Implementing Cisco SD-WAN Solutions (ENSDWI) — Question 293

An engineer must avoid routing loops on the SD-WAN fabric for routes advertised between data center sites. Which BGP loop prevention attribute must be configured on the routers to meet this requirement?

Answer options

• A. static routing on all WAN Edge routers instead of BGP
• B. same BGP AS between all CE and PE routers
• C. same OMP overlay-as on WAN Edge routers of all data centers
• D. same BGP AS between all WAN Edge routers and CE routers

Correct answer: C

Explanation

The correct answer is C, as configuring the same OMP overlay-as on WAN Edge routers ensures that routes are consistently recognized across the data centers, thus preventing loops. Options A and B do not address the BGP loop prevention directly, and option D, while related, focuses on the AS between WAN Edge and CE routers rather than the OMP configuration necessary for loop prevention.