mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: A PE router has the following configuration: ip…
A PE router has the following configuration:
ip vrf CUSTOMER-D
rd 300:1 route-target export 300:1 route-target import 300:1 !
interface GigabitEthernet0/4 ip vrf forwarding CUSTOMER-D ip address 10.3.3.1 255.255.255.252
!
router bgp 65000 neighbor 10.0.0.1 remote-as 65000 neighbor 10.0.0.1 update-source Loopback0
! address-family vpnv4
neighbor 10.0.0.1 activate neighbor 10.0.0.1 send-community extended
exit-address-family ! address-family ipv4 vrf CUSTOMER-D
neighbor 10.3.3.2 remote-as 65002 neighbor 10.3.3.2 activate
exit-address-family
What is the effect of this configuration?
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 PE will successfully exchange VPNv4 routes with the remote PE and redistribute routes from CE into VPNv4.
The configuration is correct. The VRF has RD and RTs, the interface is in the VRF, the iBGP VPNv4 session is configured with extended community, and the eBGP session to the CE is configured under the VRF address-family. The PE will exchange VPNv4 routes with the remote PE and redistribute CE routes.
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 PE will successfully exchange VPNv4 routes with the remote PE and redistribute routes from CE into VPNv4.
Why this is correct
All necessary components are present: VRF with RT, iBGP VPNv4 session with extended community, and eBGP to CE under VRF.
- ✗
The eBGP session will fail because the neighbor is not activated under the global BGP process.
Why it's wrong here
For VRF peers, activation is done under the VRF address-family, not globally.
- ✗
The VPNv4 session will fail because the neighbor is not configured as a route-reflector client.
Why it's wrong here
Route-reflector is not required for a simple iBGP session; it is only needed if the PE is a route-reflector.
- ✗
The VRF will not import routes because the import and export RTs are the same.
Why it's wrong here
Having the same RT for import and export is common in many topologies.
Go deeper
Related to this question
Learn chapter
OSPF Neighbor Adjacency and Basics
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.
Key term
MP-BGP for VPN
MP-BGP for VPN is an extension of the Border Gateway Protocol that carries multiple types of network layer information to enable scalable, isolated virtual private networks over a shared provider infrastructure.
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JA
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.