Comnet CNGE11FX3TX8MS, Инструкция по установке и эксплуатации

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INS_CNGE11FX3TX8MS[POE][HO] Rev. 11.6.17 PAGE 138
INSTRUCTION MANUAL CNGE11FX3TX8MS[POE][HO]
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Object Description
Ingress Filtering Hybrid ports allow for changing ingress filtering. Access and Trunk ports always have ingress
filtering enabled.
If ingress filtering is enabled (checkbox is checked), frames classified to a VLAN that the port is not
a member of get discarded.
If ingress filtering is disabled, frames classified to a VLAN that the port is not a member of are
accepted and forwarded to the switch engine. However, the port will never transmit frames
classified to VLANs that it is not a member of.
Ingress
Acceptance Hybrid ports allow for changing the type of frames that are accepted on ingress.
Tagged and Untagged- Both tagged and untagged frames are accepted.
Tagged Only - Only tagged frames are accepted on ingress. Untagged frames are discarded.
Untagged Only - Only untagged frames are accepted on ingress. Tagged frames are discarded.
Egress Tagging Ports in Trunk and Hybrid mode may control the tagging of frames on egress.
Untag Port VLAN
Frames classified to the Port VLAN are transmitted untagged. Other frames are transmitted with
the relevant tag.
Tag All
All frames, whether classified to the Port VLAN or not, are transmitted with a tag.
Untag All
All frames, whether classified to the Port VLAN or not, are transmitted without a tag. This option is
only available for ports in Hybrid mode.
Allowed VLANs Ports in Trunk and Hybrid mode may control which VLANs they are allowed to become members
of. Access ports can only be member of one VLAN, the Access VLAN.
The field’s syntax is identical to the syntax used in the Enabled VLANs field. By default, a Trunk or
Hybrid port will become member of all VLANs, and is therefore set to 1-4095.
The field may be left empty, which means that the port will not become member of any VLANs.
Forbidden
VLANs A port may be configured to never be member of one or more VLANs. This is particularly useful
when dynamic VLAN protocols like MVRP and GVRP must be prevented from dynamically adding
ports to VLANs.
The trick is to mark such VLANs as forbidden on the port in question. The syntax is identical to the
syntax used in the Enabled VLANs field. By default, the field is left blank, which means that the
port may become a member of all possible VLANs.
Apply Click to apply changes.
Reset Click to revert to previous values.