These notes offer a complete walkthrough of advanced networking concepts and practical configurations aligned with Cisco’s CCNP Enterprise certification track. Spanning 165 pages, the content features structured step-by-step commands, theoretical explanations, and troubleshooting guidelines sourced from hands-on lab setups, real-world applications, and official Cisco behavior.
Topics include:
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Switching & Layer 2 Concepts: VLANs, DTP, trunk encapsulation (ISL/Dot1Q), native VLAN settings, and switchport configuration.
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VTP (VLAN Trunking Protocol): Modes (server, client, transparent), domain configuration, pruning, and VTP version 3 enhancements.
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STP & Redundancy: Full explanation of 802.1D STP, RSTP, MSTP, HSRP, VRRP, GLBP with authentication, timers, load balancing, and failover design.
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Routing Protocols: Deep coverage of EIGRP (DUAL algorithm, feasible successor, metric calculation, route filtering), OSPF (network types, DR/BDR elections), and BGP (FSM, path attributes, IBGP/EBGP neighbors, update and keep-alive).
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Network Services & Security: AAA, SNMP, Syslog, IP Telephony basics, voice VLANs, and DHCP on multilink PPP interfaces.
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Advanced Features: PPPoE configuration, policy-based routing, route redistribution, IP SLA for next-hop validation, EtherChannel with LACP/PAgP, and Layer 2 security measures.
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Network Design Principles: Access, distribution, and core layers including hardware redundancy (RPR, RPR+, SSO), CEF switching, NSF, and best practices for QoS.
Each configuration block is annotated with Cisco IOS syntax, operational examples, and mode-specific behavior, helping learners bridge theoretical knowledge with CLI-based deployment. These notes align with CCNP Enterprise core modules such as:
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CCNP ENCOR (350-401): Core Networking, Infrastructure, Virtualization, Security, Automation
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CCNP ENARSI (300-410): Advanced Routing, VPN Services, Infrastructure Services, Security, and Automation
About the Material:
This 165-page document compiles expert-level explanations and all essential configuration steps required for mastering switching and routing at the professional certification level. Authored by a top-performing candidate in the CCNP track, this guide is optimized for exam preparation, field engineering roles, and enterprise network troubleshooting contexts.
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