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CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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LTE Links as Backup WAN Links

LTE Links as Backup WAN Links

An LTE link can function as the backup link of an Ethernet link, xDSL link, or another LTE link.

As shown in Figure 12-5, an enterprise branch uses a DSL link as the primary link for WAN access. If the primary link fails, traffic is immediately switched to the LTE link, enhancing reliability of Internet access from the enterprise branch.

Figure 12-5  LTE link backing up a DSL link

In Figure 12-6, an enterprise branch has two LTE links to connect to the headquarters. LTE link 1 is the primary link and connects to LTE network 1 of Carrier A. LTE link 2 is the backup link and connects to LTE network 2 of Carrier B. If the primary link fails, traffic is immediately switched to the backup LTE link, enhancing reliability of Internet access from the enterprise branch.

Figure 12-6  LTE link backing up another LTE link

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Updated: 2019-03-06

Document ID: EDOC1100069331

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