The MPLS (Multiprotocol Label Switching) LSR ID must be configured before MPLS can be used. The address chosen must be a routable IP address on the switch. It is suggested that this be set to the same IP address as a routing protocol ID (for example, the OSPF (Open Shortest Path First) Router ID).
Note
The MPLS LSR ID must be configured before MPLS can be enabled. The LSR ID should be configured on a loopback VLAN (Virtual LAN).