In the current switch Management VLAN is 48. Can you please someone explain it to me, why we dont give trunk native VLAN as 48, and we configure the same as access VLAN? Thanks in advance.
Native vlan use for carrying all untagged network traffic and Device VLAN use to management purposes of devices.
But Management vlan is same as other User VLANs.
VLAN 1 is a by default Management VLAN(in cisco) and it must change to other vlan because of security reason. It is recommended by cisco.
In addition to that both management VLAN and native vlan should be separated from user VLANs.
Simply It is a best practice and we can use Management VLAN as a Native vlan. But It is not a good practice.