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SAE Tracking for LSPs Configured on Devices Running Junos OS


SAE Tracking for LSPs Configured on Devices Running Junos OS Overview

You can configure the SAE to track the status of LSPs that are configured on managed devices running Junos OS. Use LSP tracking with applications such as the sample IPTV application. This application uses LSP tracking to collect status information for LSPs that carry IPTV traffic from video servers to a network edge router in which user connections terminate.

LSP tracking can configure the system log on managed devices running Junos OS to send notification messages to the managing SAE when LSPs are created and removed, and when bandwidth allocation for an LSP changes. You can enable LSP tracking for all managed devices running Junos OS or a set of devices running Junos OS.

The SAE creates a pseudointerface when each LSP becomes active (that is, when the RPD_MPLS_LSP_UP syslog event is logged) to:

  • Track session status by sending interface-tracking plug-in events for each pseudointerface.

  • Create subscriber sessions for the pseudo-interfaces.

The SAE does not support policy installation, including default policies, through an LSP pseudointerface.

Configuring Event Tracking for Junos LSPs (SRC CLI)

Configure event tracking for Junos LSPs to provide information to an application, such as the sample IPTV application, that needs information about LSP status.

To configure LSP tracking:

  1. From configuration mode, access the configuration statement that specifies the configuration for tracking LSPs.

  2. (Optional) Specify a regular expression to identify a set of LSP names. If you do not define an expression, the SAE tracks all LSPs.

  3. (Optional) Specify the name of the file to store system log event messages (that provide information about LSP state changes in a device running Junos OS).

    For example, to store messages in the junos-1 file: