Dell MX9116n EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 518
Load balance and root selection, Enable Rapid-PVST, Con Rapid-PVST
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Load balance and root selection By default, all VLANs use the same forwarding topology - R2 is elected as the root and all 10G Ethernet ports have the same cost. Bridge priority can be modified for each VLAN to enable different forwarding topologies. To achieve Rapid-PVST load balancing, assign a different priority on each bridge. Enable Rapid-PVST By default, Rapid-PVST is enabled and creates an instance during VLAN creation. To participate in Rapid-PVST, port-channel or physical interfaces must be a member of a VLAN. ● Enable Rapid-PVST mode in CONFIGURATION mode. spanning-tree mode rapid-pvst Configure Rapid-PVST OS10(config)# spanning-tree mode rapid-pvst View Rapid-PVST configuration os10# show spanning-tree active Spanning tree enabled protocol rapid-pvst with force-version rstp VLAN 1 Executing IEEE compatible Spanning Tree Protocol Root ID Priority 32769, Address 3417.ec37.1400 Root Bridge hello time 2, max age 20, forward delay 15 Bridge ID Priority 32769, Address 90b1.1cf4.a625 Configured hello time 2, max age 20, forward delay 15 Flush Interval 200 centi-sec, Flush Invocations 8 Flush Indication threshold 5 Interface Designated Name PortID Prio Cost Sts Cost Bridge ID PortID --- ethernet1/1/5 128.40 128 500 BLK 500 32769 90b1.1cf4.9af2 128.40 ethernet1/1/6 128.48 128 500 BLK 500 32769 90b1.1cf4.9af2 128.48 ethernet1/1/7 128.56 128 500 FWD 500 32769 90b1.1cf4.a625 128.56 ethernet1/1/8 128.64 128 500 BLK 500 32769 90b1.1cf4.9af2 128.64 ethernet1/1/9 128.72 128 500 BLK 500 32769 90b1.1cf4.9af2 128.72 ethernet1/1/10 128.80 128 500 BLK 500 32769 90b1.1cf4.9af2 128.80 ethernet1/1/25 128.200 128 500 FWD 500 32769 90b1.1cf4.a625 128.200 ethernet1/1/26 128.208 128 500 FWD 0 32769 3417.ec37.1400 128.48 518 Layer 2
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