Hello guys, the followings are the detailed knowledge points of HCNP R&S H12-221-ENU certification test. Check below:

IP Basics
1.IPv4 address planning: classless IP address planning and Classless Inter-Domain Routing (CIDR)

OSPF Routing Protocols
1.Basic principles of link state routing protocols
2.OSPF principles, configuration, and implementation: neighbor and adjacency, protocol packet and LSA, database synchronization, intra-area route calculation, inter-area route calculation, and external route calculation
3.Principles and configuration of OSPF special areas: stub area, totally stub area, and not-so-stubby area (NSSA)
4.Basic methods of OSPF fault diagnosis

BGP Routing Protocols
1.BGP principles: AS, BGP neighbor, route distribution methods, and route advertisement rules
2.BGP path selection
3.BGP route aggregation
4.BGP routing policy: common attributes and routing policies of BGP
5.Basic principles and configuration of BGP route reflection and AS confederations for BGP
6.BGP multi-homing
7.BGP fault diagnosis methods

Routing and Routing Control
1.Route filtering by using filtering tools such as ACL, route policy, IP-prefix, and AS-Path
2.Mutual route import between IP routing protocols and advertisement of default routes
3.Policy-based route

Multicast Protocols
1.Basic principles and configuration of IGMPv1/v2/v3 and IGMP snooping
2.Basic principles and configuration of PIM-DM and PIM-SM