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Deploying a lab

examples/lab.clab.yml brings up the full trio: SR OS BNG, OLT and NETCONF proxy. The BNG node needs your own SR-SIM image and Nokia license (they are not redistributable); if you don't have them, delete that node and the link — the OLT and proxy work on their own.

cd examples
containerlab deploy -t lab.clab.yml

The decisions that matter in the YAML:

  • shm-size: 4GiB on the OLT. Required with more than one LT plane: each sysrepo context consumes its own shared memory, and running short shows up as netopeer2 RPC timeouts.
  • OLT_LT_SLOTS defines the card inventory per slot, e.g. "1=FGLT-D,2=FWLT-C". Slot N listens for NETCONF on port 832+N. It is applied at startup; changing the layout is editing the variable and redeploying.
  • Per-plane ONU seeds: /seeds/onts_oper.xml feeds LT1's autofind, and /seeds/onts_oper_lt2.xml through ..._lt4.xml feed each clone. A clone without its own file inherits the global one. Files are reloaded on change — you can add or remove ONUs live.
  • config-bng/bng.txt contains the example SR OS startup configuration for the BNG. The BNG image and license are not distributed.
  • The proxy persists its host key in /data: mount a volume so Altiplano doesn't see the device's SSH identity change on every redeploy.

Altiplano (device-fx) points at the proxy IP, not the OLT: the proxy rewrites hello and yang-library into the format the plug expects. See Nokia Altiplano integration for the supported blueprint and device extensions.

With docker compose (smoke test)​

To verify a customization without containerlab there is a minimal compose file with OLT + proxy:

docker compose -f examples/docker-compose.yml up -d
docker compose -f examples/docker-compose.yml logs --tail=100 olt
ssh -p 2222 admin@localhost

You can point it at another image without editing the file:

OLT_IMAGE=light-olt:test docker compose -f examples/docker-compose.yml up -d