Demo spanning-tree 802.1w

[mohamadnaameh]

Hello Community,

I try to make demo Lab for spannig-tree 802.1w with GNS3, but I get this result 

the result 

I now in the Sw2 must get Altn BLK 4 but it not show as I new any one have an idea about that

the correct one this :

thanks ....

[MHM Cisco World]

Unusual case.

Remove one link connect hub to SW and check again.

Hub with dual link to SW make issue.

Thanks A Lot
MHM

[mohamadnaameh]

not working, it give the same result

[MHM Cisco World]

These triangle SW'

so the link of SW2 are FWD 

Check link of SW1/SW3 it must one of link BLK.

It no need that SW2 have BLK it can any SW of these triangle topolgy.

[mohamadnaameh]

this for S3

[MHM Cisco World]

So I correct'

SW2 have FWD but SW3 have BLK.

So your config is ok. And SW's is prevent loop.

Thanks A Lot
MHM