Trogers - UCSC Web100 based Network Diagnostic Tool Question

[YARDofSTUF]

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

Got that for the test, is it telling me I should set my PC to half duplex?

[trogers]

No. What the test says is that there is a mismatch of duplex setting, probably the NIC is operating at half-duplex and the router or modem at full-duplex. Speed will fall as errors in data transfer occur. This sometimes happen when the auto-sensing fails to 'sense' the mode of the other end of the link.

Here is a link that explains this problem rather clearly and suggest solutions:

http://www.cites.uiuc.edu/network/autosense.html#consequences

[YARDofSTUF]

Thanks

Nic was at full, if I go to half duplex 10mbps the message goes away, but I can live with that.

Speeds are great anyway.

[trogers]

Nic was at full, if I go to half duplex 10mbps the message goes away, but I can live with that.


Below is the message we would like to see in the Network Diagnostic test - that our connection is in full-duplex state.


Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
Good network cable(s) found
Normal duplex operation found.


When you set your Nic to 10 Mbps half-duplex, ensure you do not get the message below. No duplex mismatch but your connection is at half-duplex state.


Cable modem/DSL/T1 link found.
Link set to Half Duplex mode
Good network cable(s) found
Normal duplex operation found.
​

[YARDofSTUF]

Dont think my last post was very clear lol

I set it back to full duplex 100mbps, it gives me the duplex mismatch but at full or half duplex 10mbps it slows down the speedtests and I also wouldnt be able to transfer at 100mbps across the lan.

Since I can transfer from pc to pc at 100mbps I guess its just not reading something of mine right.