Computer Networking › Section F · The link layer and LANs › Topic F.5
Link virtualization: MPLS
To the network layer, a link is just a pipe between two routers, but the pipe can itself be a whole network. Multiprotocol Label Switching is the best-known example: a network of label-switching routers that presents itself to IP as a set of links.
In this topic
- A network that pretends to be a link
- Why switch on labels?
- The MPLS header
- Label-switched paths
- Worked example: following one packet
- How labels get set up
- Worked example: traffic engineering
- Stacked labels and VPNs
- Common mistakes to avoid
- Key takeaways
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