Correct answer & explanation
✓VRF-Lite: Uses only VRFs without MPLS labels for path isolation
VRF-Lite uses only VRFs without MPLS labels; MPLS VPN uses labels for isolation; VRF-Lite is limited to a single router; MPLS VPN scales across the core; VRF-Lite does not require MP-BGP; MPLS VPN uses MP-BGP for VPNv4 route exchange.
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Same concept, more angles
1 more way this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop each VRF-Lite or MPLS VPN characteristic on the left to its matching description on the right.
hard- ✓ P1.VRF-Lite: Uses trunk ports and subinterfaces to separate traffic without MPLS
- ✓ P2.MPLS VPN: Employs MPLS labels and MP-BGP to isolate paths across multiple routers
- ✓ P3.VRF-Lite: Typically limited to a single device or directly connected switches
- ✓ P4.MPLS VPN: Allows overlapping customer IP addresses across different sites
- ✓ P5.VRF-Lite: Does not require an IGP or LDP in the core
Why P1: VRF-Lite uses only local VRFs without MPLS or MP-BGP, requiring trunk links; MPLS VPN uses MPLS labels and MP-BGP for scalable path isolation; VRF-Lite is simpler but limited to a single router or switch; MPLS VPN scales across an entire provider network; VRF-Lite does not support overlapping address spaces between sites without NAT.
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