Is "nonegotiate" = do not negotiate speed and duplex or DTP?

Answered Question
May 26th, 2009
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On a 3560 switchport below, my goal is to make this as "full duplex and speed 100". Since the connection is fiber, I don't see how I can get 100Mbps.


When I read the documentation, it is not clear whether "nonegotiate" is related to speed and auto or whether that is actually a way to stop DTP protocol on the interface thus avoiding trunking.


Am I right that I should do command "no negotiate"?






Gi0/26 myswitch connected trunk a-full a-1000 1000BaseLX SF P


myswitch#show run int g0/26

Building configuration...


Current configuration : 158 bytes

!

interface GigabitEthernet0/26

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 2-5

switchport mode trunk

end


Correct Answer by Edison Ortiz about 7 years 11 months ago

Marlon,


You are referring to two different commands.


The speed 'nonegotiate' disables the link-negotiation protocol on the Gigabit Ethernet ports hence it speeds up the port opening process.


http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s6.html#wp1017436


The switchport 'nonegotiate' disables the DTP process


http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s7.html#wp1012629


HTH,


__


Edison.

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Correct Answer
Edison Ortiz Tue, 05/26/2009 - 16:10
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Marlon,


You are referring to two different commands.


The speed 'nonegotiate' disables the link-negotiation protocol on the Gigabit Ethernet ports hence it speeds up the port opening process.


http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s6.html#wp1017436


The switchport 'nonegotiate' disables the DTP process


http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s7.html#wp1012629


HTH,


__


Edison.

iyde Wed, 05/27/2009 - 00:00
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If you need 100 Mbps on fibre, then you could buy FastEthernet SFP for both ends of the connection.

This ensures that you'll stay at 100 Mbps :-)

HTH

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