Network Engineering

JANUARY 23, 2025

have a Ethernet to typec device that let me connect to the router without password.It is fine if the lan port is opened but when the lan port is off it doesn't open router setup page? I have a mobile phone (Realme c55) which support otg.I

LAN 52

LAN Routers Port Ethernet 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. Lets discuss the TCP SEQ and Port numbers in this article. These applications are identified using the port numbers.

Port 52

Port TCP Ethernet LAN 52

The Network DNA

JULY 16, 2024

To do that it builds the Ethernet Frame and puts its MAC address as the Source MAC address (SMAC) and layer 2 broadcast address (ff:ff:ff:ff:ff:ff). A switch forwards the broadcast out all the ports in same VLAN (except the port where broadcast was received). PC-2 now creates an Ethernet frame to respond to the ARP.

Protocol 98

Protocol Ethernet IP Address LAN 98

The Network DNA

JUNE 24, 2024

This table is populated automatically when a switch receives a frame on a port. As a frame is received on a port, its source MAC address is noted. The switch receives the frame from PC-1 that contains the MAC address 80::01 on port 1. Port 1 is configured as a member of VLAN-11. Then PC-1 wants to communicate with PC-2.

Ethernet 52

Ethernet Port LAN Protocol 52

The Network DNA

JUNE 17, 2024

Lets say HTTP uses port 80 to identify the application at PC-2, PC-1 chooses Port 80 as the destination port and selects a random port 36000 as the source port. PC-1 and PC-2 both have received and acknowledged a sequence of packets from one another. Now actual data transfer happens. Continue Reading.

TCP 52

TCP Ethernet Port LAN 52