Application Volume Tracking Overview
The application volume tracking (AVT) feature uses application identification and the Profiler to collect application statistics aggregated at 15-minute and 1-hour intervals. The AVT database stores up to four sets of each interval at a time (four 15-minute intervals and four 1-hour intervals). After it has accumulated four intervals, it begins dropping the oldest interval as it collects a new one.
The AVT process writes data files to the following directories:
- /usr/idp/device/var/stat/1hour
- /usr/idp/device/var/stat/15min
The data is collected and parsed for reporting in NSM, IDP Reporter, or Juniper Networks Application Usage Manager.
Table 1 describes the columns of data in AVT records for each session.
Table 1: Application Volume Tracking Data
Data Field | Description |
|---|---|
Session ID | Unique ID for the session. |
Source IP address | IP address for the host that initiated the session. |
Source port | The port number for the source host. |
Destination IP address | IP address for the destination server. |
Destination port | The port number of the destination host. |
VLAN ID | VLAN ID (if any). |
Protocol | The IP protocol: TCP, UDP, or ICMP. |
Application ID | The application identified by the application identification feature. |
Bytes | Throughput in bytes for sessions during the interval. AVT tracks both server-to-client and client-to-server bytes. |
Packets | Number of packets for sessions during the interval. AVT tracks both server-to-client and client-to-server packets. |
Table 2 lists documentation references for AVT log viewing tools.
Table 2: Application Volume Tracking Log Viewing Tools
AVT Log Viewing Tools | Documentation |
|---|---|
NSM Profiler Viewer > Application Profiler tab (logs) NSM Report (reports) | IDP Administration Guide |
IDP Reporter | IDP Reporter User’s Guide |
Juniper Networks Application Usage Manager | Juniper Networks Application Usage Manager Installation and User’s Guide |
 | Note: To avoid issues with reports, we highly recommend that you synchronize the network clocks for all devices to the same NTP server. For example, the network clocks for all IDP appliances and NSM clients should be synchronized to the NTP server specified in the NSM configuration. |
