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I have a CAT5 cable that is connected between a laptop and an embedded device. I need to know if the embedded device is using 10Base-T or 100Base-T.

Is the Base-T info from each device (the laptop and embedded device) passed in the ethernet packets? i.e. Can I use Wireshark to gather the Base-T information? If so, how?

asked 09 Jul '15, 10:22

KTM's gravatar image

KTM
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accept rate: 100%

edited 09 Jul '15, 10:46


Is the Base-T info from each device (the laptop and embedded device) passed in the ethernet packets?

Not at the level at which packet capture mechanisms supply the packets - i.e., it's not a field in an Ethernet packet - so...

Can I use Wireshark to gather the Base-T information?

...no.

However, if this is a point-to-point Ethernet - i.e., you just have a single Ethernet cable between the two machines, with no hub or switch in between them - you might be able to find out from the operating system on the laptop what speed it's using, which would be the same speed as the speed of the device to which it's talking. What operating system is the laptop running?

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answered 09 Jul '15, 15:30

Guy%20Harris's gravatar image

Guy Harris ♦♦
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edited 09 Jul '15, 15:46

The laptop is running OS X. And, yes, I have a point-to-point connection with no hubs/switches in between the two devices.

(09 Jul '15, 15:50) KTM

Try opening a Terminal window and doing ifconfig -a and see what it reports for your Ethernet interface. If it's a laptop with a built-in Ethernet, your Ethernet interface will probably be en0, otherwise en0 will probably be a Wi-Fi interface and your Ethernet will be some other en interface.

(09 Jul '15, 19:43) Guy Harris ♦♦
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question asked: 09 Jul '15, 10:22

question was seen: 1,062 times

last updated: 09 Jul '15, 19:43

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