Here is an example of the typical output:

Port:                   2-2A (uport 16; port 16)
MDIO bus:               1
PHY address:            0x89
Enable state:           Enabled
Link status:            DOWN
Laser status:           on
Linkscan mode:          SW
Auto-negotiated:        (no link)
Port ability:           fd = 100MB,1000MB,2500MB,10GB
                        hd = 100MB
                        intf = gmii,sgmii,xgmii
                        medium = fiber
                        pause = pause_tx,pause_rx,pause_asymm
                        lb = none,MAC,PHY
                        flags = autoneg
Advertised ability:     fd = 1000MB,2500MB,10GB
                        hd = <none>
                        intf = <none>
                        medium = <none>
                        pause = <none>
                        lb = <none>
                        flags = <none>
STP mode:               Forward
Learn mode:             FWD
Untag priority mask:    0
Multicast flood (pfm):  FloodNone
Interface:              GMII
Max_frame size:         9234
MDIX mode:              ForcedNormal, Normal
Medium:                 Fiber
SFP Status:             Absent
 

Note: If the device port is advertising auto negotiation, the link partner should also be advertising auto negotiation.

TippingPoint devices will advertise themselves as a DCE (switch) type device by default, as shown in the output. With the device set to auto-negotiate, the device will negotiate MDI-type by cycling from a DCE to a DTE until it is able to match. If auto-negotiation is turned off, auto-MDI is disabled at the hardware level. However, the device software will still try to negotiate MDI by default. If the software auto-MDI functionality is disabled then the following combinations of MDI types will require the stated cables:

DTE-DCE ( straight through cable)
DTE-DTE ( cross over cable)
DCE-DCE ( cross over cable)