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Defining a Congestion Point Profile

You can create a congestion point profile that automatically performs congestion point classification. This profile supports only edge mode and dual mode for SRC-ACP.

To define a congestion point profile:

  1. Click Configure>Shared>Congestion Points.

The Congestion Point Profile pane appears.

  1. In the Create new list, select Profile. Type a name for the new profile in the dialog box, and click OK.

The Profile screen appears.

  1. Enter information as described in the Help text in the main pane, and click Apply.

Congestion Point Expressions

You can enter a congestion point expression by using the syntax listed in this section. You can also embed Python scripting expressions within the congestion point expression.

If you embed Python expressions within a congestion point expression, use the escape sequence <- then -> to enclose the Python expression. See Methods for Use with Scripting Expressions and Match Criteria for Congestion Point Classification.

The syntax for a congestion point expression is:

<NetworkDevice>/<NetworkInterface>[/<CongestionPoint>]

For information about network devices, see SRC-PE Network Guide, Part 2, Using Juniper Networks Routers in the SRC Network.

For information about interfaces, see SRC-PE Subscribers and Subscriptions Guide, Chapter 6, Classifying Interfaces and Subscribers with the SRC CLI.

If one of the elements with the path contains a slash (/), use a backslash (\) as an escape character for the slash. For example, \/.

Expressions in Templates for Congestion Point Profiles

You can create a congestion point profile to be used as a template for other profiles. Templates simplify management of congestion points. Rather than configuring each congestion point individually, you can create templates to define common parameters for a class of individual congestion points.

For example, in an environment in which VLAN interfaces GigabitEthernet1/0.1 through GigabitEthernet1/0.1000 have the same available bandwidth, you can specify the characteristics of the VLAN interface once and have SRC-ACP create the congestion points based on the template configuration.

When a congestion point expression has the third element (<CongestionPoint>), SRC-ACP uses the <NetworkDevice>/<NetworkInterface> part of the expression to load the congestion point from the directory, and uses it as a template to create a congestion point in memory for subscriber. The <CongestionPoint> part of the expression distinguishes each congestion point (available bandwidth) created from this template.

Methods for Use with Scripting Expressions

SRC-ACP provides the following methods to use in scripting expressions:

Example—slot("atm 4/5:0.32") == "4"

Example—port("atm 4/5:0.32") == "5"

Example—l2id("atm 4/5:0.32") == "0.32"

Example—escape("atm 4/5") == "atm 4\/5"

Match Criteria for Congestion Point Classification

You can use the match criteria in Python scripting expressions for a congestion point expression. For more information about the match criteria, see SRC-PE Network Guide, Chapter 22, Configuring Congestion Point Classification with the SRC CLI and Selecting Congestion Point Classification Criteria.


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