R3 is announcing a route to R4 using EBGP, as shown in the exhibit. All routers in AS 65221
should learn this route, but it should not be announced to any other AS. What can be done to
enforce this behavior?
R3 should add the community no-export to the route prior to announcing it.
R3 should add the community no-advertise to the route prior to announcing it.
R4 should add the community no-announce after receiving the route.
R4 should add the community no-advertise after receiving the route.
One Comment on “What can be done to enforce this behavior?”
no-export—Routes in this community must not be advertised outside a BGP confederation boundary.