{"id":22849,"date":"2022-09-14T11:34:05","date_gmt":"2022-09-14T04:34:05","guid":{"rendered":"\/en\/?post_type=ht_kb&#038;p=22849"},"modified":"2022-09-14T11:34:10","modified_gmt":"2022-09-14T04:34:10","slug":"22849","status":"publish","type":"ht_kb","link":"\/en\/kb\/22849\/","title":{"rendered":"Basic terms of a network"},"content":{"rendered":"<div><span style=\"font-size: 12pt;\">Here are some terms you should know before implementing a network model:<\/span><\/div>\n<blockquote>\n<div><span style=\"font-size: 12pt;\"><a href=\"#1\">1. Modem, Router, AccessPoint, LAN port, WAN port, MAC address<\/a><a href=\"https:\/\/gettingstarted.cukcuk.com\/en\/mot_so_khai_niemthuat_ngu_co_ban_ve_mang.htm#T1\"><br \/>\n<\/a><a href=\"#2\">2. Wireless signal, number of connected devices, network cable<\/a><\/span><\/div>\n<div><span style=\"font-size: 12pt;\"><a href=\"#3\">3. Wifi roaming, Network channel, how to implement wifi roaming and network channel<\/a><a href=\"http:\/\/help2014.misa.local\/cukcukv3\/mot_so_khai_niemthuat_ngu_co_ban_ve_mang.htm\"><br \/>\n<\/a><\/span><\/div>\n<\/blockquote>\n<div>\n<hr \/>\n<p><span style=\"font-size: 12pt;\"><strong><a name=\"1\"><\/a>1. Modem, Router, AccessPoint, LAN port, WAN port, MAC address<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\"><strong>Modem:<\/strong>\u00a0a device converts from ADSL signal (hi-speed transmission) or optical cable to Internet connection.\u00a0<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>Router:<\/strong>\u00a0a traffic directing device shares Internet to all devices in the restaurant. When a router receives Internet connection from Modem via WAN port, the router will automatically generate an IP which is different from the Modem IP.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>Access Point:<\/strong>\u00a0a device receives Internet from a router and shares Internet to other devices. Access Point does not assign IP to the devices connected to it. Access point expands the connection area by adding more points. The access points usually have antenna.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>LAN port:<\/strong>\u00a0allows a computer to connect to a network using a wired connection using a RJ-45 connector, usually in yellow.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>WAN port:\u00a0<\/strong>create a separate network, assign IP as per Default Gateway. If you want to use WAN port, you need to go to Router configuration page, go to DHCP Enable to enable it.\u00a0<\/span><\/li>\n<\/ul>\n<\/div>\n<blockquote>\n<div><span style=\"font-size: 12pt;\"><em>Note: Do not plug Internet cable to LAN port + Enable DHCP\u00a0plug Internet cable to\u00a0WAN port + Disable DHCP in order to avoid continuous dropouts (because Router IP conflicts with Modem IP)<br \/>\n<\/em><\/span><\/div>\n<\/blockquote>\n<blockquote><p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/3-12-181-1.png\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<blockquote>\n<div>\n<div><span style=\"font-size: 12pt;\">E.g.: If IP of Modem is 192.168.1.1, fix IP Router Wifi as below:<\/span><\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li><span style=\"font-size: 12pt;\">If you want to set Router as network for guests and staff separately, set IP of Router TP Link as 192.168.2.1 (different from Modem IP 192.168.1.1) and connect Internet from Modem to WAN port of the Router + enable DHCP.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">If you want to set Router as access points receiving Internet connection from Modem and transmitting it to other devices (do not assign IP), connect Internet from Modem to LAN port of the Router and disableDHCP.<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/blockquote>\n<blockquote>\n<div>\n<div>\n<div><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/3-12-181-4.png\" alt=\"\" \/><\/span><\/div>\n<\/div>\n<\/div>\n<\/blockquote>\n<div>\n<div>\n<ul>\n<li><span style=\"font-size: 12pt;\"><strong>MAC address:<\/strong>\u00a0is a single address assigned to each hardward by the manufacturer. Access points will recognize devices via MAC address.<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<blockquote>\n<div><span style=\"font-size: 12pt;\">You can assign IP address to each device according to MAC address. Then the transmitting device will give priority to this device. View instruction\u00a0<a href=\"https:\/\/gettingstarted.cukcuk.com\/en\/thiet_lap_dai_ip_tren_cac_bo_phat_wifi_cung_dai_ip_voi_router.htm\">here<\/a>.<\/span><\/div>\n<\/blockquote>\n<div>\n<div>\n<p><span style=\"font-size: 12pt;\"><strong><a name=\"2\"><\/a>2.\u00a0Wireless signal, number of connected devices, network cable<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\"><strong>Wireless signal:\u00a0<\/strong>uses radio wave to transmit data in the network system. Because it is the radio wave, it is subject to interference from obstructions or other radio waves.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>Wireless signal coverage:\u00a0<\/strong>affects the wireless access speed. If the coverage is strong, the access speed is high and vice versa.h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea1m vi truy c\u1eadp wifi, n\u1ebfu \u0111\u1ed9 ph\u1ee7 s\u00f3ng l\u1edbn th\u00ec ph\u1ea1m v\u1ecb truy c\u1eadp l\u1edbn, n\u1ebfu \u0111\u1ed9 ph\u1ee7 s\u00f3ng nh\u1ecf th\u00ec ph\u1ea1m vi truy c\u1eadp nh\u1ecf. The coverage is strong or poor depending on capacity, antenna height, obstructions, etc.<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<blockquote>\n<div>\n<div>\n<div>\n<p><span style=\"font-size: 12pt;\">Average wireless coverage is 15m. Access points in the restaurant should be located properly so that all devices in the restaurant can get connected.\u00a0<\/span><\/p>\n<blockquote><p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/checklist-wifi-0001.jpg\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<p><span style=\"font-size: 12pt;\"><strong>Note:<\/strong>\u00a0The coverage is affected by obstructions (wall, iron door, other waves) =&gt; attenuate Wireless signal.\u00a0<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">When the wireless signal is block by the wall, it will be attenuated partially. If the wall is very thick, there is even no signal.<\/span><\/li>\n<\/ul>\n<blockquote><p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/checklist-wifi-0002.png\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<ul>\n<li><span style=\"font-size: 12pt;\">When the wireless signal goes through special structure, it will be attenuated or even lost.<\/span><\/li>\n<\/ul>\n<blockquote><p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/checklist-wifi-0003.png\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<ul>\n<li><span style=\"font-size: 12pt;\">If there are many signalling devices in the house, they will affect the wireless signal directly. It is recommended to locate the access point in an open area with no signalling devices.<\/span><\/li>\n<\/ul>\n<blockquote><p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/checklist-wifi-0004.png\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<p><span style=\"font-size: 12pt;\">If the restaurant has 2 access points or more, you need to check their distance. The minimum distance between two access points is 10m.<\/span><\/p>\n<blockquote><p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/checklist-wifi-0005.jpg\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<p><span style=\"font-size: 12pt;\"><em>\u00a0 \u00a0 \u00a0 Location B will have poor signal strength because in the middle of 2 waves<\/em><\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/blockquote>\n<div>\n<div>\n<div>\n<ul>\n<li><span style=\"font-size: 12pt;\"><strong>Number of connected devices:\u00a0<\/strong>Number of connected devices affects the Internet connection of the devices. Each access point allows a certain number of connected devices. In case of exceeding this number, devices cannot get access to Internet.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>Network cable:\u00a0<\/strong>For the strongest signal, the length of the network cable should be &lt; 90 m. If the network cable is longer than the recommended length, signal will be very poor.<\/span><\/li>\n<\/ul>\n<div>\n<p><span style=\"font-size: 12pt;\"><strong><a name=\"3\"><\/a>3. \u00a0Wifi roaming, Network channel, how to implement wifi roaming and network channel<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\"><strong>Roaming<\/strong>\u00a0is a a process ensuring the client&#8217;s wifi connection (laptop, smart phone, tablet) when it moves from this access point to the other access point. When you move around multiple access points, the connection must be configured on the new AP. Therefore, any of your data which is being sent before roaming will be resent from the previous AP to the new AP. This ensures that sending data during and after roaming is not lost. The interval is not much. Simply speaking, wireless roaming is when a wireless client (station) moves aournd in a area with multiple acess points, it may automatically switch to another AP which has better signal strength..<\/span><\/li>\n<li><span style=\"font-size: 12pt;\"><strong>Network channel:\u00a0<\/strong>In the restaurants, the network channel usually uses 2.4 GHz band (802.11b\/g standard). 14 channels are designated in the 2.4 GHz range, spaced 22MHz from each other so that the channels are overlapping. Two access points in the same channel will have interference. Therefore, Channel 1, 6, 11 are commonly used.