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

Table 22 Link aggregation dynamic mode failover scenario and corresponding NIC status
NIC statusExample failover scenario
1. Link Aggregation Dynamic Mode bond0 is created.
Eth0 and Eth1 are both active.
• Bond0 is the master logical interface.
• Eth0 is Active.
• Eth1 is Active.
2. Eth0 interface fails. Because Link Aggregation Dynamic
Mode is configured, Eth1 continues operating.
• Eth0 status becomes Passive (Failed).
• Eth1 status remains Active.
3. Eth0 link failure is repaired.
• Eth0 resumes Active status.
• Eth1 remains Active.
Summary of NIC states during failover
Table 23 (page 62) shows the states of Eth0 and Eth1 when configured for Link Aggregation
Dynamic Mode.
Table 23 NIC status during failover with link aggregation dynamic mode
Status of Eth1Status of Eth0Failover status
Preferred: NoPreferred: NoNormal Operation
Status: ActiveStatus: Active
Data Transfer: YesData Transfer: Yes
Preferred: NoPreferred: NoEth0 Fails, Data Transfer Fails Over to
Eth1
Status: ActiveStatus: Passive (Failed)
Data Transfer: YesData Transfer: No
Preferred: NoPreferred: NoEth0 Restored
Status: ActiveStatus: Active
Data Transfer: YesData Transfer: Yes
Example network cabling topologies with link aggregation dynamic mode
A simple network configuration using Link Aggregation Dynamic Mode in a high-availability
environment is illustrated in Figure 28 (page 63).
62 Managing the network