How Should vEdge101 Be Configured for Private MPLS and Public Green TLOCs?
Refer to the exhibit. An engineer is performing a proof of concept before migrating to the Cisco Catalyst SD-WAN solution in the data center by configuring the WAN vEdge101 device. Which configuration accomplishes the task?
Community Insight
The exam tests associating SD-WAN TLOC colors with private versus public underlays; the trap is reversing MPLS and green or assigning both interfaces the same color family.
This 300-415 item tests the vEdge101 interface and TLOC color configuration for a data-center SD-WAN proof of concept. It establishes that the private MPLS transport must use a private color while the public transport uses green.
A frequent wrong answer treats both vEdge101 links as public or puts green on the private MPLS side, which breaks the intended private/public TLOC pairing.
Community Discussion (2 comments)
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Expert Analysis
Why the Answer Is Correct
Option D matches the exhibit's requirement to configure the WAN vEdge101 with one private transport and one public transport. In Cisco Catalyst SD-WAN, the interface color is part of the TLOC and tells OMP whether the transport is private, such as MPLS, or public, such as green. The exhibit's data-center POC uses MPLS as the private underlay and green as the public underlay, so each tunnel-interface must be configured with the matching color. Among the image choices, D is the one that assigns MPLS private and green public correctly.Why the Other Options Are Wrong
The other options either configure both links with the same color family, swap the private/public roles, or omit the correct tunnel-interface color pairing. If MPLS is marked public or green is marked private, the vEdge101 will not advertise the intended TLOC pair and the POC traffic will not select the correct transport. A configuration that does not distinguish private and public colors cannot satisfy the exhibit's two-transport requirement. Therefore A, B, and C do not accomplish the task.Community Comment Notes
Zizo_Yassin noted that "It must be one private color (e.g. MPLS) and one public color (e.g. green)." donciga reinforced the same mapping, saying "The private Network is the mpls color while the public network is the green color." The commenters converge on option D and on the private-MPLS/public-green rationale rather than on a single-color or reversed configuration.Exam Strategy
Look for the underlay role first: MPLS is private and green is public in this exhibit. Then check that the tunnel-interface color under each interface matches that role, and eliminate any option that uses the same color family on both links.
Frequently Asked Questions
Why does vEdge101 need one private MPLS color and one public green color?
The exhibit defines MPLS as the private transport and green as the public transport, so the TLOC colors must reflect those underlay roles for the POC to work.
What is wrong with configuring both vEdge101 interfaces as public colors?
It loses the private MPLS TLOC distinction and can form the wrong transport pairing, so it does not match the data-center migration design.
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