Sample Configurations with SGeRAC and Oracle RAC 10gR2, March 2009

Figure 4. Preferred: single subnet with Ethernet primary and standby including GAB/LLT

Figure 4 shows a common configuration where SG-HB, CSS-HB, RAC-DB-IC, and GAB/LLT share the

same network for cluster communications. This configuration is common for most installations where

the RAC traffic does not saturate the network and negatively affect other components (SG heartbeat,

CSS heartbeat, and GAB/LLT traffic.) There is one network and the network has sufficient bandwidth.

A failure of primary is protected by Serviceguard local LAN failover for SB-HB, CSS-HB and RAC-DB-

IC. GAB/LLT uses both primary (lan1) and standby (lan2) for communications, so GAB/LLT can

tolerate a failure of either the primary or standby.

Figure 5. Dual SG-HB with CSS-HB and RAC-DB-IC on single subnet including GAB/LLT

Figure 5 shows a configuration to address the possibility that heavy RAC-DB-IC traffic affects SG-HB.

The pros and cons are same as figure 3.

Node A

Node B

GAB/LLT

Private

(primary)

Private

(standby)

LAN 1

CSS-HB

RAC-DB-IC

GAB/LLT

LAN 1

LAN 2

Node A

LAN 1

Node B

CSS-HB

RAC-DB-IC

GAB/LLT

Private

(primary)

Private

(standby)

Private

(primary)

LAN 1

LAN 2

GAB/LLT

LAN 2

LAN 3

LAN

GAB/LLT