Disabling Link Negotiation - Cisco Nexus 3548 Configuration Manual

Disabling Link Negotiation

Example
This example shows how to set the speed to 40 Gbps on Ethernet interface 1/33:
switch# configure terminal
switch(config)# interface ethernet 1/33-36
switch(config-if-rang)# shut
switch(config-if-rang)# exit
switch(config)# interface ethernet 1/33
switch(config-if)# speed 40000
switch(config-if)# no shut
Disabling Link Negotiation
You can disable link negotiation using the no negotiate auto command. By default, auto-negotiation is enabled
on 1-Gigabit ports and disabled on 10-Gigabit ports. The no negotiate auto command is supported on 100M
port with full duplex setting.
This command is equivalent to the Cisco IOS speed non-negotiate command.
Note Auto negotiation configuration is not applicable on 10-Gigabit ports. When auto-negotiation is configured on
a 10-Gigabit port the following error message is displayed:
ERROR: Ethernet1/40: Configuration does not match the port capability
SUMMARY STEPS
1. switch# configure terminal
2. switch(config)# interface ethernet slot/port
3. switch(config-if)# no negotiate auto
4. (Optional) switch(config-if)# negotiate auto
DETAILED STEPS
Command or Action
Step 1 switch# configure terminal
Step 2 switch(config)# interface ethernet slot/port
Step 3
switch(config-if)# no negotiate auto
Step 4 (Optional) switch(config-if)# negotiate auto
Cisco Nexus 3548 Switch NX-OS Interfaces Configuration Guide, Release 9x
12
Purpose
Enters global configuration mode.
Selects the interface and enters interface mode.
Disables link negotiation on the selected Ethernet interface
(1-Gigabit port).
Enables link negotiation on the selected Ethernet interface.
The default for 1-Gigabit ports is enabled.
This command is not applicable for 10GBase-T
Note
ports. It should not be used on 10GBase-T ports.
Configuring Layer 2 Interfaces