Fast Failover for STP and Cluster


Previously, cluster STP operation did not support fast failover because Netvisor ONE does not share STP state machine state between the two nodes. As a result, when the master fails, the slave recomputes the STP state from scratch. When the cluster comes online, the cluster recomputes the STP state from scratch. This causes topology changes which cause traffic loss until the STP converges. By default, Netvisor ONE supports fast failure.

 

Netvisor One supports show commands are available for this feature:


stp-state-show


stp-port-state-show


CLI (network-admin@Leaf1) > stp-state-show


switch:           Leaf-1

vlan:             1

ports:            none

instance-id:      1

name:             stg-default

bridge-id:        66:0e:94:d5:b0:cc

bridge-priority:  32769

root-id:          66:0e:94:35:c2:ce

root-priority:    32769

root-port:        128

hello-time:       2

forwarding-delay: 15

max-age:          20

disabled:         none

learning:         none

forwarding:       none

discarding:       none

edge:             none

designated:       none

alternate:        none

backup:           none

 

STP parameters such as bridge-priority, port cost values configured before upgrading to Netvisor One 2.4.0 are set to default values after upgrade to Netvisor One 2.4.0.


You must reconfigure STP after upgrading the software.