Hola Alvaro,
Para la pregunta:
474. Refer to the exhibit. The administrator is troubleshooting a BGP peering between PE1 and PE3 that is unable to establish. Which action resolves the issue?
Pienso que la respuesta correcta seria la C.- Remove the traffic filtering rules on P2 blocking the BGP communication between PE1 and PE3,
ya que en el debug hay una línea que dice lo siguiente:
*Feb 22 14:04:12.375: ICMP: dst (10.255.255.1) administratively prohibited unreachable rcv from 10.0.12.2
quedo pendiente de tus comentarios.
Saludos!