Exam NSE7_SDW-7.2 topic 1 question 54 discussion

D is correct. This is described on page 141 in the 7.2 Study Guide.

https://community.fortinet.com/t5/FortiGate/Technical-Tip-When-to-use-BGP-route-tag-in-SD-WAN-rule-s/ta-p/229720

I'm voting for D. The admin guide says: SD-WAN rules can use Border Gateway Protocol (BGP) learned routes as dynamic destinations.

I think the answer is A. Route tags are not specific to BGP. BGP does have them but so does OSPF. Communities are specific to BGP but route tags can be used in any routing protocol.

SG p141: "Configure SD-WAN *rules* to steer traffic to members only if routes have a specific route-tag." Agree with Cyril - although A says the largely same thing as D, route-tag specifically get used by the SD-WAN rule to determine next-hop (i.e., destination). SG p 142 shows "how an administrator can use [route-]tags in SD-WAN rules." This is a crappy question.

Both A & D are vague, but they're saying the same thing, with D being more SDWAN-ish. we use tags so that we can use them as match conditions when we steer traffic to them that's the reason you'd go through the trouble of tagging/colouring your route prefixes. Because SDWAN can change routes for any number of reason, we want these specifi routes to be easily identifiable so we can route/steer traffic towards them in a specific way. #sorry..that was a mouthful

D: once you setup a route tag on the config service under the sdwan section then it appears as the destination in the sdwan rule. also: Route tag is one of the criteria you can use to determine which traffic matches an SD-WAN rule

If you look at the image on page 141 it states "The rule can only use routes that have the tag set" - the answer is A. D is talking about setting a destination when the route-tag is simply defining what routes are able to be used.

D is correct, study guide page 141