Shows bridge port extender (BPE) Edge Control Protocol (ECP) counter information.
| vpex | Specifies Virtual Port Extender (VPEX). | 
| ports | Specifies the cascade port attached to the BPE. | 
| port_list | Specifies the cascade port attached to the BPE. | 
| ecp | Edge Control Protocol. | 
| statistics | Specifies showing ECP counter information. | 
If you do not specify any ports, information for all cascade ports appears.
The following example shows ECP counter information for BPEs attached to all cascade ports. In this case, there is only one attached BPE on cascade port 1:47:
# show vpex ports ecp statistics 
Port   RxPkt  RxAck  RxReq  RxSeq  TxPkt  TxAck  TxReq  TxSeq  RxErr  TxErr  
===========================================================================
1:47      52      0      0    590     52     26     26     26      0      0 
===========================================================================
Flags    : (*) Active,
           (!) Administratively disabled,
           (A) Auto-calculated timer value
    This command was first available in ExtremeXOS 22.5.
This command is available on ExtremeSwitching 5420 and 5520 series switches.