While using both Nitrogen and master, I am running into a problem with how the Openflow plugin writes the Flow IDs in Operational. The Flow IDs are as expected in the config data store, but when the flows get installed in an OVS bridge and consequently written to the operational data store, the Flow IDs arent the same.

This appears to happen only for the flows that have the NSH (Network Service Headers) Nicira extensions.

Here is a summary of the flow IDs inconsistency:

curl -H "Content-Type: application/json" -X GET --user admin:admin http://localhost:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:99999963124801/table/4 | python -m json.tool | grep \"id\"

"id": "nextHop_255_8388627",
"id": "nextHop_255_19",
"id": "matchAny_4_10",
"id": 4

curl -H "Content-Type: application/json" -X GET --user admin:admin http://localhost:8181/restconf/operational/opendaylight-inventory:nodes/node/openflow:99999963124801/table/4 | python -m json.tool | grep \"id\"

"id": "matchAny_4_10",
"id": "#UF$TABLE*4-3",
"id": "#UF$TABLE*4-4",
"id": 4

And here is a complete dump of the config and operational flows:

--------------------
Config data store
--------------------

curl -H "Content-Type: application/json" -X GET --user admin:admin http://localhost:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:99999963124801/table/4 | python -m json.tool

{
"flow-node-inventory:table": [
{
"flow": [
{
"barrier": false,
"cookie": 20,
"cookie_mask": 20,
"flags": "",
"flow-name": "nextHop_255_8388627",
"hard-timeout": 0,
"id": "nextHop_255_8388627",
"idle-timeout": 0,
"instructions": {
"instruction": [
{
"apply-actions": {
"action": [
{
"openflowplugin-extension-nicira-action:nx-reg-load": {
"dst":

{ "end": 31, "nx-tun-ipv4-dst": [ null ], "start": 0 }

,
"value": 167772170
},
"order": 0
}
]
},
"order": 0
},
{
"go-to-table":

{ "table_id": 10 }

,
"order": 1
}
]
},
"match": {
"openflowplugin-extension-general:extension-list": [
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsp":

{ "value": 8388627 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsp-key"
},
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsi":

{ "nsi": 255 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsi-key"
}
]
},
"priority": 550,
"strict": false,
"table_id": 4
},
{
"barrier": false,
"cookie": 20,
"cookie_mask": 20,
"flags": "",
"flow-name": "nextHop_255_19",
"hard-timeout": 0,
"id": "nextHop_255_19",
"idle-timeout": 0,
"instructions": {
"instruction": [
{
"apply-actions": {
"action": [
{
"openflowplugin-extension-nicira-action:nx-reg-load": {
"dst":

{ "end": 31, "nx-tun-ipv4-dst": [ null ], "start": 0 }

,
"value": 167772170
},
"order": 0
}
]
},
"order": 0
},
{
"go-to-table":

{ "table_id": 10 }

,
"order": 1
}
]
},
"match": {
"openflowplugin-extension-general:extension-list": [
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsp":

{ "value": 19 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsp-key"
},
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsi":

{ "nsi": 255 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsi-key"
}
]
},
"priority": 550,
"strict": false,
"table_id": 4
},
{
"barrier": false,
"cookie": 20,
"cookie_mask": 20,
"flags": "",
"flow-name": "matchAny_4_10",
"hard-timeout": 0,
"id": "matchAny_4_10",
"idle-timeout": 0,
"instructions": {
"instruction": [
{
"go-to-table":

{ "table_id": 10 }

,
"order": 0
}
]
},
"match": {},
"priority": 5,
"strict": false,
"table_id": 4
}
],
"id": 4
}
]
}

---------------
Operational
---------------

curl -H "Content-Type: application/json" -X GET --user admin:admin http://localhost:8181/restconf/operational/opendaylight-inventory:nodes/node/openflow:99999963124801/table/4 | python -m json.tool

{
"flow-node-inventory:table": [
{
"flow": [
{
"cookie": 20,
"cookie_mask": 0,
"flags": "",
"hard-timeout": 0,
"id": "matchAny_4_10",
"idle-timeout": 0,
"instructions": {
"instruction": [
{
"go-to-table":

{ "table_id": 10 }

,
"order": 0
}
]
},
"match": {},
"opendaylight-flow-statistics:flow-statistics": {
"byte-count": 0,
"duration":

{ "nanosecond": 464000000, "second": 102 }

,
"packet-count": 0
},
"priority": 5,
"table_id": 4
},
{
"cookie": 20,
"cookie_mask": 0,
"flags": "",
"hard-timeout": 0,
"id": "#UF$TABLE*4-3",
"idle-timeout": 0,
"instructions": {
"instruction": [
{
"apply-actions": {
"action": [
{
"openflowplugin-extension-nicira-action:nx-reg-load": {
"dst":

{ "end": 31, "nx-tun-ipv4-dst": [ null ], "start": 0 }

,
"value": 167772170
},
"order": 0
}
]
},
"order": 0
},
{
"go-to-table":

{ "table_id": 10 }

,
"order": 1
}
]
},
"match": {
"openflowplugin-extension-general:extension-list": [
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsp":

{ "value": 19 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsp-key"
},
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsi":

{ "nsi": 255 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsi-key"
}
]
},
"opendaylight-flow-statistics:flow-statistics": {
"byte-count": 0,
"duration":

{ "nanosecond": 464000000, "second": 102 }

,
"packet-count": 0
},
"priority": 550,
"table_id": 4
},
{
"cookie": 20,
"cookie_mask": 0,
"flags": "",
"hard-timeout": 0,
"id": "#UF$TABLE*4-4",
"idle-timeout": 0,
"instructions": {
"instruction": [
{
"apply-actions": {
"action": [
{
"openflowplugin-extension-nicira-action:nx-reg-load": {
"dst":

{ "end": 31, "nx-tun-ipv4-dst": [ null ], "start": 0 }

,
"value": 167772170
},
"order": 0
}
]
},
"order": 0
},
{
"go-to-table":

{ "table_id": 10 }

,
"order": 1
}
]
},
"match": {
"openflowplugin-extension-general:extension-list": [
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsp":

{ "value": 8388627 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsp-key"
},
{
"extension": {
"openflowplugin-extension-nicira-match:nxm-nx-nsi":

{ "nsi": 255 }

},
"extension-key": "openflowplugin-extension-nicira-match:nxm-nx-nsi-key"
}
]
},
"opendaylight-flow-statistics:flow-statistics": {
"byte-count": 0,
"duration":

{ "nanosecond": 464000000, "second": 102 }

,
"packet-count": 0
},
"priority": 550,
"table_id": 4
}
],
"id": 4,
"opendaylight-flow-table-statistics:flow-table-statistics":

{ "active-flows": 3, "packets-looked-up": 0, "packets-matched": 0 }

}
]
}