, 3 Months, 6 Months, 1 Year, or Custom to specify the duration for which the data polled from devices needs to be displayed. If you select the Custom option, the Time range popup dialog box is displayed. Specify the date from the calendar, and select the Time From (Start time in the 24-hour time format of collection of data), and Time To (End time in the 24-hour time format of collection of data). Click OK to save the settings. Else, click Cancel to discard the configuration.

Interface Traffic Statistics/Endpoint Users

This monitor is displayed for E-Line services. In this monitor, the interface statistics denote the traffic data on all the UNI or site interfaces associated with the service. These values are on-demand statistical values and the data is retrieved from the device directly without being cached (polling at periodic intervals and displaying a snapshot). It is supported for E-Line, E-LAN, and IP services. The following fields are displayed in a table:

• Device Name—Name of the device

• Interface—Name of the interface

• Packets In—Number of packets received on the interface

• Packets Out—Number of packets sent from the interface

• Bytes In—Number of bytes received on the interface

• Bytes Out—Number of bytes sent from the interface

From the Automatic Refresh list, select Disabled, Every 30 Seconds, Every 45 Seconds, or Every 1 Minute to specify the frequency at which the statistics in the table must be updated and displayed. When you disable the auto-refresh capability, the page is not refreshed periodically by itself; instead you can click the Refresh icon to update the table contents for viewing.

For an E-Line service with one endpoint as unmanaged device, the Interface statistics monitor displays only the managed devices in the list and the corresponding monitored data. Unmanaged devices or its data are not displayed.