User Manual Managed Switches
97
Ingress Acceptance
Hybrid ports allow for changing the type of frames that are accepted on ingress.
Setting
Description
Factory
Default
Tagged and
Untagged
Both tagged and untagged frames are accepted. See Port
Type for a description of when a frame is considered
tagged.
Tagged and
Untagged
Tagged Only
Only frames tagged with the corresponding Port Type tag
are accepted on ingress.
Untagged Only
Only untagged frames are accepted on ingress. See Port
Type for a description of when a frame is considered
untagged.
Egress Tagging
Ports in Trunk and Hybrid mode may control the tagging of frames on egress.
Setting
Description
Factory
Default
Untag Port VLAN
Frames classified to the Port VLAN are transmitted
untagged. Other frames are transmitted with the relevant
tag.
Untag All
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. Only available for Hybrid ports.
Allowed VLANs
Setting
Description
Factory
Default
VID ranges from 1
to 4095
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.
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 VLAN.
1
Forbidden VLANs
Setting
Description
Factory
Default
VID ranges from 1
to 4095
A port may be configured to never become member of
one or more VLANs. This is particularly useful when
dynamic VLAN protocols like GVRP must be prevented
from dynamically adding ports to VLANs.
The trick is to mark such VLANs as forbidden on the port
in question. By default, the field is left blank, which means
that the port may become a member of all possible
None
