Your customer complains that their Layer 3 VPN is not passing traffic from one site to another. You assigned that customer to VPN-A. Which command on the PE router will confirm the presence of customer routes?
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A. B. C. D.D
The correct answer is D. show route table VPN-A.inet.0.
Explanation:
In a Layer 3 VPN scenario, the customer routes are learned and stored on the Provider Edge (PE) routers in a separate routing table, usually named as " VPN-A.inet.0", where VPN-A represents the name of the VPN instance assigned to the customer.
To confirm the presence of customer routes in the VPN-A instance, we can use the "show route" command on the PE router. However, the correct syntax and table name must be used to retrieve the correct information.
Option A, "show route VPN-A", will show all routes for the VPN-A instance, but it may not necessarily show the customer routes specifically. It may also display routes for other protocols or routing instances.
Option B, "show route VPN-A table bgp.l2vpn.0", shows the Layer 2 VPN routes for the VPN-A instance, which are not relevant to the Layer 3 VPN issue.
Option C, "show route table inet.3 VPN-A", shows the global unicast routing table for the router, which includes all routes learned from all routing protocols, and not just the customer routes for the VPN-A instance.
Therefore, the correct option is D, "show route table VPN-A.inet.0". This command shows the routing table specifically for the VPN-A instance, which includes only the customer routes learned through the VPN-A routing protocol. This command will confirm the presence of customer routes for troubleshooting the Layer 3 VPN issue.