CTC Union FTH4-1000MS, Руководство пользователя

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By default, this device is VLAN unaware, making it completely transparent to VLAN tags. In most application, this device only acts as a media
converter and therefore the device should be transparent. This device does support up to 16 VLAN groups. By using the check boxes for each
port, the ingress access to different VIDs can be controlled here for TP, FX and management.
3.5.6.2 VLAN Per Port Configuration
Within the Gigabit & Fast Ethernet media converter, there are actually three different ports, the external copper and fiber ports, plus the
internal CPU port (management). The VLAN Per Port Setting page deals with how frames exit (egress) the copper, fiber and CPU
(management). These are the
Frame Egress Type . The following operations may be performed to the outgoing frames: <1>: Replace Tag
The switch will remove VLAN tags from packets then add new tags to them. The inserted tag is defined in ”Port VLAN Entry”.
<2>: Remove
Tag The switch will remove VLAN tags from packets, if they are tagged. The switch will not modify packets received without tags <3>: Add
Tag The switch will add VLAN tags to packets, if they are not tagged when these packets are output on this port. The switch will not add tags
to packets already tagged. The inserted tag is defined in ”Port VLAN Entry”.
<4>: Don't Touch Tag Do not insert or remove VLAN tags
to/from packet which is output on this port.