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Parameter description:

Ethertype for Custom S-ports :
This field specifies the ether type used for Custom S-ports while “s-custom-port” enabled.
This is a global setting for all the Custom S-ports. Custom Ethertype enables the user to
change the Ethertype value on a port to any value in order to support network devices
which do not use the standard 0x8100 Ethertype field value on 802.1Q-tagged or 802.1ptagged frames.

Port :
Indicates the port number of each port.

Port Type :
Port can be one of the following types: Unaware, C-port, S-port, and S-custom-port.
Unaware
The function
of Unaware
can be used
for 802.1QinQ
(double tag).
C-port
Ingress action
When the port receives untagged frames, an
untagged frame obtains a tag (based on PVID)
and is forwarded.
When the port receives tagged frames:
1. If the tagged frame is TPID=0x8100, it becomes
a double-tag frame, and is forwarded.
2. If the TPID of tagged frame is not 0x8100 (ex.
0x88A8), it will be discarded.
When the port receives untagged frames, an
untagged frame obtains a tag (based on PVID)
and is forwarded.
124
Egress action
The TPID of frame
transmitted by Unaware
port will be set to
0x8100.
The TPID of frame
transmitted by C-port
will be set to 0x8100.
SG72660M & SG72660MP
Revision A3