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4
Software Management
Managed systems come with an embedded management CPU card that runs MLNX-OS® man-
agement software.
The MLNX-OS systems management package and related documentation can be downloaded via
the product page:
http://www.mellanox.com/page/mlnx_os.
4.1
InfiniBand Subnet Manager
The InfiniBand Subnet Manager (SM) is a centralized entity running in the system. The SM
applies network traffic related configurations such as QoS, routing, partitioning to the fabric
devices. You can view and configure the Subnet Manager parameters via the CLI/WebUI. Each
subnet needs one subnet manager to discover, activate and manage the subnet.
Each network requires a Subnet Manager to be running in either the system itself (system based)
or on one of the nodes which is connected to the fabric (host based).
The InfiniBand Subnet Manager running on the system supports up to 648 nodes. If the fabric
includes more than 648 nodes, you may need to purchase Mellanox's Unified Fabric Manager
(UFM®) software package.
Each subnet needs one subnet manager to discover, activate and manage the subnet.
Each network requires a Subnet Manager to be running in either the system itself (system based)
or on one of the nodes which is connected to the fabric (host based).
The subnet manager (OpenSM) assigns Local IDentifiers (LIDs) to each port connected to the
fabric, and develops a routing table based on the assigned LIDs.
A typical installation using the OFED package will run the OpenSM subnet manager at system
start up after the drivers are loaded. This automatic OpenSM is resident in memory, and sweeps
the fabric approximately every 5 seconds for new adapters to add to the subnet routing tables.
4.2
Fabric Inspector (Diagnostics)
Fabric Inspector is a plug & play licensed software within MLNX-OS® displaying and filtering
all identified systems and nodes within the fabric.
Fabric Inspector includes a complete set of InfiniBand tools for fabric wide diagnostics to check
node-node and node-switch connectivity and to verify routes within the fabric.
Advanced filtering allows creating filtering rules on a system wide basis, between nodes or port
connections based on traffic patterns and user assigned system names (GUIDs).
37
Mellanox Technologies
No more than two subnet managers are recommended for any single fabric.
Software Management
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