350-501 Services Practice Question
Exhibit
Refer to the exhibit. PE1 configuration snippet: router bgp 65000 neighbor 10.0.0.2 remote-as 65000 neighbor 10.0.0.2 update-source Loopback0 ! address-family vpnv4 neighbor 10.0.0.2 activate neighbor 10.0.0.2 send-community extended ! address-family ipv4 vrf CUSTOMER_A redistribute connected ! CE1 configuration snippet: interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.0 no shutdown ! router bgp 65001 network 192.168.1.0 mask 255.255.255.0 neighbor 10.1.1.1 remote-as 65000
Refer to the exhibit. CE1 is not receiving the VPNv4 route for the 192.168.1.0/24 subnet. What is the most likely cause?
⚠ Common exam trap
Cisco often tests the distinction between VRF configuration and BGP address-family activation, tricking candidates into thinking a missing VRF is the issue when the real problem is the missing neighbor statement under the VRF address-family.
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
✓
PE1 is missing the neighbor statement under address-family ipv4 vrf CUSTOMER_A
For CE1 to receive the VPNv4 route for 192.168.1.0/24, PE1 must redistribute the route from the VRF into BGP. The neighbor statement under address-family ipv4 vrf CUSTOMER_A is required to establish an eBGP peering with CE1 and exchange IPv4 routes within that VRF. Without it, PE1 will not send any routes to CE1, even if the VRF and route targets are correctly configured.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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