Page Comparison

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• The configuration may include a network interface in any of the Abiquo networks
  
  • From Abiquo 3.2: In VM configuration on the Network tab, the user can create a new IP address in a private network
  • The user can request an automatically generated IP address, to create a network interface
  • The user can select an existing IP address to create a network interface
  • For each network interface, Abiquo assigns a unique MAC address
    
    • For public networks, the MAC is generated when the NIC is purchased by the virtual datacenter
    • For external networks, the MAC is generated when the NIC is assigned to the virtual machine
    • For IPv6 networks, the MAC is used to generate the IP address
  • The MAC address is included in network configuration that is sent to the hypervisor

Deploying a VM

When the VM is deployed to a hypervisor

• If the user did not create a NIC, then Abiquo configures one in the default network (if it is private, custom private, external or public)
• The Abiquo Server sends the network configuration to the DHCP Server as a DHCP lease
  
  • The IP address is the one assigned when the VM was configured (by the user or Abiquo)
  • The MAC address was assigned by Abiquo when the VM was configured
  • The lease may include other information, e.g. one-time API key for Chef configuration
  • The IP addresses assigned by the DHCP server are static
• If the VM is the first in the network
  
  • If it is a private network
    
    • Schedule resources and automatically select the VLAN tag (see below)
  • Else
    
    • Schedule resources using the VLAN tag reserved by the user at creation 
  • Create a new VLAN for this network
    
    • in ESX, create a port group for the VLAN
    • in KVM, create a virtual bridge for the VLAN
• Otherwise, attach the NIC to an existing port group/virtual bridge, etc.

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1. It broadcasts a request for network configuration using DHCP
2. The hypervisor passes the request over the service network
   
   • The service network is a trunk connection between hypervisors and DHCP for VLAN networks
   • If you are using a DHCP Relay Server
     
     • the relay forwards the request to the DHCP Server
   • Otherwise
     
     • the DHCP Server receives the request directly
3. The DHCP Server sends a lease to the service network 
   
   • If you are using a DHCP Relay
     
     • the relay forwards the request to the VM
   • Otherwise
     
     • the VM receives the request directly over the service network
4. The VM can now use its network configuration

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