Juniper NFX150, Руководство по оборудованию

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Dial-on-demand—The Mini-PIM initiates a connection when it receives interesting
traffic. You define interesting traffic using the dialer filter. To configure
dial-on-demand using a dialer filter, you first configure the dialer filter and then apply
the filter to the dialer interface.
NOTE: The dial-on-demand mode is supported only if the LTE module
is configured as a primary interface.
•
Backup—The module connects to the 3G/4G network when the primary connection
fails.
•
Primary and backup interface—You can configure the LTE module either as a primary
interface or as a backup interface.
When configured as the primary interface, the LTE module supports both the Always-on
and Dial-on-demand modes.
When configured as the backup interface, the LTE module connects to the network
only when the primary interface fails.
• Over-the-air upgrade for modem firmware—Over-the-air (OTA) firmware upgrade
enables automatic and timely upgrade of modem firmware when new firmware versions
are available. The OTA upgrade can be enabled or disabled on the LTE module.
NOTE: OTA upgrade is disabled by default.
Understanding the LTE Physical Interface
The physical interface for the LTE module uses the name cl-1/1/0. You configure the
following properties on the physical interface:
•
A dialer pool to which the physical interface belongs and the priority of the interface
in the pool.
• Profiles for the SIM cards.
•
Radio access technology (automatic, 3G, LTE)
Understanding the LTE Logical Interface
The dialer interface, dl0, is a logical interface, which is used to trigger calls. When traffic
is sent to the dl0 interface, it enables the physical interface in the dialer pool and places
calls through the physical interface. The dialer interface can perform backup and dialer
filter functions. You can configure the dialer interface to operate in any one of the following
ways:
•
Primary interface—The dialer interface connects to the network and is always on.
• Backup interface for the primary WAN connection—The dialer interface is activated
only when the primary connection fails.
29 Copyright © 2018, Juniper Networks, Inc.
Chapter 1: Overview