How to configure Cisco Gigastack GBIC Interfaces

[thorsten.steffen]

Hi,

I want to connect two 3550-12T (with current ios version) by using two gigastack gbics. Is there any software configuration necessary or do I just have to interconnect the 2 switches?

Furthermore are there any ios commands which show the current state of the stack like you know from 3750 stacks?

Best Regards,

Thorsten Steffen

[ohassairi]

just connect them, but you will not obtain a stack like 3750. you will only have a 1g cascade. consider it as a normal cascade

[thorsten.steffen]

In this scenario, would there be any difference between using the gigastack gbics and normal 1000BaseT gbics? In other words, are there any benefits when using the gigastack gbics?

[milan.kulik]

Hi,

there is one benefit: price.

If I remember correctly, gigastack GBIC is half price of 1000BaseT GBIC.

If stacking more switches, you can even use half-duplex gigastack connection and reduce the number of GBICs necessary.

BR,

Milan

[glen.grant]

Gigastack gbics are also 1000/half duplex and with the associated collision domain .

[milan.kulik]

They are full-duplex if only one cable connected (i.e., only one of two ports occupied on stacking GBIC).

Which means, with two switches connected via stacking GBICs, you get full-duplex.

BR,

Milan