10 Questions
What is the purpose of a Label-switched path (LSP)?
To route traffic from Ingress LSR to Egress LSR following a specific path.
What is a Forwarding Equivalence Class (FEC)?
A group or flow of packets that forwards to the same next-hop, shares the same egress interface, and gets the same treatment (QoS).
What is the function of a Label Distribution Protocol (LDP)?
To distribute labels among LSRs in an MPLS network.
Where does a router keep the Label Information Base (LIB)?
The router keeps the LIB information in its memory.
What is the purpose of the Routing Information Base (RIB) in MPLS?
To store routing information used by the router to make forwarding decisions.
Explain the operation of 'POP' in MPLS label switching.
POP involves removing the MPLS label at the Egress LSR before forwarding the packet based on IP information.
What does the Edge Label Switching Router (eLSR) do in an MPLS network?
The eLSR is responsible for processing incoming IP packets and attaching MPLS labels for forwarding.
What is the role of the Forwarding Information Base (FIB) in MPLS routing?
FIB is used to make forwarding decisions based on labels, directing packets to the appropriate egress interface.
Explain the 'SWAP' operation in MPLS label switching.
SWAP involves replacing the current label with a new label at an Intermediate LSR.
Why are 'Hello' messages used in the Label Distribution Protocol?
To establish and maintain neighbor relationships between LSRs for label distribution.
Test your knowledge on MPLS (Multiprotocol Label Switching) network basics such as label assignment, LSPs, FECs, LERs, and LSRs. Understand the concepts of IP packets division and MPLS routers' roles.
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