CCNP Switch

Learn layer-2 switching: switches use MAC address tables to forward frames with per-port bandwidth. Explore collision-domain isolation, frame flooding for unknown destinations, and dynamic CAM table learning with ACLs.

Learn how the mac address table and cam table learn, age, and purge addresses, resolve mac flapping, and tune sdm templates to balance unicast routing and mac resources.

Explain fast ethernet and gigabit links, copper and fiber cabling, distance limits, and auto negotiation for speed and duplex, with campus and metropolitan area networks in mind.

Discover cdp neighbors detail to identify device id, platform, interface, ios version, and ip address, enabling login and network mapping. Compare with lldp for multi vendor environments.

Learn to segment networks with vlans to prevent broadcasts, assign per-port vlan membership, and manage vlan IDs from 1 to 1005, including extended vlans.

Compare static and dynamic VLANs, explain how dynamic VLANs map devices via MAC addresses using a VLAN membership server, and explain one-to-one VLAN to subnet guidance to contain broadcasts.

Learn how trunking carries multiple VLANs between switches with 802.1Q and ISL encapsulation, native VLAN behavior, and how trunk ports activate interface VLANs.

Learn trunk configuration on switches by setting switch port mode trunk, understanding administrative and operational trunking, dynamic auto and desirable, and how encapsulation, negotiation, and native VLANs shape trunk behavior.

Learn how to configure switch port trunks, set trunk encapsulation (isl and dot1q), manage native and allowed vlans, and control negotiation and pruning for robust CCNP Switch trunking.

DTP is a Cisco proprietary layer 2 protocol that negotiates trunking between two switches, sending frames every 30 seconds and using 802.1Q encapsulation in the same VTP domain.

explains how DTP negotiation affects trunk ports and when to disable it, and guides configuring trunk and access ports with dot1q tagging, encapsulation, and native land considerations to avoid issues.

Configure ip phones on a switch by separating data and voice traffic using voice vlan 30 and data vlan 10, enable portfast, and consider trunking security.

Explore how VTP domains govern VLAN advertisements, server and client roles, and transparent mode, and learn revision handling, domain changes, and hash-based verification.

Learn how VTP revision numbers propagate across switches when you modify VLANs or passwords, and how pruning and VTP modes (server, client, transparent) affect VLAN advertisements.

Learn how to prune VLAN traffic on trunk links using switch port trunk pruning and manual pruning, and understand how pruning interacts with spanning tree and VLAN 1 limitations.

Spanning tree creates a loop-free topology by electing a root bridge using the lowest priority and MAC, then blocking links and using BPDU messages to announce path costs.

Explore how spanning tree uses interface costs and bandwidth to elect the root port and designate ports, guided by BPDU exchanges and cost calculations.

Explore how spanning tree designates a port and blocks others when costs tie, using lower priority, MAC address, and port ID as tiebreakers, and how topology change notifications drive convergence.

Explore spanning tree port roles and states, including root and designated ports, alternate and backup paths, and blocking to forwarding transitions, with edge ports and topology change concepts.

Explore how spanning tree uses hello timers and forward delay to move ports from blocking to learning and forwarding, enabling MAC address learning. Grasp root bridges and diameter effects.

Use debug spanning tree commands to observe how BPDU messages drive topology changes, port states, and root bridge selection, while exploring port IDs, forward delay, and priority settings.

Explore how spanning tree uses port costs to elect the root, root port, and designated ports, and how changing costs alters blocking and forwarding decisions. See how manipulating port costs shifts the fastest path to the root, creating alternate and root ports and affecting MAC address learning and traffic flow.

Learn how spanning tree elects the root bridge and designates ports, then manipulate root port status and blocking versus forwarding by adjusting costs and priorities across switches.

Master how port priority shapes spanning tree roles, turning ports into root, designated, or backup ports in shared segments, with hands-on lab demonstrations using switch-to-switch and hub connections.

Learn how bpdu guard and port fast affect spanning tree on switch ports, including bypassing listening and learning delays and how root guard prevents a port from becoming a root.

Explore spanning-tree guard concepts to prevent unwanted root port changes by enabling root guard and bpdu guard on edge and access ports, while avoiding uplinks, and verify via show commands.

Learn how BPDU guard prevents loops by blocking rogue switches and triggering error-disabled ports. Configure BPDU guard globally or on interfaces and read spanning-tree outputs to ensure stability.

Explore BPDU guard and BPDU filter on Cisco switches, including global versus interface configuration, PortFast implications, and loop guard and link detection to prevent network loops.

Learn how UDLD detects unidirectional links on fiber and copper, using bidirectional port IDs in frames, timers, and aggressive versus normal modes to keep port channels healthy.

Learn how rapid spanning tree speeds convergence over legacy spanning tree by using bpdu version 2 and streamlined port states, including discarding and faster transitions.

Explore rapid spanning tree concepts, including edge ports and port fast, and learn how proposals, agreements, and tc notifications enable fast convergence and blocking of non-edge ports.

Compare common spanning tree with per-VLAN spanning tree and learn how multiple spanning tree assigns VLANs to distinct instances for optimized load balancing.

Master how load balancing interacts with multiple spanning tree regions, instances, and virtual switches to manage boundary traffic in networks.

Configure boundary-aware spanning-tree setups by examining regional boundaries, internal spanning tree, and the common spanning tree across multiple regions in a hands-on lab.

Configure spanning tree across multiple regions, monitor boundary and root bridge roles, and observe port blocking and convergence as revisions propagate to form a single common spanning tree.

Learn to configure multiple spanning-tree instances in a regional msde setup, set root bridges by priority, align instances across switches, and manage boundary ports for fast convergence.

Explore how multiple spanning tree selects root bridges and ports, explains designated and blocking ports, and traces traffic flow across switches in a hands-on lab.

Bundle multiple links into a single etherchannel port channel so spanning tree sees one link, while hash-based traffic distribution across the bundled interfaces can be configured as trunk or access.

Explore traffic distribution in a Cisco switch by hashing destination IP or source MAC to choose port-channel links, using LACP or Cisco proprietary methods, with trunked VLAN and port-channel setup.

Configure and troubleshoot EtherChannel on Cisco switches, using port channels for layer 2 and layer 3, understand desirable and auto modes, and explore port channel protocol control and common misconfigurations.

Explain how port channel load balancing distributes traffic using source MAC, destination MAC, or IP hashing, and how to adjust settings for reliable results across switches.