Catalyst 2960S-48FPD-L (48 1000baseT and 2 SFP+ 10G ports). When looking at the configuration I see gi1/0/49 and 50 as well as te1/0/1 and 2. I'm assuming the SFP+ ports are the te1/0/1 and 2 ports but where are gi1/0/49 and 50?
The only thing I can think of is that when using SFP modules they are gi1/0/49&50 when using SFP+ modules they are te1/0/1&2.
interface GigabitEthernet1/0/49
!
interface GigabitEthernet1/0/50
!
interface TenGigabitEthernet1/0/1
!
interface TenGigabitEthernet1/0/2
this is the description of your switch and why they use up to 50 ports if physically they are 48. Your understanding is correct. Depending from how you use the SFP you will configure them as normal gx/0/49-50 or TEN interfaces.
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