Quickly Check Path of TE Tunnel
Question
When configuring traffic engineering tunnels in Cisco MPLS core network, you see the traffic is not tacking the expected path in the core.
Which command do you use to quickly check path of a TE tunnel?
Answers
Explanations
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A. B. C. D.D.
The correct answer to the question is B. "show mpls traffic-engineering tunnels."
When traffic engineering (TE) tunnels are configured in a Cisco MPLS core network, the purpose is to optimize the use of network resources and provide faster and more efficient routing of traffic. However, sometimes the traffic may not follow the expected path, and it's necessary to quickly check the path of a TE tunnel.
The command "show mpls traffic-engineering tunnels" is used to display the current status and path of all the TE tunnels in the network. It provides detailed information on the path taken by each tunnel, including the source and destination addresses, the tunnel ID, the path options, and the bandwidth.
On the other hand, the command "traceroute" and "ping" are used to test connectivity and path between devices, but they do not provide specific information on the path taken by a TE tunnel.
Finally, the command "traceroute mpls ipv4" is used to trace the path of an MPLS packet through the network, but it requires the configuration of explicit path options or the use of the Penultimate Hop Popping (PHP) feature, and it may not always provide accurate information about the path taken by a TE tunnel.
Therefore, the best option to quickly check the path of a TE tunnel in a Cisco MPLS core network is to use the "show mpls traffic-engineering tunnels" command.
