HP P4000 9.0 HP StorageWorks P4000 SAN Solution User Guide - Page 90

NOTE: When the active interface comes back up, there is a 30-second delay before it becomes active. Table 22 Example Active-Passive failover scenario and corresponding NIC status Example failover scenario 1. Active-Passive bond0 is created. The active (preferred) interface is Eth0. NIC status • Bond0 is the master logical interface. • Eth0 is Active. • Eth1 is connected and is Passive (Ready). 2. Active interface fails. Bond0 detects the failure • Eth0 status becomes Passive (Failed). and Eth1 takes over. • Eth1 status changes to Active. 3. The Eth0 link is restored. • Eth0 status changes to Active after a 30 second delay. • Eth1 status changes to Passive (Ready). Summary of NIC status during failover Table 23 on page 90 shows the states of Eth0 and Eth1 when configured for Active-Passive. Table 23 NIC status during failover with Active-Passive Failover status Normal Operation Status of Eth0 Preferred: Yes Status: Active Data Transfer: Yes Status of Eth1 Preferred: No Status: Passive (Ready) Data Transfer: No Eth0 Fails, Data Transfer Fails Over to Eth1 Preferred: Yes Status: Passive (Failed) Data Transfer: No Preferred: No Status: Active Data Transfer: Yes Eth0 Restored Preferred: Yes Status: Active Data Transfer: Yes Preferred: No Status: Passive (Ready) Data Transfer: No Example network cabling topologies with Active-Passive Two simple network cabling topologies using Active-Passive in high availability environments are illustrated (Figure 35 on page 91). 90 Managing the network