Configuring Performance Rate of Line Modules on ERX7xx Models and the ERX1410
Router
NOTE: The information in this section does not apply to the ERX1440, ERX310,
E120, or E320 router . It also does not apply to the OC48 line module, which is
supported only by the ERX1440 router.
Line modules in an ERX1440 or an ERX310 router always operate at line rate
performance. However, you can configure ERX7xx models and the Juniper Networks
ERX1410 Broadband Services Router to enable the line modules either to operate at
full line rate performance or to allow line modules to operate at a rate dependent on
the resources available.
Operating at full line rate performance restricts the combination of line modules in
the router. Operating at a rate dependent on the resources available allows a much
more extensive combination of line modules in the router and is known as bandwidth
oversubscription.
To configure performance:
1. Choose a combination of line modules appropriate for the performance. See
“Choosing a Combination of Line Modules” on page 373.
2. Disable slots that contain unwanted line modules, or modify the combination of
line modules in the router. See “Disabling and Reenabling Line Modules, SRP
Modules, and SFMs” on page 360, and ERX Hardware Guide, Chapter 4, Installing
Modules.
3. Specify the type of performance. See “Specifying the Type of Performance” on
page 376.
Choosing a Combination of Line Modules
For line rate performance, the total bandwidth required by the line modules in the
slot group must not exceed the bandwidth available from the SRP module. In this
case, the combination of line modules that can reside in a slot group depends on the
following:
■ The number of slots per group
■ The bandwidth available from the SRP module
■ The bandwidth required by each line module
■ In the case of the SRP-5G+ and SRP-10G modules, the switches (upper and
lower) that the line module can use.
Slot Groups
The number of slots in a group depends on the E Series model. For information about
slot groups, see ERX Hardware Guide, Chapter 4, Installing Modules.
Configuring Performance Rate of Line Modules on ERX7xx Models and the ERX1410 Router ■ 373
Chapter 6: Managing Modules
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