On 09/23/2015 09:47 AM, Phil Mayers wrote:
If you mean "why it's only duplex limitations", I'm guessing the device is
missing the collision-detect/retransmit hardware for cost reasons. 10/half is
pretty rare these days and, in theory, they're pitched as a datacentre device
(though we have an IBM tape library which is 10/half on it's management port).
When I first saw the details about the EX4300, my initial reaction was that it
was built as a low cost 1Gb dongle for QFabric.
You can force the link up by disabling autoneg, but that comes up
duplex-mismatched - 10/full at the EX end, 10/half at the device end.
All very disappointing; we did not think to specify "must comply with IEEE
802.3" in the RFP :o/
Even putting it in wouldn't have helped unless you verified it yourself anyway
- they list 802.3 support on page 19 of the data sheet:
http://www.juniper.net/assets/us/en/local/pdf/datasheets/1000467-en.pdf
That said, does anyone know if the EX3300 switches suffer from this same
design decision?
--
Frank Sweetser fs at wpi.edu | For every problem, there is a solution that
Manager of Network Operations | is simple, elegant, and wrong.
Worcester Polytechnic Institute | - HL Mencken
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