mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to verify MPLS LDP…
A network engineer runs the following command to verify MPLS LDP label bindings:
R1# show mpls ldp bindings 192.168.1.0 255.255.255.0
Output: lib entry: 192.168.1.0/24, rev 8 local binding: label: 101 remote binding: lsr: 10.0.0.2:0, label: 201 remote binding: lsr: 10.0.0.3:0, label: 301
What does this output indicate?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The prefix 192.168.1.0/24 has a local label of 101 and two remote labels from LDP neighbors
The output shows the label bindings for the prefix 192.168.1.0/24 in the Label Information Base (LIB). The local label is 101, and two remote labels (201 from 10.0.0.2, 301 from 10.0.0.3) have been received from LDP neighbors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The prefix 192.168.1.0/24 has a local label of 101 and two remote labels from LDP neighbors
Why this is correct
The output clearly shows the local binding (label 101) and two remote bindings from different LSRs.
- ✗
The prefix 192.168.1.0/24 is not reachable via any LDP neighbor
Why it's wrong here
Two remote bindings exist, indicating reachability via LDP neighbors.
- ✗
Label 101 is the only label assigned to this prefix in the network
Why it's wrong here
Remote labels 201 and 301 are also assigned by other LSRs.
- ✗
The LDP session with 10.0.0.2 is down
Why it's wrong here
A remote binding from 10.0.0.2 is present, indicating the LDP session is up.
Go deeper
Related to this question
Learn chapter
Introduction to ENARSI Exam and Network Fundamentals
Key term
MPLS Label Distribution
MPLS Label Distribution is the process by which routers exchange labels that tell them how to forward packets across a network without looking at the IP address each time.
Key term
LDP Protocol
LDP, or Label Distribution Protocol, is a protocol that routers use to automatically exchange labels that enable MPLS (Multiprotocol Label Switching) to create fast, efficient paths for data packets across a network.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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