Q: 10
DRAG DROP Drag and drop the MPLS terms from the left onto the correct definitions on the right. 
Drag & Drop
Discussion
P → device that forwards traffic based on labels, LSP → path that the labeled packet takes, CE → device that is unaware of MPLS labeling, PE → device that removes and adds MPLS labeling. Official lab guides match this mapping. Pretty standard stuff but worth reviewing lab sims just in case the exam throws slight wording changes.
PE → device that removes and adds the MPLS labeling, P → device that forwards traffic based on labels, CE → device that is unaware of MPLS labeling, LSP → path that the labeled packet takes. Trap is thinking P does the label add/remove, but that's always PE. Common exam wording, pretty sure this is right but lmk if anyone sees it different.
PE to removes/adds labeling, P to forwards by label, CE to unaware, LSP is labeled path.
Yeah, looks correct to me. P routers just forward by label, PE handles the MPLS label at the edge, CE is unaware of MPLS, and LSP is the labeled path. Seen this mapping show up a lot in exam reviews, but if anyone sees different mappings let me know.
Labs and official study guides always show PE -> removes/adds labels, P -> forwards by labels, CE -> unaware, LSP -> path.
PE -> device that removes and adds the MPLS labeling, P -> device that forwards traffic based on labels, CE -> device that is unaware of MPLS labeling, LSP -> path that the labeled packet takes. Pretty sure P forwarding vs PE label imposition trips people up.
Had something like this in a mock: device that forwards traffic based on labels = P, path that the labeled packet takes = LSP, device that is unaware of MPLS labeling = CE, device that removes and adds the MPLS labeling = PE. Confident this matches MPLS terminology but open to correction.
PE is the one that removes and adds MPLS labeling, P forwards based on labels, CE is totally unaware of MPLS, and LSP is just the actual path the labels follow. That's how Cisco's docs show it too. I think that's spot on but open to a counter if someone sees a twist.
Nah, Nathan, think the trap is mixing up PE and P. Device that forwards traffic based on labels is P, PE does the label add/remove at the edge. LSP = labeled path, CE doesn't see labels.
Yeah, looks like the standard mapping to me: P forwards by label, LSP is the labeled path, CE doesn't do MPLS, PE adds/removes labels. Pretty sure that's right but let me know if I missed something.
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