-26-
Enable
Disable
All packets are with no modification.
Disable
Disable
All packets are untagged in egress.
Disable
Enable
All packets are tagged in egress.
Enable Enable Settings
not
recommended
(possible
double-tagging)
[Ingress Keep Tag] options:
Enable
-
The VLAN tag in the received VLAN-tagged packet will be kept as it is and is not
stripped in whole conversion operation.
Disable
-
The VLAN tag data in the received VLAN-tagged packet is stripped (removed).
[Egress Insert Tag] options:
Enable
-
Insert a tag into the packet in egress. The tag inserted is based on the rule below:
Incoming Packet Type Tag inserted
Untagged Ingress
port
Default
Tag
Priority-tagged
Ingress
port
Default
Tag
VLAN-tagged
Received
packet
own
tag
Disable
-
No tagging is performed.
[Default Tag -VID], [Default Tag - CFI], [Default Tag - Priority] settings
These settings compose one ingress port Default Tag. This tag is used when a tag insertion is required for
untagged packets.
802.1Q Filtering
802.1Q VID Filtering function allows to admit or reject certain VID tagged packets. Up to 16 allowed
(positive list) or rejected (negative list) VIDs can be configured. This function allows to limit certain packets to
pass from one link segment to another one.
[VID Table] options
Disable
-
802.1Q VID filtering is disabled.
Allowed VID
-
Only the VLAN-tagged packets with VIDs in VID table are admitted.
Rejected VID
-
The VLAN-tagged packets with VIDs in VID table are rejected and dropped.
For untagged and priority-tagged packets, the ingress [Default Tag - VID], also called PVID is used for VID
filtering. If it is in Allowed VID table, the untagged packet is allowed to pass; otherwise, dropped. If it is in
Rejected VID table, the untagged packet is dropped.
3.6 SNMP Support