Re: [ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-08 Thread abercrombiepayments 
Hi Luis,

I had a look at the document and it seems to be very informative and gives 
examples of REST and RPC commands. I kind of figured that this would be the 
solution. I was under the impression that the config datastore contained what 
was learnt by the controller. I might be wrong as I am new to SDN.

Would adding a flow manually on a vswitch automatically push a config to the 
controller config store? I tried this but the config store is still empty.

When I delete a flow on a switch using Mininet command (sh ovs-ofctl del-flows 
s1 -O OpenFlow13) it does not learn automatically from the controller. Is this 
normal? I can add a flow manually and it works.

Thanks for the very informative answers which has cleared some doubts.

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Re: [ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-08 Thread Luis Gomez 
It is all in the docs link I sent, you need a REST client and then pass the 
URL, headers and body as described. Let me know if you have specific questions.

> On Apr 8, 2021, at 7:31 AM, abercrombiepayme...@gmail.com wrote:
> 
> Hi Luis,
> 
> Apologies, I am very new to this.
> 
> Could you provide specific instructions on how I could delete an entire 
> openflow table from a switch? How can I use the xml example from the website?
> 
> 
> Thanks. 
> 
> 


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Re: [ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-08 Thread abercrombiepayments 
Hi Luis,

Apologies, I am very new to this.

Could you provide specific instructions on how I could delete an entire 
openflow table from a switch? How can I use the xml example from the website?

Thanks.

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Re: [ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-08 Thread Luis Gomez 
For flows not pushed by user, you have to use RPCs:

- To delete an individual flow you can do 
this:https://docs.opendaylight.org/projects/openflowplugin/en/stable-aluminium/users/operation.html#deleting-flows-from-switch-using-rpc-operation
 

- To delete all flows for a given table you can use a body like this:

{
"input": {
  
"opendaylight-flow-service:node":"/opendaylight-inventory:nodes/opendaylight-inventory:node[opendaylight-inventory:id='openflow:18097231385380982899']",
  "table_id": 255
 }
}

In the same document you can see RPCs to modify flows.

BR/Luis

> On Apr 7, 2021, at 5:30 AM, abercrombiepayme...@gmail.com wrote:
> 
> [Edited Message Follows]
> 
> I am using Opendaylight Carbon (also tried Oxygen) with Mininet. I created a 
> small network which conects to the remote ODL Controller using OpenFlow 1.3 
> using Virtual machines (Ubuntu 18.04) on the same subnet and the mininet 
> hosts can ping each other as expected.
> 
> When connecting to the controller using a browser, I can login with default 
> credentials and view the topoogy and Nodes using a web UI. Yang shows various 
> properties of which very few gives a response from the controller.
> 
> Problem: When sending the GET request: 
> http://ip_address:8181/restconf/config/opendaylight-inventory:nodes/ I get an 
> error message:
> 
> "Request could not be completed because the relevant data model content does 
> not exist"
> 
> 
> My objectives are to:
> 
> 1) get the controller to send a message to the switches to clear their flow 
> tables
> 2) get the controller to send a message to the switches to modify their flow 
> tables
> 
> 
> Any advice will be really appreciated.
> 
> 
> 
> 


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[ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-08 Thread abercrombiepayments 
[Edited Message Follows]

I am using Opendaylight Carbon (also tried Oxygen) with Mininet. I created a 
small network which conects to the remote ODL Controller using OpenFlow 1.3 
using Virtual machines (Ubuntu 18.04) on the same subnet and the mininet hosts 
can ping each other as expected.

When connecting to the controller using a browser, I can login with default 
credentials and view the topoogy and Nodes using a web UI. Yang shows various 
properties of which very few gives a response from the controller.

Problem: When sending the GET request: 
*http://ip_address:8181/restconf/config/opendaylight-inventory:nodes/* I get an 
error message:

*"Request could not be completed because the relevant data model content does 
not exist"*

My objectives are to:

1) get the controller to send a message to the switches to clear their flow 
tables
2) get the controller to send a message to the switches to modify their flow 
tables

Any advice will be really appreciated.

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Re: [ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-07 Thread Luis Gomez 
See inline:

> On Apr 7, 2021, at 5:30 AM, abercrombiepayme...@gmail.com wrote:
> 
> I am using Opendaylight Carbon (also tried Oxygen) with Mininet. I created a 
> small network which conects to the remote ODL Controller using OpenFlow 1.3 
> using Virtual machines (Ubuntu 18.04) on the same subnet and the mininet 
> hosts can ping each other as expected.
> 
> When connecting to the controller using a browser, I can login with default 
> credentials and view the topoogy and Nodes using a web UI. Yang shows various 
> properties of which very few gives a response from the controller.
> 
> Problem: When sending the GET request: 
> http://ip_address:8181/restconf/config/opendaylight-inventory:nodes/ I get an 
> error message
> 
> 

This request will only show the flows/groups pushed by the user via REST API, 
therefore it is expected no content, try operational vs config to see switch 
flows/groups.
> 
> "Request could not be completed because the relevant data model content does 
> not exist"
> 
> Note: I also get this error message on the switch when trying to view the 
> flow table: mininet> sh ovs-ofctl dump-flows s1 
> 2021-04-07T01:02:40Z|1|vconn|WARN|unix:/var/run/openvswitch/s1.mgmt: 
> version negotiation failed (we support version 0x01, peer supports version 
> 0x04) ovs-ofctl: s1: failed to connect to socket (Broken pipe)
> 
> 

The right command for OF13 protocol is: sh ovs-ofctl dump-flows s1 -O OpenFlow13
> 
> However, I am getting this message with both ODL and RYU, so I am not sure if 
> they are related.
> 
> I need this to work in order to write a Python program to clear flow tables.
> 
> Any advice will be appreciated.
> 
> 
> 
> 


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[ODL Discuss] #opendaylight-help-openflow #opendaylight #help

2021-04-07 Thread abercrombiepayments 
I am using Opendaylight Carbon (also tried Oxygen) with Mininet. I created a 
small network which conects to the remote ODL Controller using OpenFlow 1.3 
using Virtual machines (Ubuntu 18.04) on the same subnet and the mininet hosts 
can ping each other as expected.

When connecting to the controller using a browser, I can login with default 
credentials and view the topoogy and Nodes using a web UI. Yang shows various 
properties of which very few gives a response from the controller.

Problem: When sending the GET request: 
http://ip_address:8181/restconf/config/opendaylight-inventory:nodes/ I get an 
error message:

"Request could not be completed because the relevant data model content does 
not exist"

Note: I also get this error message on the switch when trying to view the flow 
table: mininet> sh ovs-ofctl dump-flows s1 
2021-04-07T01:02:40Z|1|vconn|WARN|unix:/var/run/openvswitch/s1.mgmt: 
version negotiation failed (we support version 0x01, peer supports version 
0x04) ovs-ofctl: s1: failed to connect to socket (Broken pipe)

However, I am getting this message with both ODL and RYU, so I am not sure if 
they are related.

I need this to work in order to write a Python program to clear flow tables.

Any advice will be appreciated.

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