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Three tables in network transmission, MAC Address table, ARP cache table, and routing table

A: MAC Address Table detailedWhen it comes to the MAC address table, you have to say how the switch works because the switch forwards the data frame based on the MAC address table. There is a table in the switch that records the c

MAC Address table, ARP cache table, and routing table

A: MAC Address Table detailedWhen it comes to the MAC address table, you have to say how the switch works because the switch forwards the data frame based on the MAC address table. There is a table in the switch that records the c

(reprinted) Three tables in network transmission, MAC Address table, ARP cache table, and routing table

Solemn declaration: original reproduced in http://dengqi.blog.51cto.com/5685776/1223132Salute to Good articles!!!A: MAC Address Table detailedWhen it comes to the MAC address table, you have to say how the switch works because the switch forwards the data frame based on the MAC

IP address mapping bind MAC address

1, the local area network by querying the other IP address can map the other MAC address to the host's Apr buffer table. Map host IP addresses to MacFirst, the shared LAN host is queried through the net viewSecond: Arbitrarily choose a computer name, forcing the use of IPv4 to obtain an IP address, ping with the ARP bu

Three tables in network transmission, including MAC address table, ARP cache table, and route table

I. Detailed description of the MAC address table Speaking of the MAC address table, you have to talk about the working principle of the switch, because the switch forwards data frames according to the MAC address table. There is a

Implementation code _php Tutorial for obtaining MAC Address (Windows/linux) for intranet users in PHP

Copy CodeThe code is as follows: function Ce_getmac () { if (Php_os = = ' WINNT ') { $return _array = Array (); $temp _array = Array (); $mac _addr = ""; @exec ("Arp-a", $return _array); foreach ($return _array as $value) { if (Strpos ($value, $_server["Http_client_ip")!== false Preg_match ("/(:?? [ 0-9a-f]{2}[:-]) {5}[0-9a-f]{2}/i ", $value, $temp _array)) { $mac _addr = $temp _array[0]; Break } } Return

Get the IP address for a MAC address in LAN

Get IP address via LAN MAC address[[email protected]cli]# Cat tmp.shfunction Get_all_arp_info (){Ip-s-S neigh flush all >/dev/nul For IP in ' seq 2 254 'DoPing 192.168.50. $ip-c1 >/dev/null Done}function From_mac_get_ip (){Get_all_arp_infoMac_addr=$1if [[-N ' ip neigh |grep $MAC _addr ']];thenIp_addr= ' IP neigh |grep

What is a MAC address? Mac Viewing method

MAC address is in the media access layer to use the address, popular point is the physical address of the network card, now the MAC address is generally used 6-byte 48bit (in the early and 2-byte 16bit of the

About switch Setup issues with IP-MAC address bindings

IP address and MAC address relationship: IP address is based on the current IPV4 standard specified, not subject to hardware limitations easier to remember the address, length 4 bytes. The MAC

About switch settings for IP-MAC Address binding

Note: Relationship between the IP address and the MAC address: the IP address is specified according to the current IPv4 standard and is easy to remember without hardware restrictions. The length is 4 bytes. The MAC address is the

Mac How to view native IP and MAC address

How does Mac view native IP and MAC addresses? Many users who just use Macs don't know how to view their native IP and MAC addresses. In fact, this is a little different from looking at the native IP address in the Windows system, so how do you view the IP address and the ph

How to view the physical address of the network card (MAC address)

1. In the lower-right corner of the taskbar, Click the Network icon, select Open Network and Sharing Center and choose change adapter settings as shown in the figure: 2. For the MAC address of the wired network card, please right-click "Local Connection" and select "Properties", while looking at the MAC address

GETMAC returns the media access control (MAC) address of all network adapters in the computer and the list of network protocols for each address _dos/bat

Returns the media access control (MAC) address of all network adapters in the computer and the list of network protocols for each address, either from the local area or back through the network. Grammar Getmac[.exe] [/s Computer [/u domain\user [/P Password]]] [/FO {table| List| CSV}] [/NH] [v] Parameters /s Computer Specifies the remote computer name or IP

tutorial on viewing the physical address (MAC address) of a network card in Windows 8/8.1

1, we right click on the bottom right corner of the " network " icon, and then click on the pop-up screen " Open Network and Sharing center " under " Change adapter Settings ", you can go to the diagram interface: 2, wired network card Now we right-click the " Local connection " and then open the menu click " Properties "; The MAC address of the wireless network card is also right click on " Wir

MAC address cloning and cracking sharing restrictions allow multiple computers to access the Internet

Author:Laocai At present, ISPs in many places use the MAC function, that is, to record the MAC address of a machine in your LAN to restrict the sharing of multiple computers. What is a MAC address? How can I cope with MAC Internet

Overview of MAC address Principle and Application

Everyone knows that in real life, each of us has our own ID number-ID card number. You can go to the police station to change your name, however, your ID card number cannot be changed as your name changes. In the online world, we often hear the concept of IP addresses. However, MAC addresses are rarely mentioned. We often only know IP addresses, while MAC addresses are the heroes behind the scenes. In our d

Android acquisition of the IP address and Mac physical address of the computer _android

Get native IP address Public String getlocalipaddress () { Wifimanager Wifimanager = (wifimanager) getsystemservice ( Android.content.Context.WIFI_SERVICE); Wifiinfo wifiinfo = Wifimanager.getconnectioninfo (); int ipaddress = wifiinfo.getipaddress (); try {return inetaddress.getbyname (String.Format ("%d.%d.%d.%d" ), (IPAddress 0xFF), (IPAddress >> 8 0xFF), (IPAddress >> 0xFF), (IPAddress >> 0xFF)). toString (); catch (Unknownhostexcepti

Flight Tower (Fortinet) firewall configuration-bind MAC address (interface-based)

 IP/MAC Binding RequirementsThe MAC address and IP address binding, can prevent IP address spoofing network attack, IP spoofing attack attempts to use a trusted computer's IP address from different computers to connect and through

Switch Security (2)-MAC address flooding

Mac layer Attack rumor address floodA common two-layer attack or switch attack is a Mac flood, with an intruder using a large number of invalid source MAC addresses, which can cause the switch's cam table to overflow, because the switch cannot find the port corresponding to the destination

Get the NIC MAC address and IP address (vb.net)

IP address Private Sub button1_click (ByVal sender as System.Object, ByVal e as System.EventArgs) Handles Button1.Click Dim Wmi as New System.Management.ManagementObjectSearcher ("SELECT * from Win32_NetworkAdapterConfiguration") TextBox1.Text = "" For each wmiobj as ManagementObject in Wmi.get If CBool (Wmiobj ("ipenabled")) Then TextBox1.Text + + IP (" Wmiobj (" IPAddress ") (0) ") | MAC (" Wmio

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