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Invalid status in my Network-static routes validity

xonivre Lv1  Posted 2026-Sep-24 09:22

Hello Sangfor Expert,

I have a problem with my Sangfor NSF-1100A-I regarding the Network → Static Routes configuration.

When I check the Validity status of my default routes, both ISP1-ether1 and ISP2-ether2 are showing “Invalid.”

I am concerned because I experience an internet interruption almost every morning at around 8:00 AM. During the incident, all internet users lose internet connectivity for approximately 3 minutes, and then the connection automatically returns to normal.

During the time of the disconnection, I checked Network → Policy Base Routes, and I noticed that the Link State for both ISP1 and ISP2 was showing “Fault.”

My questions are:

Does the “Invalid” status under Network → Static Routes → Validity indicate a problem with my default routes?
Could the Invalid route status be related to the internet disconnection that occurs every morning?
What could cause both ISP1 and ISP2 to show “Fault” under Policy Base Routes → Link State at the same time?
Is there a specific WAN link detection, reliability detection, PBR, or health-check configuration that I should verify?
Could an issue or instability on ISP2 (ether2) cause the Sangfor device to temporarily mark both WAN links as Fault/Invalid?
What logs or diagnostic information should I collect around 8:00 AM to identify the root cause?

As an additional observation, when I physically disconnect ISP2 (ether2), ISP1 is able to become Valid and the network becomes stable. This makes me suspect that there may be an interaction between the ISP2 link status and the Sangfor WAN/PBR detection.

For reference, my current default-route configuration is:

ISP1 / ether1
Destination: 0.0.0.0/0
Gateway: 203.187.xxx.xxx
Administrative Distance: 1
ISP2 / ether2
Destination: 0.0.0.0/0
Administrative Distance: 2

Even after changing ISP2's Administrative Distance from 1 to 2, its Validity status remains Invalid.

Could you please advise what is causing the routes to show Invalid and whether this is related to the approximately 3-minute internet interruption every morning?

Thank you.

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