Dell Emulex Family of Adapters - Manual (Page 973)

Emulex Drivers Version 10.2 for Linux User Manual P010081-01A Rev. A
Appendix C. OneConnect 10 GbE Adapter Port Speed Specifications
Port Speed Negotiation on Non-Mezzanine Cards
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Appendix C. OneConnect 10 GbE Adapter Port
Speed Specifications
Port Speed Negotiation on Non-Mezzanine Cards
OneConnect 10 GbE adapters can support only one Ethernet port speed at a time. On
non-mezzanine cards, its preference is 10 Gb/s. The type of module used
(copper/optical) does not make a difference. If a 10 Gb/s module is plugged into one of
the ports, the adapter runs at a 10 Gb/s speed regardless of its other port’s speed, even
if I/Os are running on that port. This behavior is an adapter constraint; another adapter
can be running on a different speed.
Table C-1 lists negotiated speed specifications per OneConnect 10 GbE adapter port
connection.
Port Speed on Mezzanine Cards
For mezzanine cards, only one Ethernet port speed is supported at a time. Its speed is
the first negotiated speed (either 1 Gb/s or 10 Gb/s), depending on the switch that is
connected.
To change the speed on these cards:
1. Remove the switch from both of the ports.
2. Insert the switch for one port and wait for the link to come up.
The mezzanine card retains this speed until both links are down.
Table C-1 OneConnect 10 GbE Adapter Negotiated Speed Specifications
Port 0 Speed
(Gb/s)
Port 1 Speed
(Gb/s)
Port Link Status OneConnect 10 GbE Speed
(Gb/s)
10 10 Both ports are link up 10
10 1 Only Port 0 is link up 10
1 10 Only Port 1 is link up 10
1 1 Both ports are link up 1
1 - Only Port 0 is link up 1
- 1 Only Port 1 is link up 1
10 - Only Port 0 is link up 10
- 10 Only Port 1 is link up 10