Two forwarding root ports on cisco 3120 blade switch.

Unanswered Question
Jan 29th, 2009

Hi,

<br />

<br />After upgrading blade switch 3120 to 12.2(46)SE, I could see two root ports in which both are forwarding.

<br />

<br />Te1/0/1 Root FWD 2000 128.27 P2p

<br />Te2/0/1 Root FWD 2000 128.81 P2p

<br />

<br />Where as STP should've kept the other root port as blocked state and named it has Alternate port.

<br />Also started seeing Mac flap messages.

<br />As soon as IOS was downgraded to 12.2(40)EX3, Problem was solved, even messages were stoped.

<br />Seems to be bug, but couldn't get any.

<br />

I have this problem too.
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