Fbsubnet L May 2026

Below is a vendor-neutral configuration example using standard Linux tools and Open vSwitch (OVS) to create an fbsubnet l instance.

Assuming fbsubnet is installed and authenticated, the basic command is: fbsubnet l

fbsubnet l

This outputs a table with columns like:

| SUBNET_ID | CIDR | REGION | PURPOSE | STATUS | |-----------|------|--------|---------|--------| | subnet-01 | 10.0.1.0/24 | us-east1 | Compute | ACTIVE | | subnet-02 | 10.0.2.0/24 | us-west1 | DB | ACTIVE | | subnet-03 | 192.168.0.0/16 | global | Peering | RESERVED | This outputs a table with columns like: |

Logical subnets can have weighted routing metrics. The l flag often stands for "lightweight" —meaning the subnet does not require a dedicated gateway process, reducing latency. the basic command is: fbsubnet l

Using fbsubnet l as the overlay for Calico or Cilium CNI eliminates the 4096 network limit and enables pod mobility across clusters.