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SDN-IP currently uses a simple JSON file format to import configuration data. There are two separate files: addresses.json for IP and MAC address data, and sdnip.json for BGP peering session data.

Location

These configuration files need to be placed in the config directory. Currently this is located at KARAF_ROOT/../config, and the path is not currently configurable.

When using the ONOS cell mechansim to deploy and ONOS cluster, the config files can be placed in ONOS_ROOT/tools/package/config. Then they will be automatically be copied to the correct location on the cell instances when the cluster is deployed.

addresses.json

The addresses.json file is used to configure the addresses that ONOS uses to talk with the outside world. This configuration is mainly used for proxy ARP, so that the proxy ARP module knows how to respond to ARP requests coming from outside the network.

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Each BGP speaker potentially has multiple peering sessions to different external networks. It is possible for these peering sessions to be on different IP subnets, which means each BGP speaker can potentially have multiple IP addresses it is peering on. These addresses must be configured in the sdnip.json file, but they also need to be configured on the interfaces of the BGP speaker, so that it can receive packets sent to it on those addresses.

Running SDN-IP on ONOS