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What MPLS function should be performed by a router that receives a data packet with an MPLS label value of 0?
Suggested Answer: B
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25 comments · newest first
DO
Dorsey
4 months ago
Right! Then it forwards the packet normally.
BR
Brigette
4 months ago
Exactly! It’s like saying, "I’m done with MPLS."
RE
Reuben
4 months ago
Yeah, it indicates the packet is at the end of the MPLS path.
ER
Eric
5 months ago
I think the router should pop the label.
PR
Providencia
6 months ago
I thought 0 meant something different in some cases?
NA
Nadine
6 months ago
It's just a label, but it means the packet is at the end of its MPLS path.
BE
Bernadine
6 months ago
Wait, are you sure it’s always 0? Sounds odd.
KA
Kasandra
6 months ago
Totally agree, that's standard MPLS behavior!
GA
Gabriele
6 months ago
The router should pop the label off the packet.
RE
Reena
6 months ago
Haha, I thought MPLS stood for "Mostly Pointless Label Switching"!
LA
Lai
7 months ago
The router should discard the packet, as a label value of 0 is invalid.
YA
Yasuko
7 months ago
Swap the MPLS label with a new value and forward the packet.
LE
Lenna
7 months ago
The router should pop the MPLS label and forward the packet based on the inner IP header.
AN
Annita
7 months ago
I’m a bit confused about the whole MPLS label stack. Does a label value of 0 mean it should just drop the packet or forward it normally?
LE
Lemuel
7 months ago
This kind of reminds me of a practice question where we had to identify what happens when a label is removed. I think it’s about forwarding the packet based on the IP header after popping the label.
FA
Fanny
8 months ago
I remember something about how a router should pop the label when it sees a 0, but I'm not entirely sure if that's the only action it takes.
LA
Lai
8 months ago
I think a label value of 0 means the packet is not labeled anymore, right? So the router should just treat it like a regular IP packet?
BR
Brandon
8 months ago
Ah yes, I remember now - label 0 indicates the packet is leaving the MPLS domain. The router should remove the label and route the packet based on the IP header.
MA
Matthew
9 months ago
I'm a bit unsure about this one. The MPLS label values can be confusing, but I'll try to reason through it step-by-step.
NI
Nicolette
9 months ago
Label 0 means the packet is exiting the MPLS network, right? So the router should probably pop the label and forward the packet based on the IP header.
PE
Pete
9 months ago
Okay, I know MPLS label 0 is special, but I can't quite remember what it means. Gotta review my MPLS notes for this one.
CO
Corinne
9 months ago
Hmm, this one's tricky. I'll need to think carefully about the MPLS label values and what they signify.
SH
Sharee
3 months ago
Exactly, it can't route without a valid label!
BE
Beckie
3 months ago
Yeah, a label value of 0 usually means it's not valid.
AR
Arlette
3 months ago
I think the router should drop the packet.