公开(公告)号：GB2558163A

公开(公告)日：2018-07-11

申请号：GB201420129

申请日：2014-11-12

Applicant: IBM

Inventor： ANGEL NUNEZ MENCIAS ,  JAKOB LANG ,  MARTIN TROESTER ,  THOMAS POHL

IPC: H04L29/12 ,  G06F9/455

Abstract: A server (14) is provided in a network (210) for dynamically assigning network addresses to virtual network adapters in virtual machines (VMs) (10,12). A sniffer (30) extracts network IP addresses associated with MAC addresses of the VMs from packets sent between the server and the VMs. A table (26, 28) stores the extracted addresses with the corresponding MAC addresses and status information for each VM. If a VM status is suspended, a daemon (32) periodically sends renewal requests to the server so that the VMs assigned IP address is not reassigned to another network component while it is suspended. The renewal messages cease when the VM returns to operation.