Issue with interface numbering

[hfaisca]

Good morning,
I created a virtual stack between two WS-C3850-48XS-S model switches, but in terms of interfaces I currently have two types.
Active switch: TenGigabitEthernet1/0/1-48 and TenGigabitEthernet1/1/1-16
Standby switch: TenGigabitEthernet2/0/1-48 and TenGigabitEthernet2/1/1-16

These interfaces 1-16 were created after the stack, my question is shouldn't they go up to number 48? Is it a licensing issue?

=============================

---- show license right-to-use summary ----

License Name Type Count Period left
----------------------------------------------
ipbase permanent N/A Lifetime
apcount base 0 Lifetime
apcount adder 0 Lifetime

----------------------------------------------

License Level In Use: ipbase
License Level on Reboot: ipbase
Evaluation AP-Count: Disabled
Total AP Count Licenses: 0
AP Count Licenses In-use: 0
AP Count Licenses Remaining: 0
---- show license right-to-use usage ----

Slot# License Name Type usage-duration(y:m:d) In-Use EULA
------------------------------------------------------------------------
1 ipservices permanent 0 :0 :0 no no
1 ipservices evaluation 0 :0 :0 no no
1 ipbase permanent 6 :6 :1 yes yes
1 ipbase evaluation 0 :0 :0 no no
1 lanbase permanent 0 :0 :0 no no
1 apcount evaluation 0 :0 :0 no no
1 apcount base 0 :0 :0 no no
1 apcount adder 0 :0 :0 no no

[Richard Pidcock]

Can you send a "show inventory" output?  

[hfaisca]

Sending in attachment the "show inventory" output.

Switch 2 is power-off at this moment.

[Reza Sharifi · Accepted solution]

The numbering is correct. WS-C3850-48XS-S comes with 48 10Gig ports and 4 QSFP 40Gig ports. Each 40Gig port can be divided into 4 10Gig ports. So, 4x4=16 10Gig.

48x10 for end devices (1/0/1-48) and  

4 40Gig or 16 10Gig (1/1/1-16) for uplinks.

HTH

[hfaisca]

Now I understand. Thank you Reza

[Reza Sharifi]

Glad to help. Good luck!