<\/DIV>\n
But if all you want to do is check for a MAC address (and return the associated IP addresses) on a given computer, well, that\u2019s easy:<\/P>
On Error Resume Next<\/p>\nstrComputer = “.”\nSet objWMIService = GetObject(“winmgmts:\\\\” & strComputer & “\\root\\cimv2”)<\/p>\n
Set colItems = objWMIService.ExecQuery _\n (“Select * from Win32_NetworkAdapterConfiguration Where MACAddress = ’99:99:99:AA:99:A9′”)<\/p>\n
For Each objItem in colItems\n For Each strIPAddress in objItem.IPAddress\n Wscript.Echo “IP Address: ” & strIPAddress\n Next\nNext\n<\/PRE>\n
As you can see, there\u2019s nothing fancy here at all. The script begins by connecting to the WMI service on the local computer (although we could just as easily connect to the WMI service on a remote computer). We then use this line of code to retrieve a collection of all the network adapters that have the MAC address 99:99:99:AA:99:A9:<\/P>
Set colItems = objWMIService.ExecQuery _\n (“Select * from Win32_NetworkAdapterConfiguration Where MACAddress = ’99:99:99:AA:99:A9′”)\n<\/PRE>\nAt this point all we have to do is walk through the collection and echo back the IP addresses associated with that network adapter. The key here – and a mistake many people make – is that we\u2019re echoing the IP addresses<\/I> (plural) for each network adapter. It\u2019s entirely possible for a single network adapter to have multiple IP addresses; because of that, the IPAddress<\/B> property stores values as an array. That means we need to set up a second For Each loop to walk through that<\/I> collection:<\/P>For Each strIPAddress in objItem.IPAddress\n Wscript.Echo “IP Address: ” & strIPAddress\nNext\n<\/PRE>\nBear in mind that we need to do this even if there\u2019s one (or even if there aren\u2019t any) IP address associated with the adapter.<\/P>\n
What if there aren\u2019t any<\/I> network adapters with that particular MAC address? Well, in this case you just won\u2019t get back any data. However, we could add a tiny bit of code that takes action based on the value of the collection\u2019s Count<\/B> property: if this value is 0, that means there are no items in the collection, and thus no network adapters with that MAC address. Here\u2019s a modified script that reports back the appropriate message if no such adapter can be found:<\/P>On Error Resume Next<\/p>\nstrComputer = “.”\nSet objWMIService = GetObject(“winmgmts:\\\\” & strComputer & “\\root\\cimv2”)<\/p>\n
Set colItems = objWMIService.ExecQuery _\n (“Select * from Win32_NetworkAdapterConfiguration Where MACAddress = ’99:99:99:AA:99:A9′”)<\/p>\n
If colItems.Count = 0 Then\n Wscript.Echo “There are no adapters with that MAC address.”\n Wscript.Quit\nEnd If<\/p>\n
For Each objItem in colItems\n For Each strIPAddress in objItem.IPAddress\n Wscript.Echo “IP Address: ” & strIPAddress\n Next\nNext\n<\/PRE>\n
And, just for the heck of it, here\u2019s a bonus script, one that simply reports back the names and MAC addresses for all the network adapters on a computer. Admittedly this is a script you could easily write yourself, but, hey, now you don\u2019t have to:<\/P>
strComputer = “.”\nSet objWMIService = GetObject(“winmgmts:\\\\” & strComputer & “\\root\\cimv2”)<\/p>\nSet colItems = objWMIService.ExecQuery _\n (“Select * from Win32_NetworkAdapter”)<\/p>\n
For Each objItem in colItems\n Wscript.Echo objItem.Name, objItem.MACAddress\nNext<\/PRE><\/p>\n","protected":false},"excerpt":{"rendered":"
Hey, Scripting Guy! How can I display the IP addresses associated with a given MAC address?— NK Hey, NK. Before we answer your question we should take a moment to answer a related question. People often ask us, \u201cIf I have a MAC address can I write a script that will tell me which computer […]<\/p>\n","protected":false},"author":595,"featured_media":87096,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[36,37,3,5],"class_list":["post-68113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scripting","tag-client-side-management","tag-networking","tag-scripting-guy","tag-vbscript"],"acf":[],"blog_post_summary":"
Hey, Scripting Guy! How can I display the IP addresses associated with a given MAC address?— NK Hey, NK. Before we answer your question we should take a moment to answer a related question. People often ask us, \u201cIf I have a MAC address can I write a script that will tell me which computer […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/68113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/users\/595"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/comments?post=68113"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/68113\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media\/87096"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media?parent=68113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/categories?post=68113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/tags?post=68113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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