i have 3 4510R switchs,now in two switchs i make a etherchannel,if i do more etherchannels to connect third 4510R,does it works?
the topo like:
the third 4510R use two EC to connect other two 4510Rs,does the STP can work to prevent loop?
Yes it will work.
so,one EC port will be block,as the same of physical port?
Yes - if you have configured the EtherChannel as a layer 2 port, then it acts as any switchport. If you have configured it as a layer 3 routed port - it will act like any layer 3 interface.