Dell MX9116n EMC SmartFabric OS10 User Guide Release 10.5.0 - Page 131

• STP is disabled on server facing port. In case you need to inter-operate switches controlled by SFS to external switches which are running RSTP or MSTP, SFS has an API to change the Global Fabric STP mode to MSTP. In this case SFS will create 2 reserved MSTIs: • MST with instance id 63: Clustering control VLAN (VLAN 4000) is part of this instance. Spine switches are configured to take over as STP root for this MSTI. • MST with instance id 62: All the inter switch reserved VLANs (4001-4091) are part of this configuration. On this MSTI, spanning tree is disabled. • All user created VLANs are part of CST (default MST instance), which inter-operates with RSTP. STP is enabled for this MSTI. • STP is disabled at port-level for all server facing ports. By default, the STP mode is rPVST+. You can change the mode to MSTP once the fabric is build out. When you change the mode, the whole fabric goes through a reboot cycle and the new mode will be set as MSTP. This step is traffic impacting. When the mode is changed, MSTi are created and VLANS are assigned to these MSTi. The CST is configured with STP priority such that SFS controlled switches have lower priority to become a root bridge. There is no change on existing STP behavior for SFS controlled entities because of this change. All other STP behaviors such as Disabling of STP on server facing ports still holds good. SmartFabric commands You can enter SmartFabric Services show commands from the OS10 CLI to view SmartFabric configuration information, including: • SmartFabric cluster role (master or backup) and cluster member information • SmartFabric personality • SmartFabric status, nodes, and network profiles • SmartFabric uplinks smartfabric l3fabric enable Enables the SmartFabric Services on the switches and creates a network fabric in a Clos-based spine-and-leaf architecture. Syntax Parameters smartfabric l3fabric enable role {LEAF [vlti ethernet node/slot/port] | SPINE | SUPER-SPINE} role - Enter the role of the switch in Layer 3 fabric: • LEAF - Specify the role as LEAF for top of rack switches and specify the VLTi ports that interconnect the leaf switches. • SPINE - Specify the role as SPINE for the switch that connects the leaf switches. • SUPER-SPINE - Specify the role as SUPER-SPINE to set the node's role as SUPER-SPINE. Default None Command Mode CONFIGURATION, SmartFabric Usage Information After you enable the L3 fabric and set a role, a network fabric is created automatically with default fabric settings. After executing the command, the system prompts for confirmation and reboot with changed personality. If you type Yes, the switch reloads with the configured SmartFabric personality. For supported platforms, see SmartFabric Services for leaf and spine. Use the smartfabric l3fabric enable role SUPER-SPINE command to enable SFS on the node with the role as SUPER-SPINE. You must have sysadmin:netadmin privileges to run this command. The no smartfabric l3fabric command disables the L3 fabric personality. After you disable the L3 fabric in the switch, the system prompts for confirmation. Example (Spine) OS10(config)# smartfabric l3fabric enable role SPINE Reboot to change the personality? [yes/no]: yes Example (Leaf) OS10(config)# smartfabric l3fabric enable role LEAF vlti ethernet 1/1/4-1/1/5 SmartFabric Services 131