USG60 High CPU

Dayna · April 2021

I recently upgraded my Spectrum Internet from 100 mbps to 600. If I set the USG60 Wan1 interface to 1G, the firewall CPU will go to 100% after a short period of time and become unresponsive. If I set the Wan1 to 100 mbps, it runs without issue. I'm not able to control the speed on the Spectrum device--its fixed to auto. Any one have a resolution?

Zyxel_Can · April 2021

Hi @Dayna,

Can you share some information with us;

1- What’s the firmware version of USG60?

2- Can you type following command to console when this issue occurs and share with me by private message :

Router# debug system top iterations 5

Router# debug system ps

Router# show cpu average

You can also find following forum entry as reference and share information with us:

https://community.zyxel.com/en/discussion/510/how-can-i-be-sure-that-the-cpu-high-usage-is-due-to-heavy-traffic-loading

Dayna · April 2021

The firmware version is 4.62 . Over the weekend, support shipped me an RMA replacement unit which I put in place and has been running for 3 days without the same issue occurring.

USG60 High CPU

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