Stacking/Cascade with MTRJ LWL-Ports

[tstauffer]

Hi,

i want to stack two switches via MTRJ ports.

Can i connect the two switche with standard

MTRJ cable ?

Is this cable a crossover cable ?

[Kevin Dorrell]

The standard MTRJ cable is indeed a crossover cable.

Unlike copper RJ45, you don't need to worry about whether the MTRJ cable is crossed or not. All MTRJ cables are crossed, even the infrastructure ones behind patch panels.

If you think about it, you always have an odd number of cables between chassis patch, however many patch panels you go through. (Count the patch cords as 1, and the link joining the patchpanel as 1.) Therefore an odd number of crosses, which is equivalent to one songle cross.

Kevin Dorrell

Luxembourg

[tstauffer]

scenario 1:

--- MTRJ/MTRJ --- THIS Works

scenario 2:

- MTRJ/MTRJ - - MTRJ/MTRJ - THIS Works Not, and you have no chance to change the pins at the lwl-cables !

[Kevin Dorrell]

I understand the problem. When I built my network, I specified that all the inhouse links were to be crossed internally. That way it always works, however many hops you have. I thought everyone did that.

Kevin Dorrell

Luxembourg