Is the MPLS VPN RD of the AR router globally unique

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A VPN-IPv4 address consists of 12 bytes. The first 8 bytes represent the RD and the last 4 bytes represent the IPv4 address prefix. The RDs are used to distinguish IPv4 prefixes with the same address space. IPv4 addresses with RDs are VPN-IPv4 addresses (VPNv4 addresses). After receiving IPv4 routes from a CE, a PE converts the routes to globally unique VPN-IPv4 routes and advertises the routes on the public network. Each service provider can independently allocate RDs . When CEs are dual-homed to PEs, RDs must be globally unique to ensure correct routing.

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Is the MPLS VPN RD of the AR router globally unique
A VPN-IPv4 address consists of 12 bytes. The first 8 bytes represent the RD and the last 4 bytes represent the IPv4 address prefix. The RDs are used to distinguish IPv4 prefixes with the same address space. IPv4 addresses with RDs are VPN-IPv4 addresses (VPNv4 addresses). After receiving IPv4 routes from a CE, a PE converts the routes to globally unique VPN-IPv4 routes and advertises the routes on the public network. Each service provider can independently allocate RDs . When CEs are dual-homed to PEs, RDs must be globally unique to ensure correct routing.

Whether a license is required for MPLS on the AR router
The AR router can use MPLS without a license.

MPLS VPN supported by USG firewalls
The USG2000, USG5000, and USG6000 support MPLS VPN.

Which interfaces can be configured with MPLS
MPLS can be configured on the following interfaces: - GE interface - GE sub-interface - XGE interface (V200R005C10 and later versions) - XGE sub-interface (V200R005C10 and later versions) - Ethernet interface - Ethernet sub-interface - Eth-Trunk - Eth-trunk sub-interface - Serial interface - POS interface - MP-Group - IP-Trunk (V200R005C10 and later versions)

Configuring L2 MPSL VPN and L3 MPLS VPN in backup mode on USG firewalls
The USG firewalls do not support the configuration of L2 MPSL VPN and L3 MPLS VPN in backup mode.

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