Courseiva
← 300-410
Full test
Question 1,501 of 2,152
MPLS Operations →hardMultiple ChoiceObjective-mapped

LDP Default Label Distribution Control Mode

This 300-410 practice question tests your understanding of mpls operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: independent Label Distribution Control. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

In MPLS, what is the default label distribution control mode for LDP on Cisco IOS-XE?

Quick Answer

The answer is Ordered Label Distribution Control mode. This is the default for LDP on Cisco IOS-XE because it ensures that a router will only advertise a label for a Forwarding Equivalence Class (FEC) if it has already received a label from its next-hop router or if it is the egress router itself. This prevents label black holes and guarantees that label-switched paths (LSPs) are built hop-by-hop from the egress back to the ingress, maintaining end-to-end label consistency. On the Cisco CCNP ENARSI 300-410 exam, this concept tests your understanding of MPLS control plane behavior, often appearing in questions that contrast Ordered mode with Independent mode, where a router advertises a label without waiting for its downstream neighbor. A common trap is assuming Independent mode is the default, but Cisco IOS-XE strictly uses Ordered to avoid forwarding loops. Memory tip: think “Ordered” as “Only after Downstream” — the router waits for the next hop’s label before advertising its own.

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

✓

Independent Label Distribution Control mode

The default label distribution control mode for LDP on Cisco IOS-XE is Independent. In Independent mode, a router can advertise a label for a FEC as soon as it has forwarding information (e.g., a route) for that FEC, without waiting for a label from its next hop. Ordered mode, on the other hand, requires the router to wait for a label from the next hop before advertising, which is not the default for LDP (though it is used for RSVP-TE and other applications).

Key principle: Independent Label Distribution Control

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Ordered Label Distribution Control mode

    Why it's wrong here

    Ordered Label Distribution Control mode is not the default for LDP on Cisco IOS-XE. It requires explicit configuration or is used with other protocols like RSVP-TE.

  • ✓

    Independent Label Distribution Control mode

    Why this is correct

    Independent Label Distribution Control mode is the default for LDP on Cisco IOS-XE. Routers can advertise labels without waiting for downstream labels, which is the correct answer.

    Related concept

    Independent Label Distribution Control

  • ✗

    Liberal Label Retention mode

    Why it's wrong here

    Liberal Label Retention mode is a label retention mode, not a control mode. It retains all received labels even if not used, but it is not related to the ordering of label advertisement.

  • ✗

    Conservative Label Retention mode

    Why it's wrong here

    Conservative Label Retention mode is another label retention mode where only labels from next-hop peers are retained. It is not a label distribution control mode and is not the default for LDP.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many candidates mistakenly think Ordered is the default for LDP, but it is actually Independent. Ordered is used in MPLS TE or when explicitly configured.

Detailed technical explanation

How to think about this question

Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.

KKey Concepts to Remember

  • Independent Label Distribution Control
  • Ordered Label Distribution Control

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Independent Label Distribution Control

Real-world example

How this comes up in practice

A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Independent Label Distribution Control Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Review independent Label Distribution Control, then practise related 300-410 questions on the same topic to reinforce the concept.

Related practice questions

Related 300-410 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Layer 3 Technologies practice questions

Practise 300-410 questions linked to Layer 3 Technologies.

EIGRP Troubleshooting practice questions

Practise 300-410 questions linked to EIGRP Troubleshooting.

OSPF Troubleshooting (v2/v3) practice questions

Practise 300-410 questions linked to OSPF Troubleshooting (v2/v3).

BGP Troubleshooting practice questions

Practise 300-410 questions linked to BGP Troubleshooting.

Route Redistribution practice questions

Practise 300-410 questions linked to Route Redistribution.

Policy-Based Routing (PBR) practice questions

Practise 300-410 questions linked to Policy-Based Routing (PBR).

VRF-Lite practice questions

Practise 300-410 questions linked to VRF-Lite.

Route Maps and Route Filtering practice questions

Practise 300-410 questions linked to Route Maps and Route Filtering.

Administrative Distance practice questions

Practise 300-410 questions linked to Administrative Distance.

Route Summarization practice questions

Practise 300-410 questions linked to Route Summarization.

Bidirectional Forwarding Detection (BFD) practice questions

Practise 300-410 questions linked to Bidirectional Forwarding Detection (BFD).

VPN Technologies practice questions

Practise 300-410 questions linked to VPN Technologies.

Practice this exam

Start a free 300-410 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions20 questions30 questions50 questionsTimed 30
300-410 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this 300-410 question test?

MPLS Operations — This question tests MPLS Operations — Independent Label Distribution Control.

What is the correct answer to this question?

The correct answer is: Independent Label Distribution Control mode — The default label distribution control mode for LDP on Cisco IOS-XE is Independent. In Independent mode, a router can advertise a label for a FEC as soon as it has forwarding information (e.g., a route) for that FEC, without waiting for a label from its next hop. Ordered mode, on the other hand, requires the router to wait for a label from the next hop before advertising, which is not the default for LDP (though it is used for RSVP-TE and other applications).

What should I do if I get this 300-410 question wrong?

Review independent Label Distribution Control, then practise related 300-410 questions on the same topic to reinforce the concept.

What is the key concept behind this question?

Independent Label Distribution Control

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Keep practising

More 300-410 practice questions

Browse all 300-410 questions →

Last reviewed: Jun 18, 2026

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

Sign in to join the discussion.

This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.