What is mean by Port channel ?

can you explain it more ?

logical connection that is made up of multiple physical connections.

Thanks dynamox

Hi Dynamox,

I have one more query. Are  the Port group and port channels same ?

i believe they are different things, port-group is a number of ports that share the same asic on the switch, for example on Cisco MDS 9513

9513a1# sh port-resources module 1
Module 1
  Available dedicated buffers for global buffer #0 [port-groups 1-4] are 5117
  Available dedicated buffers for global buffer #1 [port-groups 5-8] are 5117
 Port-Group 1
  Total bandwidth is 12.8 Gbps
  Total shared bandwidth is 4.8 Gbps
  Allocated dedicated bandwidth is 8.0 Gbps
  --------------------------------------------------------------------
  Interfaces in the Port-Group       B2B Credit  Bandwidth  Rate Mode
                                        Buffers     (Gbps)
  --------------------------------------------------------------------
  fc1/1                                      32        8.0  shared
  fc1/2                                     500        8.0  dedicated
  fc1/3                                      32        8.0  shared