Licensing Requirements and Limitations for MPLS LDP

Other network elements are not required.

MPLS LDP is a basic feature of a switch and is not under license control.

Only the following switch models support MPLS LDP:

S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

In V200R003 and earlier versions, only VLANIF interfaces support MPLS LDP. In V200R005 and later versions, only VLANIF interfaces and Layer 3 Ethernet interfaces support MPLS LDP.
On the S5720-EI switch, if hardware support for MPLS is displayed as NO in the output of the display device capability command, the switch does not support MPLS. In this case, you need to pay attention to the following points:
- MPLS cannot be enabled on the S5720-EI switch. If the switch has been added to a stack, MPLS cannot be enabled on the stack.
- The S5720-EI switch cannot be added to a stack running MPLS.
In V200R013C00 and later versions, when the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-HI, S6730S-H, or S6730-H functions as a P device to perform MPLS label switching, if equal-cost routes and their corresponding labels are configured on the device, the device performs load balancing for MPLS service traffic based on the labels. However, for the S5720-EI, load balancing cannot be performed when both implicit null labels with value 3 and non-implicit null labels function as the outgoing labels.
For the S5720-EI, S6720-EI, and S6720S-EI, you are not advised to deploy TE FRR in LDP over TE scenarios and you are advised to deploy a TE tunnel protection group or CR-LSP hot backup and deploy PHP on all PEs.