Chapter 7. Highly Available controller pairs 85Example 7-4 shows where the VIF is configured in setup. Configure a multimode VIF, which isthe default, by 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 the setup process, you can assign an IP address to a network interface and assign apartner IP address that the interface takes over if a failover occurs. In that case, the IPaddresses from the controller that is taken over can be accessed, even if it is down formaintenance.LAN interfaces can be configured in the following ways: Shared interfaces Dedicated interfaces Standby interfacesConfiguring shared interfaces with setupA shared network interface for 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 the live controller and the partner. A network interface performs this role ifit has a local IP address and a partner IP address. You can assign these addresses by usingthe partner option of the ifconfig command.Example 7-5 shows how to configure the shared interfaces. The IP addresses of thecontroller that is 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 []: e0bAfter finishing the setup, the system prompts you to reboot to make the new settings effective.Attention: If the partner is a VIF, you must use the VIF interface name.
