JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing — Question 10

You are logged into a PE router participating in a Layer 3 VPN as defined in RFC 4364. You would like to ping the locally connected CE router's interface. The address of the interface is 192.168.1.1; the VPN routing-instance is named VPN-A. Which command will accomplish this task?

Answer options

• A. ping routing-instance VPN-A 192.168.1.1
• B. ping instance VPN-A 192.168.1.1
• C. ping vpn-instance VPN-A 192.168.1.1
• D. ping VPN-A 192.168.1.1
• E. ping mpls l3vpn VPN-A 192.168.1.1

Correct answer: E

Explanation

The correct command is 'ping mpls l3vpn VPN-A 192.168.1.1' because it specifies the MPLS Layer 3 VPN context needed to successfully reach the CE router's interface. The other options do not use the correct syntax or context required for a Layer 3 VPN ping command, making them invalid for this task.