Does any one know when the new stp cost came?
Do you still know active networks running with the old cost?
It would be interesting ...
the revised nonlinear costs should have been introduced in 1998 802.1D revision of the protocol.
I never see a switch using the old linear costs.
According to first edition of CCNP Switching by Hucaby:
>> Be aware that not all versions of the Catalyst Supervisor code use the newer non-linear scale by
default. For example, Catalyst 5000 versions 2.4 and lower use the older linear scale. Catalyst
5000 versions 3.1 and higher, Catalyst 4000 (all versions), and Catalyst 6000 (all versions) use
the non-linear scale by default.
Our oldest C5500 catos switches have 5.5.x CatOS and use nonlinear costs.
Hope to help