HP-UX Serviceguard Heartbeat Configuration Solutions

1/14/1 lan btlan N/A 9 N/A L 1 HP PCI 10/100Base-TX 4 port

1/15/1 lan btlan N/A 10 N/A L 1 HP PCI 10/100Base-TX 4 port

1/17/1 lan btlan N/A 3 N/A L 1 HP PCI 10/100Base-TX 4 port

1/18/1 lan btlan N/A 4 N/A L 1 HP PCI 10/100Base-TX 4 port

c) In the output example above, look for the hardware path obtained in step 3. It will be

listed under the column labeled “hw path”. For example, in the case where the

primary link aggregate is lan9 (hardware path = 1/12/2) and lan10 (hardware

path = 1/13/4), the processor ID for lan9 is 7 and the processor ID for lan10 is 8.

For the other primary heartbeat aggregate lan903, the individual interfaces lan15

(hardware path = 1/14/1) and lan16 (hardware path = 1/15/1) have processor

ids of 9 (lan15) and 10 (lan16).

d) In the case where the standby link aggregate is lan18 (hardware path = 1/17/1)

and lan19 (hardware path = 1/18/1), the processor ID for lan18 is 3 and the

processor ID for lan19 is 4.

e) In this example, lan9, lan10, lan15, lan16, lan18 and lan19 are all on different

processors. So no further steps are necessary in this case.

However, if you have heartbeat interfaces which overlap on CPUs (primary or

standby interfaces), you would need to follow the instructions in the section

“Managing Interrupts to Improve High Availability.”

Managing Interrupts to Improve High Availability

NOTE If you have a configuration with APA (Auto Port Aggregation), an “interface” in the

following section refers to the individual ports within the link aggregation and not to the link

aggregate itself.

Systems with more Processors than Heartbeat interfaces

• If you have more processors than Heartbeat interfaces or the same number of processors

as than Heartbeat interfaces (count both primaries and standby interfaces):

- Assign each primary Heartbeat interface to a different processor

- Assign each standby Heartbeat interface to a different processor

In the following picture (Figure 1), we have 2 heartbeat pairs. There are primary and standby

#1 (P1 and S1), and primary and standby heartbeat #2 (P2 and S2). Since we have 4

interfaces and 4 processors, we can assign each interface to a processor without overlap as

shown.