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  Objectives Part 1: Configure and Build the Network Examine the Switch MAC Address Table in Part 2 Context / Scenario A Layer 2 LAN switch's primary function is to transmit Ethernet frames to host devices on the local network. The switch keeps track of all visible host MAC addresses on the network and maps them to its own Ethernet switch ports. This is referred to as creating the MAC address database. When a switch gets a frame from a PC, the source and destination MAC addresses of the frame are examined. The MAC address of the source is saved and mapped to the switch port from which it originated. The target MAC address is then retrieved from the MAC address database. If the destination MAC address is known, the frame is forwarded out of the switch port that corresponds to that MAC address. If the MAC address of the frame is unknown, it is broadcast from all switch ports except the one from which it originated. It is critical to watch and understand how switches operate and how t...

 Objectives Configure Devices and Verify Connectivity in Part 1 Part 2: Display, Describe, and Analyze MAC Addresses for Ethernet Context / Scenario A Layer 2 MAC address uniquely identifies each device on an Ethernet LAN. The manufacturer assigns and stores this address in the NIC's firmware. This lab will investigate and evaluate the components of a MAC address, as well as how to locate this information on a switch or a PC. You will connect the equipment in the topology depicted. The switch and PC will be configured to match the addressing table. You will validate your settings by attempting to connect to the network. After configuring the devices and verifying network connection, you'll use a variety of commands to get information from the devices in order to answer questions about your network equipment. Cisco Catalyst 2960 switches running Cisco IOS Release 15.2(2) were utilised (lanbasek9 image). Other Cisco switches and Cisco IOS versions are also supported. Depending on...

 Objectives Part 1: Analyze the Ethernet II Frame's Header Fields Part 2: Capturing and Analyzing Ethernet Frames Using Wireshark Context / Scenario When protocols at the upper layers communicate, data flows down the Open Systems Interconnection (OSI) layers and is encapsulated in a Layer 2 frame. The frame composition is determined by the mode of media access. For instance, if the upper layer protocols are TCP and IP and the media access layer protocol is Ethernet, the Layer 2 frame encapsulation will be Ethernet II. This is standard behaviour in a LAN environment. It is beneficial to analyse frame header information when learning about Layer 2 concepts. You will review the fields contained in an Ethernet II frame in the first section of this lab. In Part 2, you'll capture and analyse Ethernet II frame header fields for local and remote traffic using Wireshark. Note from the instructor: This lab assumes the student is using a personal computer with internet access. Additionall...