Autonegotiation is a signalling mechanism by with two devices connected over Ethernet can choose common transmission parameters such as speed, duplex, mode and flow control.
In this process, the connected device first share their capabilities regarding these parameters and then choose the highest performance mnode the both support.
You can verify the configuration by using the command(s) below:
pbnoscli# show interface status
================================================================================================
Port Name Oper Admin Vlan Speed MTU AutoNeg
================================================================================================
Ethernet1/1 etp1 up up trunk 100000 9100 off
Ethernet2/1 etp2 up up trunk 100000 9100 N/A
Ethernet3/1 etp3 up up trunk 100000 9100 N/A
Ethernet4/1 etp4 down up trunk 100000 9100 N/A
Ethernet5/1 etp5 down up trunk 100000 9100 N/A
Ethernet6/1 etp6 down up trunk 100000 9100 N/A
Ethernet7/1 etp7 down up trunk 100000 9100 N/A
Ethernet8/1 etp8 down up trunk 100000 9100 N/A
Ethernet9/1 etp9 down up trunk 100000 9100 N/A
Ethernet10/1 etp10 down up trunk 100000 9100 N/A
Ethernet11/1 etp11 down up trunk 100000 9100 N/A
Ethernet12/1 etp12 down up trunk 100000 9100 N/A
Ethernet13/1 etp13 up up trunk 100000 9100 N/A
Ethernet14/1 etp14 up up trunk 100000 9100 N/A
<...>
Ethernet60/1 etp60 down up trunk 100000 9100 N/A
Ethernet61/1 etp61 down up trunk 100000 9100 N/A
Ethernet62/1 etp62 down up trunk 100000 9100 N/A
Ethernet63/1 etp63 up up routed 100000 9100 N/A
Ethernet64/1 etp64 up up routed 100000 9100 N/A
pbnoscli#
