hardMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to examine MPLS LDP…
A network engineer runs the following command to examine MPLS LDP neighbor details:
R1# show mpls ldp neighbor detail
Output: Peer LDP Ident: 10.0.0.2:0; Local LDP Ident 10.0.0.1:0 TCP connection: 10.0.0.2.646 - 10.0.0.1.55432 State: Oper; Msgs sent/rcvd: 123/456; Downstream on demand Up time: 1w2d LDP discovery sources: GigabitEthernet0/0, hello interval: 5 s, targeted: no Addresses bound to peer LDP Ident:
10.0.0.2 10.0.1.2 192.168.1.1
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 LDP session with 10.0.0.2 is operational and was discovered via link hello on GigabitEthernet0/0
The output shows detailed LDP neighbor information. The session is operational (State: Oper) for 1 week 2 days. The neighbor is directly connected via GigabitEthernet0/0 (non-targeted hello). The peer has multiple addresses bound to its LDP identifier.
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 LDP session with 10.0.0.2 is operational and was discovered via link hello on GigabitEthernet0/0
Why this is correct
State is Oper, and discovery source is GigabitEthernet0/0 with no targeted hello.
- ✗
The LDP session is using targeted hello
Why it's wrong here
The output explicitly says 'targeted: no'.
- ✗
The LDP session has been up for 1 minute and 2 seconds
Why it's wrong here
Up time is 1w2d (1 week, 2 days), not 1m2s.
- ✗
The neighbor is using downstream-on-demand label advertisement mode
Why it's wrong here
The output shows 'Downstream on demand', which is correct, but the question asks what the output indicates overall. Option A is the most comprehensive and accurate.
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Introduction to ENARSI Exam and Network Fundamentals
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.
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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