I am currently a CCNP holder and my certification is going to expire on August. Inorder to recertify my CCNP i am planning to take Qos 642-642 before August 02. Also i am looking forward to CCIP. My question is that whether i should take both 642-642 QOS and 642-691 BGP+MPLS before August 02 inorder to achieve CCIP ? Or is there any criteria like the gap between my BSCI (CCNP) and rest of CCIP ( Qos and BGP+MPLS) should not exceed 3 years?