Cambium Networks PTP 820 Series User Manual page 386

Chapter 6: Ethernet Services and Interfaces
Parameter
C-Vlan preservation
S-Vlan CoS preservation
S-Vlan preservation
Marking admin
Definition
Determines whether the original C-VLAN ID is preserved or restored for
frames egressing from the service point.
If C-VLAN preservation is enabled, the C-VLAN ID of frames egressing the
service point is the same as the C-VLAN ID when the frame entered the
service.
If C-VLAN preservation is disabled, the C-VLAN ID of frames egressing the
service point is set at whatever value might have been re-assigned by the
interface, service point, or service, or whatever value results from
marking
Determines whether the original S-VLAN CoS value is preserved or
restored for frames egressing from the service point.
If S-VLAN CoS preservation is enabled, the S-VLAN CoS value of frames
egressing the service point is the same as the value when the frame
entered the service.
If S-VLAN CoS preservation is disabled, the C-VLAN CoS value of frames
egressing the service point is set at whatever value might have been
re-assigned by the interface, service point, or service, or whatever value
results from marking
Read-only. Indicates whether the original S-VLAN ID is preserved or
restored for frames egressing from the service point.
If S-VLAN preservation is enabled, the S-VLAN ID of frames egressing the
service point is the same as the S-VLAN ID when the frame entered the
service.
If S-VLAN preservation is disabled, the S-VLAN ID of frames egressing the
service point is set at whatever value might have been re-assigned by the
interface, service point, or service, or whatever value results from
marking
Determines whether re-marking of the outer VLAN (C-VLAN or S-VLAN) of
tagged frames that pass through the service point is enabled.
If Marking admin is set to Enable, and CoS preservation for the relevant
outer VLAN is set to Disable, the SAP re-marks the C-VLAN or S-VLAN
802.1p UP bits of egress frames according to the calculated CoS and
Color, and the user-configurable 802.1Q and 802.1AD marking tables. You
can configure these tables by selecting Ethernet > QoS > Marking from
the menu on the left side of the Web EMS.
If Marking admin and CoS preservation for the relevant outer VLAN are
both set to Enable, re-marking is not performed.
If Marking admin and CoS preservation for the relevant outer VLAN are
both set to Disable, re-marking is applied, but only according to the
values defined for Green frames in the 802.1Q and 802.1AD marking
tables.
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Configuring Ethernet Service(s)