<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<blockquote>\n<div>\n<div>\n<div>\n<div>\n<div><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/A0907_137b.jpg\" alt=\"\" \/><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/blockquote>\n<blockquote>\n<div><span style=\"font-size: 12pt;\">Currently, some big restaurants equip with high quality modem, supporting 2.4GHz and 5 Ghz network. 5 GHz network has better transmission quality, using all channels from 8 to 23. However, the coverage is narrower and limits the connected devices &#8211; Old devices usually cannot get connected to this network.<\/span><\/div>\n<\/blockquote>\n<div>\n<div>\n<div>\n<div>\n<ul>\n<li><span style=\"font-size: 12pt;\">To roam for the network system in the restaurant, you need to set Access Points to\u00a0<strong>the same standard, the same wifi name<\/strong>\u00a0(SSID),\u00a0<strong>the same password<\/strong>\u00a0and\u00a0<strong>different channel<\/strong>.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">Depending on the reality of each restaurant, you can roam wifi in either of these ways:<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><span style=\"font-size: 12pt;\">Roaming for the restaurants which are divided into multiple areas\/floors:<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<blockquote>\n<blockquote>\n<div>\n<p><span style=\"font-size: 12pt;\">E.g.: The restaurant has 3 floors, each floor has 1 AP, set as follows:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">Set APs with the same name, same password.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">Set AP in floor 1 as channel 1, AP in floor 2 Channel 6, AP in floor 3 channel 11.<\/span><\/li>\n<\/ul>\n<\/div>\n<\/blockquote>\n<\/blockquote>\n<blockquote>\n<blockquote>\n<blockquote>\n<div>\n<div>\n<div>\n<div>\n<div><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/3-12-18-2.jpg\" alt=\"\" \/><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/blockquote>\n<\/blockquote>\n<\/blockquote>\n<blockquote>\n<blockquote>\n<div><\/div>\n<\/blockquote>\n<\/blockquote>\n<div>\n<div>\n<div>\n<div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><span style=\"font-size: 12pt;\">Roaming for the restaurants which are divided into multiple areas in 1 floor:<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<blockquote>\n<blockquote>\n<div>\n<div>\n<div>\n<div>\n<div>\n<p><span style=\"font-size: 12pt;\">E.g: The restaurant has 1 floor and is spacious, divided into 6 areas. Each area has 1 AP, set as follows:\u00a0<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">Set APs with the same name and same password.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">Set channel for APs: Area 1, 3, 5 channel 1, Area 2, 4, 6 channel 6.<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/blockquote>\n<\/blockquote>\n<blockquote>\n<blockquote>\n<blockquote>\n<div><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/3-12-18-3.jpg\" alt=\"\" \/><\/span><\/div>\n<\/blockquote>\n<\/blockquote>\n<\/blockquote>\n<blockquote>\n<blockquote><p><span style=\"font-size: 12pt;\">*\/ To set channel for AP TP Link, visit its website. In\u00a0<strong>Wireless settings,\u00a0<\/strong>select channel for each AP.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"><img decoding=\"async\" src=\"https:\/\/gettingstarted.cukcuk.com\/en\/images\/Screenshot_20181203-175946.png\" alt=\"\" \/><\/span><\/p><\/blockquote>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Here are some terms you should know before implementing a network model: 1. Modem, Router, AccessPoint, LAN port, WAN port, MAC address 2. Wireless signal, number of connected devices, network cable 3. Wifi roaming, Network channel, how to implement wifi roaming and network channel 1. Modem, Router, AccessPoint, LAN port,&#8230;<\/p>\n","protected":false},"author":111,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"ht-kb-category":[3504],"ht-kb-tag":[],"class_list":["post-22849","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-5-frequently-asked-questions"],"_links":{"self":[{"href":"\/en\/wp-json\/wp\/v2\/ht-kb\/22849","targetHints":{"allow":["GET"]}}],"collection":[{"href":"\/en\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"\/en\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"\/en\/wp-json\/wp\/v2\/users\/111"}],"replies":[{"embeddable":true,"href":"\/en\/wp-json\/wp\/v2\/comments?post=22849"}],"version-history":[{"count":2,"href":"\/en\/wp-json\/wp\/v2\/ht-kb\/22849\/revisions"}],"predecessor-version":[{"id":22851,"href":"\/en\/wp-json\/wp\/v2\/ht-kb\/22849\/revisions\/22851"}],"wp:attachment":[{"href":"\/en\/wp-json\/wp\/v2\/media?parent=22849"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"\/en\/wp-json\/wp\/v2\/ht-kb-category?post=22849"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"\/en\/wp-json\/wp\/v2\/ht-kb-tag?post=22849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}