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The CCIE Routing and Switching certification covers a wide range of advanced networking topics. Here are the key knowledge points you should focus on:
1) Network Principles:
• Understanding network theory, including software architecture differences between IOS and IOS XE.
• Concepts like control plane and forwarding plane, Cisco Express Forwarding (CEF), and general network challenges such as unicast flooding and asymmetric routing.
2) Layer 2 Technologies:
• Mastery of VLANs, VLAN Trunking, and Spanning Tree Protocol (STP).
• Knowledge of EtherChannels, port security, and other Layer 2 security features.
3) Layer 3 Technologies:
• In-depth understanding of IP addressing, IP services (ARP, NTP, DHCP, NAT, SNMP, NetFlow), and routing protocols (RIP, EIGRP, OSPF, BGP, IS-IS).
• Skills in route redistribution, route summarization, and performance routing.
4) VPN Technologies:
• Familiarity with MPLS, DMVPN, and other VPN technologies.
• Understanding of IPsec and GRE tunnels.
5) Infrastructure Security:
• Knowledge of device security features, including AAA, RADIUS, TACACS+, and control plane policing.
• Understanding of network security protocols and best practices.
6) Infrastructure Services:
• Proficiency in QoS concepts and configurations.
• Knowledge of multicast routing and services.
7) Network Troubleshooting:
• Ability to use IOS troubleshooting tools like debug, ping, traceroute, and embedded packet capture.
• Skills in diagnosing and resolving network issues using a structured troubleshooting methodology.
8) Evolving Technologies:
• Awareness of emerging technologies and trends, such as SDN, network programmability, and automation.
These topics are essential for both the written and lab exams of the CCIE Routing and Switching certification. Good luck with your preparation! If you have any specific questions or need further details, feel free to ask.