Using the macvendorscom page to lookup the vendor for a MAC address Now you can use this mac address and use any page to lookup the vendor. That will populate the local ARP cache with the corresponding mac address (here: cc:ce:1e:b4:40:01). First, you ping the desired IP address (in this case 192.168.178.1). The example above illustrates how it works. Simply ping the IP address and then run an ARP command to read the current ARP cache. When the device’s IP address resides within the same network segment as the discovery computer, then it is not difficult to obtain the device’s mac address. However, it is not always trivial to determine the mac address for a given IP address. So it is essential to determine for as many devices the corresponding mac address! Without the mac address, the switch port assignment for devices cannot be done! The prerequisite is that you also have the corresponding mac address for a device. ) can be used to determine what device is connected to which switch port. Each switch maintains an internal mapping table that maps mac addresses to switch ports. Switches are network layer 2 devices and thus work with mac addresses. Mac addresses are essential for creating a proper network switch topology. However, with the mac address, we can at least resolve the manufacturer. Whenever JDisc Discovery has no access credentials or the device does not expose any standard protocol, then the device appeared as an unidentified device. This enables us to identify the manufacturer.
We have integrated the mapping in our product. You can also download the mac address to manufacturer database from various web pages. There are a lot of web pages to identify the manufacturer based on the mac address. Usually, the first three octets of a mac address identify the vendor.
Derive the manufacturer from the mac address.There are two important reasons to get the mac addresses for as many devices as possible: Furthermore, it is not that easy to obtain mac addresses for each and every device. That doesn’t sound too spectacular, does it? However, this is a pretty important feature and I am going to explain why. We will be able to get MAC addresses from devices in remote networks.
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