Configuring Auto Negotiation
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.
Reference
Command
[no] autoneg disable
Description
Enable/disable auto negotiation
Parameters
None
Mode
INTERFACE
Example
pbnoscli# configure terminal
pbnoscli(config)# interface ethernet Ethernet1/1
pbnoscli(config-if)# autoneg
disable Disable Auto-Negotiation
pbnoscli(config-if)# autoneg disable
pbnoscli(config-if)#
//to enable again
pbnoscli(config-if)# no autoneg disable
pbnoscli(config-if)#
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#
pbnoscli# show running-config
configure terminal
!
interface ethernet Ethernet1/1
autoneg disable
!
interface ethernet Ethernet4
description interface description
!
interface mgmt
ip address 10.4.4.53/23 gateway 10.4.4.1
!
pbnoscli#
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