• PowerCert Animated Videos: https://www.youtube.com/channel/UCJQJ4GjTiq5lmn8czf8oo0Q/videos

• https://www.youtube.com/watch?v=NI0g0gwzRpY
  • note, the onedrive/outlook acc should not have 2-step authenication
• step:
  • login in onedrive https://onedrive.live.com to check your “cid” number in your url
  • then, in your computer, map network drive, and put address as https://d.docs.live.net/YOUR_CID_NUMER
  • then, when pop up the login, just type in login as like in browser

• Normally, in a local network setup like Home WiFi network, it gives every device a local IP address, like 192.168.1.xxx;
• Problem: If your PC are in 169.254.xxx.xxx situation (check with “ipconfig” command in cmd app) during network setup, you can't access your router at its default 192.168.1.1 address in internet browser
• Solution: in order to access 192.168.1.1 address, you may need to manually set your PC IP to like 192.168.1.xxx; here is the steps:
  1. Open Control Panel > Network and Internet > Network Connections to see the actual Ethernet port/WIFI connection that you are using
  2. Right click on the your current network connection icon, choose property > check “internet Protocol Version 4 (TCP/IPv4) Property
  3. Instead of letting IPv4 auto get your IP, you use manual entered IP address: 192.168.1.x (e.g. 192.168.1.5), subnet mask: 255.255.255.0; empty default gateway
  4. now you should be able to access your Router by either Ethernet or WIFI at 192.168.1.1

• press and hold reset button at router back for 5+ seconds to reset router, use Wifi or Ethernet to access 192.168.1.1 page in internet browser. (search internet for default password for your router model)

• make sure the computer which is sharing the folder has a username with password,
• then, in other computer, map that network driver with "\\PC_Name\path_to_the_fodler", with credential as “PC_Name\user_name” and “Password”
• additional note: make sure setting the folder permission with “full control” or “change” if you want end user create or modify on that folder, as default one is read only.

• crossover wiring type ethernet cable is a part of history already, nowadays all ethernet adapter ports support Auto-MDIX (automatic medium-dependent interface crossover)
  • which means: the port interface automatically detects the required cable connection type (straight through or crossover) and configures the connection appropriately
  • wiki ref: https://en.wikipedia.org/wiki/Medium-dependent_interface

• Thus, you just need a cat6 cable or better, (cat5 is part of history as well and not available commonly) to connect 2 computer ethernet port directly.

• The Direct Connection Ethernet adapter setup (Note: if win10 interface hard to set ip, then just commandline admin mode faster)
  • on that direct Network Connection property, setup IP4 connection IP manually, (cmd “Lighting” is my ethernet adapter name when you cmd ipconfig)
    • 1.1.1.1 on one computer with mask 255.255.255.0

      netsh interface ip set address name="Lighting" static 1.1.1.1 255.255.255.0 1.1.1.1

    • 1.1.1.2 on other computer with mask 255.255.255.0

      netsh interface ip set address name="Lighting" static 1.1.1.2 255.255.255.0 1.1.1.1

    • 1.1.1.3 on other computer with mask 255.255.255.0

      netsh interface ip set address name="Lighting" static 1.1.1.3 255.255.255.0 1.1.1.1

    • and map network drive with that direct ip address like, access \\1.1.1.1\myShareFolderName on 1.1.1.2 computer
  • For win10 auto change ip setting after restart, you need to go Windows 10 setting > Network > that Adapter: IP settings set
    • ip assignment: manual, ipv4: 1.1.1.1; subnet length: 24; gateway: 1.1.1.0
  • if auto configure still kick back, go regedit admin right: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{GUID}, you can check your ip setting to locate which guid is the one you want,
    • then, add a DWORD “IPAutoconfigurationEnabled”, value as 0

• 10GbE speed = 1250MB/s, and setup is similar as 1GbE setup, but the hardware needs to meet the spec to achieve it.
• First, computer needs to have a 10Gb port.
  • there are same Ethernet cable based ports network adapters and cable
  • there are also copper wire cable based ports and cable (sfp+) (which is older than those new Ethernet port option)
  • there are also other solution, which require driver setup properly and configured properly

• Cheap option
  • sfp+ copper cable and sfp+ network adapter (normally around 60SGD in 2nd hand, cable around 3 meter most time)
  • old generation of intel X540-T1,T2 10Gb Ethernet adapter (90sgd in 2nd hand) and standard cat6 Ethernet cable (6sgd for 5meter new)
  • new generation of intel X550 10Gb Ethernet adapter (???sgd in 2nd hand) and standard cat6 Ethernet cable
  • brand new Asus XG-C100C 10Gb Ethernet adaper (99USD new)
    • https://www.youtube.com/watch?v=8aqzd_jNj_s

• 2.5G ethernet as inbetween solution of 1G and 10G:
  • https://www.tp-link.com/sg/business-networking/unmanaged-switch/tl-sg108-m2/v1/
• 10G option:
  • https://www.tp-link.com/sg/business-networking/unmanaged-switch/tl-sx1008/v1/
  • full list of 10gb netgear switch: http://info.netgear.com/NA_10g
  • cheap list of 10gb switch: https://nascompares.com/2018/01/19/cheapest-10gbe-switches/
  • cheap list of 10gb nic: https://nascompares.com/2017/12/14/cheapest-10gb-1-port-pci-express-network-cards-rj45/
• https://planetechusa.com/blog/ethernet-different-ethernet-categories-cat3-vs-cat5e-vs-cat6-vs-cat6a-vs-cat7-vs-cat8/
• https://www.youtube.com/watch?v=8aqzd_jNj_s
• Understanding Switches: https://www.youtube.com/watch?v=9yYqNqTNnqI
• Networkwork optics overview:
  • 1GB SFP - 100GB Optics: https://www.youtube.com/watch?v=7KGFWGbdfps
• https://item.jd.com/28030017748.html

• Chinese Name: 万兆以太网
  • Intel X540-T1, X540AT2 (link, link)

• Hub, Switch, & Router: https://www.youtube.com/watch?v=1z0ULvg_pW8
  • Hub sends signal to all ports
  • Switch send signal from one to another ports
  • Router connects between networks (inter-network), while hub and switch create a network

• switch and networking: https://www.youtube.com/watch?v=_VRToy-9SD0

• ports, router, ips: https://www.youtube.com/watch?v=2G1ueMDgwxw

Ports

• port numbers are often associated with certain protocol, application, type of usage
  • like port 80 for http, 20,21 for ftp, 443 for https
• port number are in range of 0-65535

• router setup example for dns database
  • https://www.linksys.com/ca/support-article?articleNum=164490
  • example spec: https://www.hachi.tech/product/0745883632411/Linksys-LRT224-Dual-WAN-Business-Gigabit-VPN-Router
• windows dns check command

  ipconfig /all
  nslookup

• Samsung App store, install SmartThings.