Does an AR support MPLS LDP

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Support for MPLS LDP:
- The AR120&AR150&AR160&AR200&AR500&AR510 do not support MPLS LDP.
- The AR120-S&AR150-S&AR160-S&AR200-S do not support MPLS LDP. Other -S models support MPLS LDP starting from V200R005C10.
- The AR530 and AR550 do not support MPLS LDP.
- Other models support MPLS LDP.

Other related questions:
Does an AR support MPLS TE
Support for MPLS TE: - The AR120&AR150&AR160&AR200&AR500&AR510 do not support MPLS TE. - The AR120-S&AR150-S&AR160-S&AR200-S do not support MPLS TE. Other -S models support MPLS TE starting from V200R005C10. - The AR530 and AR550 do not support MPLS TE. - Other models support MPLS TE starting from V200R002C01.

Why is no MPLS LSP generated after an MPLS LDP session is established
After a remote MPLS LDP session is established, the corresponding MPLS LSP cannot be generated if MPLS LDP is disabled on some interfaces. When MPLS LDP is disabled on an interface, the remote LDP session can be established. The LSP labels, however, are allocated hop by hop, which requires that MPLS LDP be enabled on all interfaces along the LSP.

Support for MPLS and requirement for a license on an S series switch
Support for MPLS VPN on S series switches (except the S1700) is as follows: - Switch model - Minimum version supporting MPLS VPN - S5710EI - V200R002 (The S5710EI is unavailable in V200R006 and later versions.) - S5700HI - V200R001 (The S5700HI is unavailable in V200R006 and later versions.) - S5710HI - V200R003 (The S5710HI is unavailable in V200R006 and later versions.) - S5720HI - V200R007C10 - S6700EI - V200R005 (The S6700EI is unavailable in V200R006 and later versions.) - S6720EI - V200R008 - S6720S-EI - V200R009 - S7703, S7706, and S7712 - V100R003 - S9700 - V200R001 - S12704 - V200R008 - S12708 and S12712 - V200R005 - S12710 - V200R010 - S9303, S9306, and S9312 - V100R002 - S9310 - V200R010 - S9300E - V200R002 Note: For a modular switch, a license is required for MPLS. For a fixed switch, no license is required for MPLS.

Why is LDP loop detection not required on the AR
LDP is generated based on IP routes. A routing protocol such as IS-IS or OSPF can avoid routing loop generation, so LDP loop detection is not required any more.

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