Which action can fox this issue?

Refer to the exhibit the 2.6.6.6/32 prefix is flapping when PE1 is flapping.

Which action can fox this issue?
A . On PE2, allow only redistribution from BGP into IS-IS on PE3, allow only redistribution from IS-IS into BGP
B . On PE2 and PE3 reconfigure redistribute BGP into IS-IS using the metric-type external parameter
C . configure a sham link between PE2 and PE3
D . configure all IS-IS instances as level-1-only

View Answer

Answer: A