we have a Cisco 2921 with two Internet connections:
The primary connection is a DSL link on an EHWIC-VA-DSL-A, the backup a UMTS/LTE connection on a EHWIC-4G-LTE-G.
In case the DSL link fails, an automated failover to the second (UMTS/LTE) connection should happen.
Can anyone please provide a best practice configuration example? I´m not sure if the basic IP SLA mechanisms (tracking) are sufficient, or if i have to combine this with the "backup interface" command.
My main question is if I should configure the backup using the "backup interface" - method which brings up the cell connection automatically if the line protocol of the ADSL connection is down, or if it is better to use IP SLA / tracking only?
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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