multiple EtherChannels

[ZhengWeiWei83103]

HI

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:

4510R------EC-----4510R

     -                       -

      -                     -

       -EC              -EC

         -              -

           - 4510R-

the third 4510R use two EC to connect other two 4510Rs,does the STP can work to prevent loop?

thanks

[andrew.prince]

Yes it will work.

[ZhengWeiWei83103]

thanks

so,one EC port will be block,as the same of physical port?

[andrew.prince]

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.