Cisco CCNP CCIE Enterprise ENCOR 350-401 Master Course

Examine the Cisco enterprise network architecture, analyze the architecture model, and compare traditional multilayer campus design with the campus distribution layer, uncovering four models, their differences, functionality, and deployment benefits.

Explore the Cisco enterprise architecture model with the four modules—enterprise campus, enterprise edge, service provider edX, and remote locations—and how DNA guides automation for self-healing, self-defending, self-optimizing, and self-aware networks.

Design campus LANs with a hierarchical model to contain broadcasts and scale networks. Explore access, distribution, and core layers and compare layer two and layer three designs.

Examine campus distribution layer design options, comparing loop-free layer 3 networks with VLAN-based layer 2 access, and learn how fabric designs with overlay networks address loops, convergence, and gateway issues.

Explore the Cisco enterprise network architecture, its models, and core components, then compare land design options and the traditional three-layer (access, distribution, core) model for building Cisco networks.

Explore how a received frame is processed by distinguishing the control plane from the data plane, and examine switching mechanisms like process switching, fast switching, and Cisco Express Forwarding.

Explore layer 2 switch operation, including MAC addresses, the CAM table, and how unknown destinations trigger VLAN-based flooding for broadcast, unknown unicast, and multicast frames, with ACL and QoS support.

Learn how control plane learns routing information using protocols to build the routing table, while the data plane uses the forwarding table to rapidly forward packets on layer three devices.

Explore process switching, fast switching, and Cisco Express Forwarding, and learn how each uses CPU or hardware tables like the forwarding information base to accelerate routing decisions on Cisco switches.

Explain the control plane–data plane separation and three forwarding mechanisms—process lookup, fast cache, and Cisco Express Authority—and how the FIB is built before the first packet.

Revisit VLANs to understand how they segment broadcast domains into subnets, span multiple switches, and enable inter-VLAN routing; assign VLANs to ports, including access and voice VLANs.

Explore inter-VLAN routing using a layer-3 device to route between VLANs, via router-on-a-stick or a layer-3 switch, and consider subnets and trunking.

Explore VLAN concepts, including broadcast and collision domains, trunking with 802.1Q, and default and native VLAN 1. Learn inter-VLAN routing with router-on-a-stick or a layer 3 switch for scalable solutions.

Explore building redundant switched topologies by deploying spanning tree protocol, its types, multiple spanning tree protocol, and safeguards like bpdu guard and port fast.

Explore how the spanning-tree protocol prevents loops and broadcast storms by electing a root bridge, selecting root ports and designated ports, and blocking non-designated ports.

Explore how spanning tree protocol uses bpdu frames to elect the root bridge and assign designated ports, while handling topology changes with tcn and port states.

Explore spanning-tree protocol types from the original common spanning tree to PVST+ and rapid PVST, then MSTP, and learn default PVST+ configuration and VLAN load balancing.

Learn to group VLANs by destination in multiple spanning tree protocol, so switches route traffic toward data center or Internet, use trunks efficiently, and maintain redundancy with multiple instances.

Learn how PortFast speeds up access port convergence and how BPDU Guard prevents misconfiguration, with simple per-port or default configurations and straightforward verification commands.

Explore the evolution of spanning tree, topology change notifications, and multiple spanning tree. Use Port Fast to speed links and Beaugard to prevent accidental switch connections, improving load balancing.

Either channel aggregates multiple high-speed links into a single logical connection to deliver load balancing, redundancy, and higher bandwidth, with up to 16 ports and no mixing port types.

Explore etherchannel modes, including lacp for multi-link bundling and negotiation across devices, pagp for Cisco-only deployments, and static configurations, with up to 16 links and eight active at a time.

Identify ports on each switch and configure the channel group with the correct mode. Ensure identical speed and duplex on interfaces, and align VLANs to the trunk with the port-channel.

Explore EtherChannel load balancing options across multiple links, using destination IP, source IP, destination MAC, and port-based hashing, including XOR calculations for 2, 4, 8, or 16 links.

Troubleshoot etherchannel issues by identifying mismatches and ensuring both sides use compatible channel modes and protocols. Select an effective load balancing algorithm to prevent underutilized links.

Learn why port aggregation bonds multiple links to share bandwidth, explore static and other configurations, and note that mismatches on physical or port group interfaces cause issues with load balancing.

Explore how EIGRP operates, including the reliable transport protocol, adjacency relationships, complex metrics, and path selection with backup routes; examine unequal-cost load balancing for IPv6 and compare with RIP.

EIGRP uses a reliable transport protocol (RTP) to exchange hello messages, build neighbor tables, and update topology, using sequence numbers, acknowledgments, and queries to select a successor and feasible successor.

Establish eigrp neighbor adjacency by agreeing on the autonomous system number, k values, and metric components (bandwidth, delay, reliability, loading), with optional authentication and passive interfaces.

Explore how EIGRP uses a composite metric from bandwidth (minimum along the path) and delay, with load and reliability unused, plus wide metrics for high-speed links.

Learn how EIGRP builds a neighbor table, calculates advertised and feasible distances, and selects a successor and feasible successor for the best path.

Explore EIGRP for IPv6, including establishing neighbor relationships, using the dual algorithm to select the best path, and performing equal and unequal cost load balancing, with IPv6 support alongside IPv4.

Compare EIGRP and OSPF routing protocols, highlighting openness and multi-vendor support, ease of setup versus design requirements, and faster convergence with a feasible successor, plus IPv6 support.

Explore IRP as a reliable transport protocol for guaranteed frame delivery, topology exchange, bandwidth, delay, path selection, and successor and feasible successor calculations, IPv6 support, and comparison with OSPF.

Implementing OSPF explains how link-state routing uses the Dijkstra algorithm to build a link-state database, establish neighbor relationships, and exchange LSAs, covering single-area and multi-area SPF network types.

Describe how a link-state protocol shares interface state with LSAs, builds a topology database, and enables hierarchical networks using autonomous systems, backbone area, and additional areas.

Explore how the OSPF process uses a locally significant process ID and router ID, often from a loopback, to start advertising and discover neighbors.

Learn how OSPF neighbor adjacencies form through neighbor discovery and hello packets to 224.0.0.5 and 224.0.0.6, verify area IDs and authentication, and resolve mismatches before building the link-state database.

OSPF builds a link-state database from hello exchanges and database descriptions to form neighbor relationships, using five packets: hello, database description, link-state request, link-state update, and acknowledgement.

Explore ospf lsa types, including type one router, type two networks, type three summary, type four and five asbr and external lsas, how they describe areas and advertise routes.

Compare single-area and multi-area OSPF designs, highlighting backbone area, area border routers (ABR) and ASBR roles, and route summarization for scalable networks.

Discover the main ospf network types, including point-to-point and broadcast multi-access, plus non-broadcast multi-access. Learn about designated router and backup designated router elections and multipoint concepts.

Explore ospf, a link-state protocol, how it builds databases and neighbor relationships, and examine backbone and multiarea concepts, area structures, and ospi network types.

Optimize ospf by manipulating cost and applying prefix lists, distribute lists, and route maps to understand and implement ospf effectively.

Explain how ospf cost uses reference bandwidth divided by interface bandwidth, how the shortest path first algorithm builds the link-state database from neighbors, and how cost can be manually set.

Explore OSPF route summarization to design intelligent areas, summarize subnet ranges with area range and summary address commands, reduce inter-area LSAs, and improve network stability through resilient area boundaries.