Top Descent Over Left Entry
A line descending into a shared LEFT entry port from a section above takes the topmost lane rather than diving under the feeder arriving level from the left, so the two keep a consistent z-order with no boundary crossover.
Mermaid source
%%metro title: Top descent over left entry%%metro line: rr | Red | #e6007e%%metro line: gg | Green | #2db572%%metro grid: up | 0,0%%metro grid: left | 0,1%%metro grid: target | 1,1
graph LR subgraph up [Upstream] %%metro exit: right | gg u1[U1] u2[U2] u1 -->|gg| u2 end subgraph left [Left feeder] %%metro exit: right | rr l1[L1] l2[L2] l1 -->|rr| l2 end subgraph target [Target] %%metro entry: left | rr, gg t1[Prep] t2[Branch A] t3[Branch B] t1 -->|rr,gg| t2 t1 -->|rr,gg| t3 end u2 -->|gg| t1 l2 -->|rr| t1CLI command
nf-metro render examples/topologies/top_descent_over_left_entry.mmd -o top_descent_over_left_entry.svg