What smartport role for core switch to core switch trunks

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Aug 5th, 2008
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Hi


I have a few questions relating to smartport roles and with which one is correct for specific trunk links.


Question.


1. Should I modify the 2 x trunk ports between each of the 3750G Core/Dist switches?

and if so, what role will I give them, Switch or Router? (as both 3750G's cores are running L2 and L3)


2.For Trunk ports assigned to specific vlans on the 2 x 3750G's(cores), I believe these should be assigned the role of a switch, but should I select Vlan 1(default) as the Native Vlan


3. Why use smartports, what are the benefits ?



Many thanks


Mark

Correct Answer by Edison Ortiz about 8 years 8 months ago

is there any point in using Smartports on them aswell?


No point.


I personally have never used Smartports and I've configured thousands of switches.


If you want to know what's in the Smartport macro, you can type the command sh parser macro and observe the syntax.



HTH,


__


Edison.

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Edison Ortiz Tue, 08/05/2008 - 07:08
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1. Switch Role


2. You can select any active Vlan in the switch as Native Vlan. Preferable, select a non-routable Vlan for this task. If you aren't using Vlan1 for data traffic, use it for inter-switch links in native mode.


3. Smartports allow novice admins in the Cisco world to configure ports without knowing all the necessary commands.


__


Edison.

bavingtonm Tue, 08/05/2008 - 07:16
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Hi


So if I'm happy I have configured the trunks correctly via CLI is there any point in using Smartports on them aswell?


Mark

Correct Answer
Edison Ortiz Tue, 08/05/2008 - 07:25
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is there any point in using Smartports on them aswell?


No point.


I personally have never used Smartports and I've configured thousands of switches.


If you want to know what's in the Smartport macro, you can type the command sh parser macro and observe the syntax.



HTH,


__


Edison.

bavingtonm Tue, 08/05/2008 - 07:48
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Hi


My only concern now is... by selecting the trunks as smartports, it has added a number of lines to the config, as you would expect.


Do these extra features affect the operation now?


Please will you look at my original sh run from the Core/Dist switches before I added the smartport and also the sh run from after it was added. Then can you give me your opinion on what is best?


Many thanks


Mark



Edison Ortiz Tue, 08/05/2008 - 09:54
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Yes, they do affect the operation in the switch and in the switchports.


The Smartports have enabled QoS in the switch.


For inter-switch link configuration on a switchport, the original file was sufficient with:


switchport trunk encapsulation dot1q

switchport mode trunk


HTH,


__


Edison.

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