imran.huseynov,   The N3248f-on does indeed support stacking, but it doesn't look to support Virtual Stacking. You can find the guidelines and stacking details on page 205-218 here.   Let me know if this helps.    
Hello dear support,I have two switches N3248P-ON, can i stack them with lan or sfp ports?? (Virtual stacking). Or these switches can stack only with stacking cables and stack ports.Thanks in advance.
N3248P-ON Stack question