CCNP SPCOR 350-501 · Services · L3VPN

MPLS Layer 3 VPN

How one provider core carries many customers with overlapping addresses: VRFs, route distinguishers and route targets, MP-BGP VPNv4 between PEs, the two-label stack that keeps the core BGP-free, PE-CE routing with eBGP (and as-override), and a troubleshooting order that separates control-plane from data-plane faults.

32 min read9 chapters2 labs15 quiz7 scenarios15 interview Q&A

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Inside this module

  • Lab · One customer, two sites, a BGP-free core
  • Lab · Troubleshoot: the VPN that half works
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