For CCNP or CCIE, Packet Tracer is useless. You need CML (Cisco Modeling Labs) or real gear.
Once installed, treat Packet Tracer as your digital whiteboard. It is not a replacement for reality, but it is the fastest way to simulate a failed OSPF neighbor adjacency while sitting on a train with your MacBook. cisco packet tracer download free mac
Remember: Always download from the official NetAcad portal to avoid security risks. Once installed, dive into building your first network—start with two PCs and a switch, then work your way up to OSPF, VLANs, and NAT. For CCNP or CCIE, Packet Tracer is useless