<｜begin▁of▁sentence｜>
### Instruction:
What is the significance of Route Distinguisher (RD) in Cisco IOS XR MPLS VPNs?
### Response:
The Route Distinguisher (RD) in Cisco IOS XR MPLS VPNs is used to distinguish between identical IP prefixes in different VPNs, allowing for overlapping address spaces while keeping the traffic segregated.
<|EOT|>
