Root Bridge Status Doubt!!!

Unanswered Question
Jul 28th, 2007

HI

It's simple: A root switch has always all ports in non-blocking mode??

I mind, could be in blocking state a root Bridge Port??

Thanks.

I have this problem too.
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ladislao2006 Sat, 07/28/2007 - 17:12

Thank you for you answer Mohamed, but could be one of them in blocking state mode by STP??

ladislao2006 Sat, 07/28/2007 - 17:46

Thank you for you answer Mohamed, but could be one of them in blocking state mode by STP??

Amit Singh Sat, 07/28/2007 - 21:26

Nope, it will still bock only one port using the Port ID parameter. The port with the lower ID will be in forwrading state and the other one will get block.

In a well desidged STP network, root ports will never be in blocking state. All the ports on a root bridge as designated ports representing a Lan segement connected to them and are in forwrading state always. Exception is the one mentioned above.

HTH,

-amit singh

mohammedmahmoud Sat, 07/28/2007 - 22:36

Hi Ladislao,

As Amit has stated in a well designed STP network all the root switch ports are designated, unless there is obviously something done wrong as the case stated above where 2 ports are cross-connected, which should never be a case in real life.

HTH,

Mohammed Mahmoud.

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