9.5.01 HP P4000 SAN Solution User Guide (AX696-96168, February 2012)

Table 20 Example Active-Passive failover scenario and corresponding NIC status
NIC statusExample failover scenario
1. Active-Passive bond0 is created. The active (preferred)
interface is Eth0.
• Bond0 is the master logical interface.
• Eth0 is Active.
• Eth1 is connected and is Passive (Ready).
2. Active interface fails. Bond0 detects the failure and Eth1
takes over.
• Eth0 status becomes Passive (Failed).
• 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 21 (page 59) shows the states of Eth0 and Eth1 when configured for Active-Passive.
Table 21 NIC status during failover with Active-Passive
Status of Eth1Status of Eth0Failover status
Preferred: NoPreferred: YesNormal Operation
Status: Passive (Ready)Status: Active
Data Transfer: NoData Transfer: Yes
Preferred: NoPreferred: YesEth0 Fails, Data Transfer Fails Over to
Eth1
Status: ActiveStatus: Passive (Failed)
Data Transfer: YesData Transfer: No
Preferred: NoPreferred: YesEth0 Restored
Status: Passive (Ready)Status: Active
Data Transfer: NoData Transfer: Yes
Example network cabling topologies with Active-Passive
Two simple network cabling topologies using Active-Passive in high availability environments are
shown in Figure 26 (page 60).
Configuring network interface bonds 59