Chapter 7. Highly Available controller pairs 837.3.4 Configuring Interface Groups (VIFs)The setup process guides the N series administrator through the configuration of InterfaceGroups. In the setup wizard, they are called VIFs.Example 7-4 shows where the VIF is configured in setup. Configure a multimode VIF, which isthe default, using all four Ethernet ports of the N series controller.Example 7-4 Configuring a multimode VIFDo you want to configure virtual network interfaces? [n]: yNumber of virtual interfaces to configure? [0] 1Name of virtual interface #1 []: vif1Is vif1 a single [s], multi [m] or a lacp [l] virtual interface? [m] mIs vif1 to use IP based [i], MAC based [m], Round-robin based [r] or Port based [p] loadbalancing? [i] iNumber of links for vif1? [0] 4Name of link #1 for vif1 []: e0aName of link #2 for vif1 []: e0bName of link #3 for vif1 []: e0cName of link #4 for vif1 []: e0dPlease enter the IP address for Network Interface vif1 []: 9.11.218.173Please enter the netmask for Network Interface vif1 [255.0.0.0]:255.0.0.0The Interface Groups can also be configured by using Data ONTAP FilerView or IBM SystemManager for IBM N series.7.3.5 Configuring interfaces for takeoverDuring setup, you can assign an IP address to a network interface and assign a partner IPaddress that the interface takes over if a failover occurs. In that case, the IP addresses fromthe controller that is being taken over can be accessed even if it is down for maintenance.LAN interfaces can be configured in three ways: Shared interfaces Dedicated interfaces Standby interfacesConfiguring shared interfaces with setupA shared network interface for both the local controller and the partner. If the partner fails, thenetwork interface assumes the identity of a network interface on the partner. However, itworks on behalf of both the live controller and the partner. A network interface performs thisrole if it has a local IP address and a partner IP address. You can assign these addresses byusing the partner option of the ifconfig command.Example 7-5 shows how to configure the shared interfaces. The IP addresses of thecontroller that is being taken over is accessible on the local controller port e0b.Example 7-5 Configuring shared interfaces with setupPlease enter the IP address for Network Interface e0b []: 9.11.218.160Please enter the netmask for Network Interface e0b [255.0.0.0]:255.0.0.0Should interface e0b take over a partner IP address during failover? [n]: yPlease enter the IPv4 address or interface name to be taken over by e0b []: e0b
