Dual ToR (top of rack) peering provides a redundant path for customers with cluster applications that cannot tolerate service downtime or failure and require a high-availability solution. While Calico ToR connectivity has existed for some time, Calico Enterprise now supports connectivity with dual ToR switches. A cluster that is peered to two ToR switches will still have an active link, even if one switch becomes unavailable, thus ensuring the cluster always has a network connection. Kubernetes cannot do this on its own.
Ensures there is always active-active redundant connectivity between cluster nodes and ToR switches
If a link or software component breaks somewhere in one of those planes, cluster nodes can still communicate over the other plane, and the cluster as a whole continues to operate normally
Eliminates a complex, time-consuming manual process, and reduces operator overhead by automating the bootstrapping and configuration of BGP peering between cluster nodes and ToR switches
Calico Enterprise dual ToR peering provides a redundant path for customers with cluster applications that cannot tolerate service downtime or failure, and require a high-availability solution. Calico:
Calico’s high-availability Kubernetes solution provides two active, independent planes of connectivity between cluster nodes when a dual plane cluster is connected to a dual ToR switch.