Layer 2 Attributes

In this interface, you can query and set the Layer 2 parameters of the SDH interface.

In the NE Explorer, click the NE and choose Configuration > Interface Management > SDH Interface from the Function Tree. Then, click the Layer 2 Attributes tab.
In the NE Explorer, click the board and select Configuration > Interface Management > SDH Interface from the Function Tree. Then, click the Layer 2 Attributes tab.

**Table 1** Descriptions of the parameters for SDH interface Layer 2 Attributes
Field	Value	Description
Port	For example: 4-MP1-1-AD1-1(Port-1)	Display the port name.
Port Type	UNI, NNI	Select the port type. UNI indicates the user-network interface, which connects to the client-side equipment. NNI indicates the network-network interface, which connects to the ATM equipment in the core network.
ATM Cell Payload Scrambling	Disabled, Enabled	When the ATM cell payload scrambling is enabled, several "0"s and "1"s in the data are suppressed.
Min. VPI	0 to 1	Set the Min. VPI.
Max. VPI	UNI: 0 to 255 NNI: 0 to 4095	Set the Max. VPI.
Min. VCI	0 to 32	Set the Min. VCI.
Max. VCI	0 to 65535	Set the Max. VCI.
VCC-Supported VPI Count	0 to 4096	Set the count of VPIs that support the VC switching.