What is module number ? i.e. the 0 in 0/1
what mode of the device is this?
show interface status will help you.
0 in 0/x usually means the main module of a device, main board. it is fixed port id, if you ahve bays and slots, then numbering starts with module id, slot id, port/interface id
Module number means slot number or card number .On some router or switch you can add additional line cards for example
in slot 0 , slot1 , slot2 you have added three line cards all total .
now for example slot 1 have 24 gig ethernet ports in that line card now it will be having naming convention like gigethernet0/1 - gigethernet1/24 similarly on slot number 2 u will have gigethernet1/1 - gigethernet1/24 and in slot number 3
gigethernet2/1 - gigethernet2/24 .
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