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You can't connect them directly together, they are not electrically compatible, simply will not work together.
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You can't connect them directly together, they are not electrically compatible, simply will not work together.

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Is there a way to loop back the RJ45 port similar to the way a RS232 port is looped back for testing? In other words, can I somehow send data and receive it back on the same LAN port of the same laptop? As I said above I need a pure .Net approach.<br />
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Thanks for the help.<br />
<br />

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Is there a way to loop back the RJ45 port similar to the way a RS232 port is looped back for testing? In other words, can I somehow send data and receive it back on the same LAN port of the same laptop? As I said above I need a pure .Net approach.

Thanks for the help.



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I want to test both the LAN port and the DB9 Com1 port of the same laptop using purely VB.Net tools. If I were to get a RJ45 to DB9 adapter, how could I open a communication channel between the two?
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I want to test both the LAN port and the DB9 Com1 port of the same laptop using purely VB.Net tools. If I were to get a RJ45 to DB9 adapter, how could I open a communication channel between the two?

LAN/COM1 Port Testing

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

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.NET Programming

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.