Sorry for delay been on easter break. I ran the following commands to remove bootp. disable bootprelay all "VR-Default" config bootprelay delete all I then did sh bootprelay and sh config |inc bootp (everything was disabled and no config showed, as expected) As we realised the mistake straight away we didnt do a pcap. We just enabled bootp to get it up and running. As this was on our core switch I'm very limited to troubleshooting that I can do. I am just hoping someone may have some ideas from the top of their head, or experienced the issue themselves.