Users Guide

Managing Fabrics

The chassis supports a fabric type, which is Fabric A. Fabric A is used by the single I/O Module, and is always connected to the on-

board Ethernet adapters of the servers.

The chassis has only one I/O module (IOM), where the IOM is a pass-through or switch module. The I/O Module is classied as

group A.

Chassis IOM uses a discrete data path called Fabric, and it is named A. The Fabric A supports only Ethernet. Each server IO adapter

(Mezzanine Card or LOM) can have either two or four ports depending on the capability. The mezzanine card slots are occupied by

PCIe extension cards that are connected to PCIe cards (and not to IO modules). When you deploy the Ethernet, iSCSI, or

FibreChannel networks, span their redundant links across banks one and two for maximum availability. The discrete IOM is identied

with a fabric identier.

NOTE: In the CMC CLI, the IOM is referred to by the convention, switch.

Fresh Power-up Scenario

When the chassis is plugged in and turned on, the I/O module has priority over the servers. The IOM is allowed to turn on before the

others. At this time, verication of their fabric types is not performed.

After the IOMs turn on, the servers turn on, and then CMC veries the servers for fabric consistency.

A pass-through module and switch are allowed in the same group if their fabric is identical. Switches and pass-through modules can

exist in the same group even if they are manufactured by dierent vendors.

Monitoring IOM Health

For information about monitoring IOM health, see Viewing Information and Health Status of the IOM.

Conguring Network Settings for IOM

You can specify the network settings for the interface used to manage the IOM. For Ethernet switches, the out-of-band

management port (IP address) is congured. The in-band management port (that is, VLAN1) is not congured using this interface.

Before conguring the network settings for the IOM, make sure the IOM is turned on.

To congure the network setting of IOM in Group A, you must have the Fabric A Administrator privileges.

NOTE: For Ethernet switches, the in-band (VLAN1) and out-of-band management IP addresses cannot be the same, or

cannot be on the same network. This results in the out-of-band IP address in being not set. See the IOM documentation

for the default in-band management IP address.

NOTE: Do not congure I/O module network settings for Ethernet pass-through and Inniband switches.

Conguring Network Settings for IOM Using CMC Web Interface

To congure the network settings for I/O Module:

1. In the left pane, click Chassis Overview, click I/O Module Overview, and then click Setup. Alternatively, to congure the

network settings of the only available I/O module that is A, click A Gigabit Ethernet, and then click Setup.

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