ARP

  • [ACSA Training #23] Frame Transmission Process

    Previously, while examining representative Layer 2 technologies such as VLANs and 802.1Q, we also mentioned frames. In a previous post, I also explained Ethernet frames, which correspond to Layer 2 in the OSI model. Therefore, today, I would like to examine how these frames operate during Layer 2 communication using actual examples. First, assuming the same VLAN, several…

  • [ACSA Education #22] Forwarding Table

    Layer 2 switches transmit data based on MAC addresses. To do this, the switch uses a MAC address table. When a device connected to the switch sends a frame, the table is automatically created based on the MAC address of the source frame. So, how does it work? MAC Address Table: When power is turned on to Switch SW1, the MAC address table is initially empty...