Ping Command for Locally Connected CE Router Interface in VPN-A Routing Instance - JN0-360 Exam

E

The correct answer to this question is option C, "ping vpn-instance VPN-A 192.168.1.1".

Explanation:

In a Layer 3 VPN, the Customer Edge (CE) routers are connected to the Provider Edge (PE) routers, and the PE routers use a VPN routing-instance to isolate the VPN traffic from other VPNs and the global routing table. In this scenario, we need to ping the locally connected CE router's interface with the IP address 192.168.1.1.

To accomplish this task, we need to use the "ping" command with the correct syntax. The "ping" command is used to test the connectivity between two network devices by sending ICMP packets. In a Layer 3 VPN, we need to specify the VPN routing-instance in the "ping" command, so that the PE router knows which VPN traffic to use.

The correct syntax for the "ping" command in this scenario is:

ping vpn-instance VPN-A 192.168.1.1

Here, "vpn-instance" is the keyword used to specify the VPN routing-instance, " VPN-A" is the name of the VPN routing-instance we want to use, and "192.168.1.1" is the IP address of the CE router's interface we want to ping.

Option A, "ping routing-instance VPN-A 192.168.1.1", is incorrect because "routing-instance" is not a valid keyword for the "ping" command. The correct keyword is "vpn-instance".

Option B, "ping instance VPN-A 192.168.1.1", is incorrect because "instance" is not a valid keyword for the "ping" command in a Layer 3 VPN.

Option D, "ping VPN-A 192.168.1.1", is incorrect because it does not specify the correct syntax for the "ping" command in a Layer 3 VPN. We need to use the "vpn-instance" keyword to specify the VPN routing-instance.

Option E, "ping mpls l3vpn VPN-A 192.168.1.1", is incorrect because it uses the deprecated "mpls l3vpn" syntax for Layer 3 VPNs, which is no longer recommended. The correct keyword to use is "vpn-instance".