I would check two questions with the network team:
- Are these VLAN's are tagged or untagged, and
- If tagged, did the VLAN ID also change or only the ip address / subnet?
If tagged, for example with vlan 20, your ifcfg files will have the addition .20 at the end of the file and you will need to change the ip address / subnet / gateway in the file corresponding to your interface.vlan.
If the actual VLAN ID has changed, don’t forget to change the file name as well to represent the correct ID.
File example
/etc/sysconfig/network-scripts/ifcfg-enpsf3.20
If untagged then you will encounter the files mentioned by Collin and you will need to change the ip address / subnet / gateway in the file corresponding to your interface.
File example:
/etc/sysconfig/network-scripts/ifcfg-enpsf3