pg 525 forwarding port

[sgap]

Originally Posted by aneksadh

figure 10.12 pg 525

switch C is the root bridge
f0/1 of switch A and fio/2 of switch D and gi0/1 of switch B are the root ports

i understood till here

but then why do we need to make f0/2 of switch A the designated port, this will allow it to send/receive frames from this port but we already got the best path to switch C
switch B wont send any broadcasts via link GI0/2 so the stretch between switch A and B will have no traffic at all, right ??

pls can somebody be so kind to clarify this ?

thanks

anek

Based on my personal understanding, both of the Fa0/2 on switch A and Gi0/2 on switch B can be blocked, and I think the forwarding port should be the Gi0/2 on Switch D, todd said " any port not listed here would go into blocking mode to stop any loops", I do not think that is correct, since Gi0/2 of switch D should not be blocked although he did not mention this port in the last paragraph on page 524

that is my own opinion, I hope some masters can give us the standard answer.