Technical Tip: How to verify Carrier Aggregation status on FortiExtender

[magarwal]

Description	This article describes how to check the Carrier Aggregation (CA) state on FortiExtender and verify what bands are being aggregated.
Scope	FortiExtender-211E v7.2.2.
Solution	Carrier aggregation is a technique in which multiple LTE bands are combined to increase the bandwidth and enhance user experience. CA needs to be enabled on the SIM Carrier end. If the Carrier SIM supports CA, the aggregation will automatically happen when the data usage goes high on the FortiExtender. CA state can be verified using the following commands on the FortiExtender CLI: 1) 'get modem status' output in FortiExtender in 'ca state' field. 2) To check the current data usage on FortiExtender:  # get modem data-usage 3) AT commands on the FortiExtender CLI: # execute modemfw AtTest modem1 at!gstatus? 2.1) Default (Normal) download rate: Sample AT!GSTATUS? output (CA is Inactive): !GSTATUS: Current Time: 205154 Temperature: 41 Reset Counter: 1 Mode: ONLINE System mode: LTE PS state: Attached LTE band: B3LTE bw: 20 MHz LTE Rx chan: 1850 LTE Tx chan: 19850 LTE SCC1 state:NOT ASSIGNED LTE SCC2 state:NOT ASSIGNED LTE SCC3 state:NOT ASSIGNED LTE SCC4 state:NOT ASSIGNED EMM state: Registered Normal Service RRC state: RRC Idle IMS reg state: No Srv 2.2) While downloading a large file over LTE: Sample AT!GSTATUS? output (CA is Active): !GSTATUS: Current Time: 906 Temperature: 36 Reset Counter: 3 Mode: ONLINE System mode: LTE PS state: Attached LTE band: B2 LTE bw: 10 MHz LTE Rx chan: 1000 LTE Tx chan: 19000 LTE SCC1 state:ACTIVE LTE SCC1 band: B5 LTE SCC1 bw : 10 MHz LTE SCC1 chan: 2450 LTE SCC2 state:ACTIVE LTE SCC2 band: B30 LTE SCC2 bw : 10 MHz LTE SCC2 chan: 9820 LTE SCC3 state:NOT ASSIGNED LTE SCC4 state:NOT ASSIGNED EMM state: Registered Normal Service RRC state: RRC Connected IMS reg state: No Srv Related article: For FortiExtender antenna best practices, refer to: https://community.fortinet.com/t5/FortiExtender/Technical-Tip-FortiExtender-showing-latitude-and-lon...