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Performance Management: Traffic Collection

This chapter describes how to schedule network traffic through the Traffic Collection Manager available from the Performance menu, and how to view the collected information through the graphical user interface.

Through traffic data collection, you can collect interface traffic for Layer 3 live link utilization data as well as tunnel traffic. The traffic data is obtained using a data collector that uses one of the three methods to collect the traffic from a router: SNMP MIBs, router CLI output, or bulkstats.

In the former two methods, the router sends traffic data to the data collector in response to SNMP/CLI requests from the data collector, whereas in the later method, the router should be configured to send the bulk statistics via FTP to the data collector at regular intervals.

Use these procedures to monitor your network interface and tunnel traffic.

To have traffic collection updates reflected on the topology map by link utilization colors, you must have performed the “Scheduling Live Network Collection” task for your network in the Task Manager, as described in Chapter 7, Live Network Collection. You should have this live network opened in the IP/MPLSView client.

You should also have set up a profile for the network routers from which you want to collect data as described in Chapter 3, Setting Up Device Profiles.

You should have installed the data collector on one or more machines to which you can connect to from your server. For information on installing the data collector, refer to the IP/MPLSView Getting Started Guide.

To collect traffic from routers using SNMP based data collector, SNMP server process need to be enabled on the routers with SNMP community (SNMPv1/v2c) or user (SNMPv3) configured with at least read-only privilege level.

To collect tunnel traffic for Juniper routers via SNMP (as opposed to CLI), the routers need to be additionally configured for MPLS tunnel traffic statistics using the statistics command.

For instance, the following configures MPLS statistics collection to the file named j13 every minute.

mpls { statistics { file j13 size 1000000; 154 Related Documentation Copyright © 2014, Juniper Networks, Inc. interval 60; } ... }

For an overview of IP/MPLSView or for a detailed description of each IP/MPLSView feature and the use of each IP/MPLSView window, refer to the General Reference Guide and Chapter 19, Reference.

For how to start the Data Collector, refer to the IP/MPLSView Getting Started Guide.

For information on the data repository, refer to Information Extracted via Network Data Collection Task.

Modified: 2015-12-29