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jmgilman merged 1 commit into from
Sep 12, 2026
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docs(networking): reserve OVN spike external addresses #30

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14 changes: 14 additions & 0 deletions docs/docs/reference/networking/address-plan.md
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Expand Up @@ -94,6 +94,20 @@ by the fleet `cluster/` project and mirrored in the seeds), and lab-node AMT
addresses are static in MEBx so out-of-band access survives a gateway outage.
The AMT interfaces have no DHCP reservations.

### OVN external addresses

Reserve `10.10.40.64` through `10.10.40.79` for the agentcompute OVN
spike and its Phase 5 handoff. Fleet owns the uplink allocation. These are
external router and network-forward addresses on VLAN 40, not a separate
routed subnet or an extension of the `.200`–`.250` DHCP pool. Do not assign
them to other endpoints.

Temporary OVN central runs on `sandbox01` at `10.10.40.10`, with northbound
TCP port `6641` and southbound TCP port `6642`; it remains running until
Phase 5 replaces it. Chassis encapsulation uses the members' VLAN 30
addresses. See the [spike report](https://github.com/GilmanLab/agentcompute/blob/spike/ovn-mechanism/spikes/ovn/README.md)
for measurements and the northbound/chassis sequencing constraint.

## Gateway interface mapping

| `gw01` chassis port | VyOS interface | Mode | Network |
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