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Forum Discussion
wiredfence
Aug 16, 2026Follower
GS316EP: Port mirroring fails to capture traffic between two ports isolated in their own VLAN
Setup: I have two VLANs configured: VLAN 1 (default): most ports, including my normal LAN traffic VLAN 10: exactly two ports (Port 3 and Port 4), used for an isolated point-to-point link betwe...
StephenB
Aug 16, 2026Guru - Experienced User
Not sure of the limitations, but I don't think port 16 should be connected to either VLAN.
Since this is a pass-through connection you might try just mirroring port 3 (not both port 3 and port 4). Every packet traversing port 3 is also traversing port 4.
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