Zywall 110 strange traffice statistics

Leszek Posts: 13
First Anniversary First Comment
edited September 2021 in Security
From few months I observe strange traffics statistics.
My config
P1 - WAN (backup connection)
P2 - WAN (main connection)
P3 - OFF
P4 - LAN
P5 - OFF
P6 - OFF
P7 - OFF

What is strange? On P2 I see 17Mbps. In the same moment on LAN 0Mbps.
What generate traffic on WAN P2 port?

I changed the device: the problem persists. Now I use firmware V4.65(AAAA.0) but problem was on the older firmware too. I have this problem only with one of ten offices.

Pictures below.

other ports (OFF)

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