Egress process: egress process should be set to
Untag only frames with Port VLAN identifier.
Thus, configuration of the port where the switches are connected should be as
follows.
o Port mode should be chosen as Trunk
port;
o Port VLAN should be 1;
o For trunk ports, Port Type is not allowed
to be changed from C-Port;
o For trunk ports, Ingress Filtering is not
allowed to be changed from enabled;
o For trunk ports, Ingress Acceptance is
not allowed to be changed from Tagged
and Untagged;
o Egress tagging should be chosen as
Untag Port VLAN;
o Allowed VLANs should be 1, 10, 20, 30;
o No forbidden VLANs should be
configured.
Switch configuration where IED Receiving GOOSE and Sampled Values is
connected
o Port where IED Receiving GOOSE and Sampled Values is
connected:
This port will receive untagged and tagged frames and send untagged frames,
only used by management software communication. Thus, IED Receiving GOOSE
and Sampled Values configuration ports should have the following
characteristics:
VLAN Identifier Ingress process: untagged
frames would be forwarded to the Port VID VLAN,
and tagged frames are not expected. Thus,
tagged frames can be if to be forwarded to the
VLAN that is embedded at the frame;
Filtering ingress process: this port should
accept both untagged and tagged frames;
Egress process: egress process should be set to
Untag only frames with Port VLAN identifier.
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