
Figure 7-2
Encapsulation format of Stack VLAN
DA SA
VLAN TAG
0x8100
VLAN
L3Data
7.28 C-VLAN and S-VLAN
Description
The
C-VLAN and S-VLAN
parameter specifies the two types of VLAN tags defined in the
QinQ service and IEEE 802.1ad. C-VLAN is taken as the client VLAN tag. S-VLAN is taken
as the service VLAN tag. C-VLAN Tag (C-TAG) indicates the VLAN tag on the client side,
and S-VLAN Tag (S-TAG) indicates the VLAN tag at the service layer of the carrier.
DMAC
SMAC
S-VLAN
C-VLAN
Data
FCS
6 bytes
6 bytes
4 bytes
4 bytes
-
4 bytes
Impact on the System
The system operation is not affected.
Values
Valid Values
Default Value
Empty, 1-4095
Empty
The following table lists the description of each value.
Value
Description
Empty
Indicates that the port does not check the C-VLAN/S-VLAN.
The services are forwarded according to the port.
1-4095
Indicates that the port checks the C-VLAN/S-VLAN. The
services are forwarded according to the port and C-VLAN/S-
VLAN.
7 List of Parameters
OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
7-30
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2011-06-30)