Owners Manual
Dell Integrated Systems for Oracle Database 2.0 - Owner’s Guide 1.1
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3.2.1.4 S6000 Spanning Tree Protocol (STP) configuration
Though VLT offers a loop-free Layer2 topology, as a best practice to prevent configuration
and patching mistakes, Rapid Spanning Tree Protocol (RSTP) is enabled on both the S6000
switches. Enabling RSTP also helps prevent any loops that could occur just before the VLT
domain is established. Both the switches are configured with the default S6000 RSTP
switch settings. Some of the important ones are:
Bridge priority on both the S6000 switches are left as-is at the default high value
of 32768 to ensure that either of these two DISOD ToR switches do not become
the root bridge when plugged in to the customer’s public network and cause any
type of disruption. These priority values can be adjusted or reconfigured later
based on the customer’s spanning tree topology preferences.
PortFast is enabled on the FortyGigE ports that are used for Oracle database
private network to prevent any delay for the Oracle Grid infrastructure’s Cluster
Synchronization Services (CSS) misscount feature that could lead to missed
network heartbeats and Oracle node evictions.
3.3 SAN switch configurations
This section describes the switch configuration details of the SAN switches supported by
the DISOD solution rack.
3.3.1 Brocade 6510 switch configurations
Brocade 6510 16 Gbps switches are used as the SAN switches in the FC-based DISOD
solution. This section provides information about the switch settings that the redundant
6510 FC switches ship with.
The 6510 switches are preconfigured with port-based zoning in order to provide out-of-
box access to the storage volumes from the database nodes. Using one of the Brocade
6510 switches in a 4×4 DISOD configuration as an example, Figure 10 shows the
predefined port connectivity configuration between 6510 and the database nodes, and
between 6510 and the DAAD HA pair nodes.
Figure 10 Brocade 6510 FC switch predefined port connectivity
DB #3'
(U24-25)
DB #4'
(U26-27)
DB #3
(U24-25)
DB #4
(U26-27)
DB #1
(U19-20)
DB #2'
(U21-22)
DB #1
DB #1'
(U19-20)
DB #2
(U21-22)
DB #2 DB #3 DB #4
DAAD #3'
(U11-12)
DAAD #4'
(U09-10)
DAAD HA Pair #2
DAAD #3
(U11-12)
DAAD #4
(U09-10)
DAAD #1
(U15-16)
DAAD #2'
(U13-14)
DAAD HA Pair #1
DAAD #1'
(U15-16)
DAAD #2
(U13-14)
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27
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0
Brocade 6510
Reserved for
DAAD HA pair
expansion
Reserved for
DB node
expansion