in Summit X460G2 24 ports, does not link in the last 4 ports copper a device that negotiates to 10 HD. Why do not you link to those ports?

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Alberto Lopez

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Posted 6 months ago

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David Coglianese, Embassador

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460-G2s don't do half duplex
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Alberto Lopez

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the rest of the ports in AUTO mode works in half duplex

in combo ports it does not link, only in combo ports...
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David Coglianese, Embassador

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*All configurations Non-blocking
full duplex
* Two new 48 port switches with
10GbE uplinks that support 24 ports
with half/full-duplex operation

You definitely have my interest, I can't wait to see an official answer.

The above is from the data sheet and makes me wonder if they changed the hardware. I swear we previously had issues with half duplex on all 460-G2 and 450-G2 ports.
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Steven Lin, Employee

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Though half duplex is not supported on the x460-G2, the link may come up at half duplex on the combo ports of the X460-G2 switch. While the switch fabric chip does not support half-duplex, the external PHY present in the combo ports does support half-duplex operation. This behavior is a software bug as this is an invalid configuration. CR xos0061486 has been created to disable half-duplex on the external PHYs for the combo ports.

https://gtacknowledge.extremenetworks.com/articles/Q_A/Does-the-X460-G2-support-half-duplex-operatio...
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David Coglianese, Embassador

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Steven,

I am familiar with your response but that leaves me questioning the change in the data sheet.

Talking with a coworker it sounds like there was a release of a a couple 460-G2 models that support half duplex.

Please confirm and provide any details you might have.
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Steven Lin, Employee

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Hi David,
The update in 21.1 and later. Ports 25-48 on the X460-G2-24t-24ht-10GE4 and X460-G2-24p-24hp-10GE4 models can operate in half-duplex mode. All other X460-G2 ports are full-duplex. The document link as below, you could see the different from 2 link.

21.1 and later:
https://documentation.extremenetworks.com/summit/Summit_Family_HW_Install/Switch_ovrvu/c_summit-x460...

16 and earlier
https://documentation.extremenetworks.com/summit_16/Summit_Family_HW_Install/Switch_ovrvu/c_summit-x...