Cisco Cisco 4G LTE Wireless WAN Enhanced High-speed WAN Interface Card
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Always-On Backup Access Design Requirements
This configuration example is based on the following logical design requirements:
1.
When the primary circuit is operational, the backup wireless/NEMO session must be connected.
2.
Switch to backup must be triggered by the physical or logical failure on the primary circuit (such as loss of
routing).
3.
Only select traffic from the branch office will be allowed to use the backup wireless link.
4.
When the primary circuit is restored, all traffic must be reverted to the primary path. When the primary path is
operational, traffic will be routed over the primary path symmetrically.
Figure 1.
Design Diagram for Configuration Example