API Guide

The Out-of-band (OOB) management network is an isolated network for remote management of servers, switches, and storage
devices using the respective management ports. An S3048-ON installed in each rack provides 1GE connectivity to the
management network. The OOB management ports on each spine and leaf switch are connected to the S3048-ON switches.
For the S3048-ON management switches, all ports are in L2 and in the default VLAN.
SmartFabric Services Components
The SFS components are network fabric, VLT fabric or rack, switches, and links.
Supported network topologies
● Two leaf switches with VLT pair without any spine switch
● Two leaf switches with single spine switch or multiple spines switches
● Multiple leaf switches or VLT pairs with single or multiple spine switches
● Leafs without VLT interconnect (VLTi) with single or multiple spine switches
Network fabric
Network fabric is a fabric that consists of switches that are connected in the cluster. The fabric includes leafs and spine
switches. Enabling SFS creates a network fabric automatically in a leaf and spine network. The network fabric is autoassigned
with a fabric-ID, a name, and description.
NOTE: Before creating the SmartFabric for IOM nodes, ensure that nodes are online by executing the show smartfabric
cluster member command in the DNV master node. You can identify DNV Master node by executing the show smartfabric
cluster command in any node.
VLT fabrics
VLT fabric is a fabric that is created for a VLT pair. The VLT fabric includes two leaf switches, and SFS creates a VLT fabric
automatically in the leaf and spine environment. VLT fabric is autoassigned with a fabric-ID, a universally unique identifier
(UUID).
NOTE:
In SFS, when a VLT fabric is created, the management IP addresses of the VLT peers is used automatically to set up
the VLT backup link. If the management IP address of the peers is changed after the fabric is created, the VLT backup link
is updated automatically.
Switch roles
Switch role defines the role of the switch that is deployed in the leaf and spine topology. Spine and leaf are the industry
standard terms in any Clos topology. The roles are:
Leaf:
● A switch in a rack that connects to a spine switch. The server or the end device is connected to the fabric through a leaf
switch.
● The switch can also be connected to external network using L3 Routed, L3 VLAN, VXLAN, or general-purpose networks.
Spine:
● A switch that connects multiple leaf switches.
● The spine switch can be connected to external network through L3 Routed or L3 VLAN network.
Fabric links
Fabric links create a connection between the switches in a network fabric. The types are:
● Interswitch link (ISL) : A link between a leaf and a spine.
All parallel links with same connectivity are grouped to form a LAG interface. This link is called ISL.
● Intercluster links (ICL) or VLTi: A link between two leaf switches in same rack.
Internal networks for building a fabric
The VLANs in the range from 4000 to 4094 are reserved for SFS internal use.
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SmartFabric Services