Industrial Managed
Ethernet Switch – EH9711
User Manual
Page
112
of
223
Label
Description
Factory
Default
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. See Port Type for a description of when a
frame is considered tagged.
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.
Tagged and
Untagged
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.
Untag All
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.
1
Forbidden
VLANs
A port may be configured to never become 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.
Null
Click
Save
button to save changes. Click
Reset
button to undo any changes made locally and revert to previously saved
values.
2.12.2
SVL
SVL
or Shared VLAN Learning Configuration can be set on the managed switch through this webpage as shown in Figure
2.89. In
SVL
, one or more VLANs map to a Filter ID (
FID
). By default, there is a one-to-one mapping from
VLAN
to
FID
,
in which case the switch acts as an IVL (Independent VLAN Learning) bridge, but with SVL multiple VLANs may share the
same MAC address table entries. Click
Add FID
button to add a new row to the SVL table. The FID will be pre-filled with
the first unused FID. Table 2.78 summarizes the descriptions of Shared VLAN Learning Configuration.
