topic Re: Problem with create new flow in Software Defined Networking

Problem with create new flow

phoongsaan — Tue, 25 Mar 2014 02:28:25 GMT

Hello everybody, I started evaluating the hp sdn van controller.

I have a problem, when I create a new flow it will get the response message back

{
"error": "com.hp.api.auth.AuthenticationException",
"message": "Authentication required"
}

what should i do ?

thanks eveymuch in advance

Sopon

Re: Problem with create new flow

sdnindia — Tue, 25 Mar 2014 09:56:27 GMT

Hello phoongsaan,

Thanks for your query.

As per the error - "message": "Authentication required" , you have to first get an authentication token by calling the auth api then you can create the flow.

You may have to use authentication json [e.g. { "login": { "user": "sdn", "password": "skyline","domain": "sdn" }} ] to get the token

Please have a look on SDN Controller Programming guide [page 16- Rsdoc Live Reference] .

Please follow the steps and let us know if you are still facing the problem.

Thanks,

HP SDN Team

Re: Problem with create new flow

phoongsaan — Tue, 01 Apr 2014 08:14:52 GMT

Thanks so much for the solution. Now, I try to add the new flow ,

{"flow": {
"priority": 30000,
"table_id": 200,
"idle_timeout": 60,
"match": [
{"ipv4_src": "192.168.1.20"},
{"ipv4_dst": "192.168.1.10"},
{"ip_proto": "tcp"},
{"eth_type": "ipv4"},
{"tcp_dst": "80"}
],
"instructions": [{"apply_actions": [{"output": 5}]}]
}}

it reply me with the response code "400", What should I do?, I already attach the picture of what happen.

Thank you.

Re: Problem with create new flow

sdnindia — Wed, 02 Apr 2014 14:30:28 GMT

Hello phoongsaan,

From the error message “Not supported before version 1.1” , it is clear that the API needs a version OpenFlow 1.1 or above.

By using the GET /of/datapaths REST API you can check the OpenFlow version. After calling this api , in the response body you can see negotiated version which is the OpenFlow version. [for e.g. 1.0.0]

In your json you have table_id field which is supported only in OpenFlow 1.1 and above.So you get the error.

You can either try the api with OpenFlow 1.1 and above or you can modify the call for 1.0.0

A sample json for OpenFlow 1.0.0 is as below ,you might need to modify accordingly

{"flow": {

"priority": 30000,

"idle_timeout": 60,

"match": [

{"ipv4_src": "10.0.0.1"},

{"ipv4_dst": "10.0.0.22"},

{"ip_proto": "tcp"},

{"eth_type": "ipv4"},

{"tcp_dst": "80"}

"actions": [{"output": 1}]

}}

Please let us know if you still face some problem.

Thanks,

HP SDN Team

Re: Problem with create new flow

sdnindia — Wed, 16 Apr 2014 10:25:18 GMT

Hi phoongsaan,

Doing a follow up to see if previous post helps you.
Please let us know if your problem is solved or you still have some problem.

Thanks,
HP SDN Team