The Network DNA

JULY 16, 2024

CCNA: Address Resolution Protocol (ARP) In this article, we will talk about ARP that maps the layer 3 address to the layer 2 MAC address. This is similar to Address Resolution Protocol, which maps layer 3 IP addresses to the layer MAC addresses. PC-2 now creates an Ethernet frame to respond to the ARP. IP address.

Protocol 98

Protocol Ethernet IP Address LAN 98

The Network DNA

JULY 31, 2024

An administrator configures default gateway configuration manually while configuring the system on the LAN or it can be configured automatically using the DHCP protocol. This packet is encapsulated in Ethernet frame and using the ARP entries on the Host A it forwards the frame to the default gateway on the network.

IP Address 98

IP Address Ethernet Routers Gateway 98

The Network DNA

JUNE 11, 2024

CCNA: Ethernet Frame Today lets talk about the Ethernet Frame and its different fields. Understanding the Ethernet Frame and fields helps to understand the communication between systems and troubleshooting when things are not in place. A typical Ethernet frame looks like the one in Figure 1.

Ethernet 40

Ethernet LAN TCP Protocol 40

The Network DNA

JANUARY 26, 2025

CCNA RnS Article #28: Why Spanning Tree Protocol? CCNA RnS Article #32: Influencing STP CCNA RnS Article #31: STP Behavior CCNA RnS Article #30: STP: Under the Hood CCNA RnS Article #29: What STP Does?

Ethernet 59

Ethernet LAN Protocol TCP 59

The Network DNA

JUNE 4, 2024

CCNA: TCP/IP Stack TCP/IP Stack is the most widely used protocol stack. TCP/IP stack is a conceptual model consisting of network communication protocols. TCP/IP networks use TCP or UDP protocol at this layer. IPv4 and IPv6 are the protocols used at this layer. Ethernet and Wi-Fi are commonly used protocols on this layer.

TCP 52

TCP Ethernet Protocol LAN 52

The Network DNA

JUNE 19, 2024

CCNA: TCP Sequence & Port Number This article can be read as the second part of the previous article CCNA: 3-Way Handshake where we discussed what makes TCP a reliable protocol for transmitting information. CCNA RnS Article #28: Why Spanning Tree Protocol? Lets discuss the TCP SEQ and Port numbers in this article.

Port 52

Port TCP Ethernet LAN 52

The Network DNA

JUNE 24, 2024

CCNA RnS Article #28: Why Spanning Tree Protocol? CCNA RnS Article #32: Influencing STP CCNA RnS Article #31: STP Behavior CCNA RnS Article #30: STP: Under the Hood CCNA RnS Article #29: What STP Does?

Ethernet 52

Ethernet Port LAN Protocol 52