easyMultiple Choice
300-410 Practice Question: The default BGP hold timer value in an MPLS L3VPN…
What is the default BGP hold timer value in an MPLS L3VPN deployment on Cisco IOS-XE?
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
✓
180 seconds
The default BGP hold timer is 180 seconds, meaning a peer is declared dead if no keepalive or update is received within that interval.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
60 seconds
Why it's wrong here
60 seconds is the default BGP keepalive timer, not the hold timer. The hold timer defaults to 180 seconds. 60 seconds is tempting because it is the keepalive interval, but the question asks for the hold timer, which is three times the keepalive value.
- ✗
90 seconds
Why it's wrong here
The default BGP hold timer is 180 seconds, not 90. The keepalive timer is 60 seconds, one third of the hold time. 90 seconds is tempting because it is half the correct value, but Cisco IOS-XE uses 180 seconds unless explicitly configured otherwise.
- ✗
120 seconds
Why it's wrong here
120 seconds is not the default BGP hold timer. The default is 180 seconds, with a 60-second keepalive. 120 seconds is tempting as a round number, but it does not match the Cisco IOS-XE default, which remains 180 seconds regardless of MPLS L3VPN deployment.
- ✓
180 seconds
Why this is correct
Cisco IOS-XE defaults the BGP hold timer to 180 seconds, with the keepalive timer derived as one third of that, giving 60 seconds. MPLS L3VPN deployments do not alter these defaults, so peers tear down a session only after 180 seconds of silence.
Go deeper
Related to this question
Learn chapter
MPLS L3VPN Basics
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 Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.