JNCIS-SP MPLS PART 1F

Introduce MPLS fundamentals and label distribution protocols like LDP and RSVP, with provider VPN scenarios and practical documentation to aid future reference and review.

Explore the physical network topology and how virtualization layers—ESX, Red Hat, and Ubuntu Server environments—connect via a common switch and bridge, with Ansible-driven configurations in a lab setup.

Explore MPLS basics, including label switching, forward decisions with longest match, and how label distribution protocols like LDP or RSVP enable traffic engineering and LSPs.

Map MPLS naming conventions from customer edge to transit and penultimate hop popping, detailing the entry point, label switching path, label stack, and multipoint end-to-end routing.

Describe how MPLS inserts a label between the IP header and the link, enabling label switched path forwarding and label distribution protocols.

Construct an lsp between routers using RSVP and OSPF, observe label distribution and exchange, and forward traffic with the label stack rather than routing tables.

Explore MPLS label types, including implicit and explicit labels, and how a central router uses label lookup and IP lookup to forward packets through an LSP with a label stack.

Explore the five essential MPLS label operations on a packet, including push, swap, replace, and pop, plus label stacking and the s-bit that governs the header order.

Explore the label distribution protocol (LDP) for MPLS, its role alongside BGP and RSVP, and how LDP sessions, hello packets, and notification messages establish label mapping across a simulated topology.

Configure LDP with BGP next hop in an MPLS topology and establish iBGP sessions. Verify iBGP sessions between R1, R2, and R3, export static routes, and observe labels.

Configure ldp on all interfaces after ensuring an igp is running, using interface groups for consistency. Validate ldp neighbors and adjacency across logical systems to enable mpls label distribution.

Explore LDP authentication for MPLS, configure session-based authentication with key chains, and understand neighbor establishment and how authentication impacts LDP sessions and label distribution.

Explore RSVP overview, its role with IGP for traffic engineering, and how RSVP enables label exchange through messages, filters, and ipv4/ipv6 support.