By default, Smart Access Gateway (SAG) devices use a WAN connection as the active link and a 4G connection as the standby link for redundant Internet access. If the active link fails, traffic automatically fails over to the standby link.
Prerequisites
A 4G SIM card with a data plan from an ISP is inserted into the Smart Access Gateway device.Background information
Each SAG device ships with a 4G SIM card that only receives configuration information from the cloud and cannot transmit data traffic. To use 4G as a standby link, purchase a separate 4G SIM card with a data plan from an ISP and insert it into the device. This card carries your data traffic if the active WAN link fails.Procedure
- Log on to the Smart Access Gateway console.
- In the left-side navigation pane, click Smart Access Gateway.
- Find the target SAG instance and click the instance ID.
- In the left-side navigation pane of the displayed page, click HA Configuration.
- In the HA Configuration section, view the status of the WAN and 4G links.