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3750 / 3750X PortChannel and Subinterfaces

Hi All,

Can anyone make any sense of this or let me know where the magic version number is that this changed from supported to not supported?

3750-12S-CORE(config)#int po8

3750-12S-CORE(config-if)#no swi

3750-12S-CORE(config-if)#no switchport

3750-12S-CORE(config-if)#int po8.15

3750-12S-CORE(config-subif)#

3750-12S-CORE#sh ver

Switch   Ports  Model              SW Version              SW Image

------   -----  -----              ----------              ----------

     1   12     WS-C3750G-12S      12.2(25)SEB4            C3750-IPSERVICES-M

3750X-24P-E(config)#int po1
3750X-24P-E(config-if)#no swi
3750X-24P-E(config-if)#no switchport
3750X-24P-E(config-if)#int po1.15
                              ^
% Invalid input detected at '^' marker.

3750X-24P-E(config)#

3750X-24P-E#sh ver

Switch Ports Model              SW Version            SW Image

------ ----- -----              ----------            ----------

     1 30    WS-C3750X-24P      15.0(1)SE3            C3750E-UNIVERSALK9-M

It doesn't work on 12.2(55) either.

Can't believe some moron changed it. I mean if nothing else it's a waste of resources. 6500 --> 3750 with PortChannel Subinterfaces = No Spanning Tree, 6500 --> 3750 without PortChannel Subinterfaces = SVI's = Spanning Tree. And no I can't avoid Subinterfaces as we are running VRF.

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