does this command always show blocked ports on a system, even if backbone or uplink fast are in use ?

I have a pair of MS2000 clustered servers connected to a stack of 3750 switches on ports gi1/0/9 and gi2/0/9.After a failover of the ms cluster, the original primary node cannot be 'pinged' outside its VLAN.You can ping it within the vlan, and from t...