I did a little network diagram and I am hoping somebody can help.
As you can see from my diagram, I have 2 core devices which are 6509's and then connected directly to SW1 and SW4, I have 4 3560's. The switches are daisy chained using cooper. I have reduant links on SW1 and SW4 yet I only want to use the primary link unless it fails switch to the secondary link. For this I am using the command "spanning-tree cost 25" on SW4 and on int g0/3 which faces to R2. With my network monitoring software, I am still seeing traffic coming in (recieve) the g0/3 on SW4 yet not going out. I am wondering if the cost is not set properly or if maybe I am doing it the wrong way all together or maybe if this over 100 mb/sec traffic on the port which is in "blocked" state is normal.
Any help is appreciated.