mac network diagnostics

' =======================================================‘'-----------2014.11.10 by Zhang.xh qq:857372828‘' =========================================================Dim STR0,STR1,STR2,STR3StrComputer = "."Set objWMIService = GetObject ("winmgmts:\\" StrComputer "\root\cimv2")STR1 = GetIP ()STR2 = Getmac ()STR3 = GetHostName ()MsgBox "IP:" str1 vbCrLf "MAC:" STR2, "Computer name:" str3Function GetIP ()GetIP = ""Dim ipconfig,ipconfigsetSet Ipconfigse

control information in the specified format to the physical layer, when the data is received, the MAC protocol first to determine the input information and whether there is a transmission error, if there is no error, The control information is sent to the LLC layer. The layer protocol is an Ethernet Mac defined by the IEEE-802.3 Ethernet standard. The latest Mac

to the physical layer, when the data is received, the MAC protocol first to determine the input information and whether there is a transmission error, if there is no error, The control information is sent to the LLC layer. The layer protocol is an Ethernet Mac defined by the IEEE-802.3 Ethernet standard. The latest Mac supports both 10Mbps and 100Mbps speeds of

Tags: source IP source mac destination IP destination macSource IP Source Mac destination IP destination mac, changes throughout the network.Local network:The 1.vlan+mac is addressed in a way that does not cross the gateway. The source IP source mac and destination IP

Mac connection Wi-Fi network does not smooth solution: Apple has a wireless diagnostics tool on its Mac device Wireless diagnostics can help Mac users detect some common WiFi connection problems, and monitor the WiFi connec

, AMP;IFR) 0) {perror ("IOCTL"); return-1; } memcpy (sin, AMP;IFR.IFR_ADDR,sizeof(sin)); sprintf (IP,"%s", Inet_ntoa (SIN.SIN_ADDR)); return 0;}intGetmac (Char*mac,Char*name) { structIfreq Ifreq; intsock; if(Sock=socket (Af_inet,sock_stream,0)) 0) {perror ("Socket"); return 2; } strcpy (Ifreq.ifr_name, name); if(IOCTL (SOCK,SIOCGIFHWADDR,AMP;IFREQ) 0) {perror ("IOCTL"); return 3; } sprintf (Mac,"%

Linux Network Programming-original socket instance: Packet Analysis of MAC header, linux Network Programming We learned through "Linux Network Programming-original socket programming" that we can get the data packets at the link layer through the original socket and recvfrom ().What we receiveWhat is the length of link

C # obtain the MAC address Method 1: Use managementclass String Strmac = "";Managementclass MC = new managementclass ("win32_networkadapterconfiguration ");Managementobjectcollection MOC = mc. getinstances ();Foreach (managementobject MOC in MoC){ If (MOC ["ipenabled"]. tostring () = "true "){Strmac = MOC ["macaddress"]. tostring ();}} Method 2: Use networkinterface String Strmac = "";Networkinterface [] fnetworkinterfaces = ne

communication is a unicast transmission of data frames, Host B and host C communication as described above, so the MAC address table of switch 2 records the MAC address of host A and Host B corresponds to the interface F 0/1.Summary: From the above two pictures can be seen, the switch has the ability to dynamically learn the source MAC address, and one interface

MAC address table of switch 2 records the MAC address of host A and Host B corresponds to the interface F 0/1. Summary: From the above two pictures can be seen, the switch has the ability to dynamically learn the source MAC address, and one interface of the switch can correspond to multiple MAC addresses, but a

Network settings of Parallel Virtual Machine Fedora 14 under MAC-"shared network" SettingsRecently, I started to switch to the MAC platform, but I should say there are more surprises. As a program on a Linux platform, virtual machines are indispensable. Parallel on the MAC p

There are many ways to obtain the MAC address of an Eni, such as NETBIOS, SNMP, and getadaptersinfo. After testing, it is found that the NetBIOS method cannot obtain the Mac when the network cable is pulled out, while the SNMP method sometimes gets the MAC of multiple duplicate net