TP-Link Cellular Failover: Single vs. Dual Failover Detection Speed Comparison Test
Channel: Daniel Rosehill
Date: 2021-09-01

To continue my adventures in failover internet, I decided to set up dual detection failover on my TP-Link TL-MR100 router which I'm using to provision a backup 4G/LTE line to provide failover for my ISP connection. I rigged up extension ethernet cables from the router onto my desk so that I could test the failover time more reliably than in my previous video.

For the first failover test, I used single method failover which simply sends DNS requests to a DNS root server to assess whether connectivity is live. That yielded a failover time to cellular of about 30 seconds.

Next, I moved over to dual detection failover. I used a Google server for the IP ping:

IPv4: 8.8.8.8
IPv6: 2001:4860:4860::8888

When I retested the failover using the dual detection failover, I was able to reduce the failover time by approximately ten seconds. 

Conclusion: TP-Link's dual detection failover to backup does result in reduced failover times. 

By: Daniel Rosehill (danielrosehill.co.il)

== Affiliate links to product(s) mentioned ===

TP-Link TL-MR100 300Mb Wireless N 4G LTE WiFi Router with SIM Slot

https://amzn.to/3BHlMib

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