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2016-07-28 01:51:38 -0800 commented answer Can SNMP4SDN use on mininet switchs

hi, does openflow has some function like snmp trap? so when there is error in one of the switchs, user can use opendaylight to monitor.

2016-07-27 19:04:40 -0800 asked a question Can SNMP4SDN use on mininet switchs

Hi All,


I am using opendaylight-lithium-sr3, mininet to emulate topology. I would like to use SNMP4SDN trap for mininet topology but i not sure whether SNMPSDN able to use on mininet switchs.


I would like a ask

1) Can SNMP4SDN use on mininet switchs?

2) If yes, How do i insert mininet's switch infomation to switch list?



Best Regards,

Luis

2016-07-14 20:59:24 -0800 received badge  Notable Question (source)
2016-07-11 02:08:30 -0800 commented answer add flow in custom api

Hi, Do dependency import function to the program or copy the function to the program? so far what i am able to do is to use RESTFul api to called other API.

2016-07-06 17:21:41 -0800 received badge  Popular Question (source)
2016-07-04 18:19:42 -0800 commented answer add flow in custom api

HI, it seem the custom API i create is standalone, there is feature i can install(only odl-dlux-all). i can't add l2switch import to my code. do i need to import my custom API to main opendaylight-karaf or i need to do something else to add l2switch to my custom API?

2016-06-30 22:52:00 -0800 commented answer add flow in custom api

Thank you, is it possible to called the InitialFlowWriter function from custom API instead of implementing the code to custom api?

2016-06-30 17:58:15 -0800 asked a question add flow in custom api

Hi all,

i am trying to create a custom API that able to calculate a shortest path and establish flow. i have manage to implement shortest path algorithm and now left establish flow.

Tools: opendaylight lithium , eclipse , maven 3.3.9

my question is 1) is there now establish flow file/code i am to use as reference?

2016-06-30 17:52:34 -0800 commented answer errro when compelling custom api

thank you. it solve the error.

2016-06-30 11:09:25 -0800 received badge  Popular Question (source)
2016-06-22 22:14:14 -0800 asked a question errro when compelling custom api

Hi all,

I am trying to create a custom api base on a api tutorial on

https://wiki.opendaylight.org/view/Op...Controller:MD-SAL:StartupProject_Archetype

Tools: opendaylight lithium , eclipse , maven 3.3.9


i am able to to compile the the folder in api but not in impl( flowimpl.java ).

error message image description


there is no error message on eclipse image description

Questions 1) what is the error?

many thanks in advance

2016-06-13 18:28:37 -0800 asked a question having error when installing "hello world" application

Hi all,

i have error when I try to install hello world application and have never try maven before .I am using distribution-karaf-0.3.3-Lithium-SR3 version as my controller.

The "hello world" tutorial I follow is from https://wiki.opendaylight.org/view/Op...Controller:MD-SAL:StartupProject_Archetype


The "hello world" parameter i have insert image description

i have error when i execute "mvn clean install" command image description


My question is

1) How do I resolve this error? many thanks in advance.

2016-05-31 00:30:30 -0800 commented answer can't get complete topology information

Hi @bhavesh07, i only be able to discover complete topology for a few seconds. After that it will not discover correct topology(e.g. only able to discover few nodes).

2016-05-24 06:16:12 -0800 received badge  Famous Question (source)
2016-05-23 20:05:17 -0800 commented answer get topology result using opendaylight api/mininet api

if jar file cant be edit, is it possible to create a application that retrieve link infomation form TopologyLinkDataChangeHandler.java?

2016-05-23 08:29:09 -0800 received badge  Notable Question (source)
2016-05-22 16:19:36 -0800 commented answer get topology result using opendaylight api/mininet api

first solution: I cant find topologyLinkDatachangeHandler.java and how to setup environment to code opendaylight? i try to use eclipse but can't access to JAR file(encrypted). can i access l2switch feature without enable l2switch feature because my current opendaylight did't have l2switch enabled ?

2016-05-19 23:43:02 -0800 received badge  Popular Question (source)
2016-05-19 18:07:30 -0800 commented answer get topology result using opendaylight api/mininet api

hi, i notice there is change in destination node but i don't understand the change mean.i have update my post with more detail.

2016-05-19 00:17:50 -0800 asked a question get topology result using opendaylight api/mininet api

hi,

i have create a custom topology in mininet and have install opendaylight(lithium). on my opendaylight, i have install 'old-dlux-all' and 'odl-l2switch-switch-ui'. i have to establish a flow between A and E

image description


i am trying to create a webpage that able do network fail recovery, i am able to create flow using webpage. when i down one of the connection(A - B) in the mininet.

i try to use " http://192.168.7.146:8181/restconf/op... " to view topology. i check the link and i notice there is change in destination node, i don't understand the change mean.


Before adding flow image description


Afteradding flow image description

my question is

1)is there a api on opendaylight or minient that able to view which connection is up?

2)is there a api on opendaylight or minient that able to test connection ?

many thanks in advance. :)

2016-05-16 18:19:34 -0800 received badge  Famous Question (source)
2016-05-11 17:04:12 -0800 marked best answer can't get complete topology information

hi,

i have create a custom topology in mininet and have install opendaylight(lithium). on my opendaylight, i have install 'old-dlux-all' and 'odl-l2switch-switch-ui'.

Topology image description




i want to retrieve topology information from opendaylight using php curl but i can't get complete topology information. I had try to retrieve topology information using opendaylight(Yang UI),postman, php curl but still can't get complete topology information . My topology have 8 node and 20 link(retrive link and forward link). It work fine when retrieve small topology information(3 host and 3 switch).


when i try to get topology information, i always get random number of node and link (e.g. 3-6 node) note: i have check my network connection.

Result image description

URL: http://192.168.7.146:8181/restconf/op...

my question is

1)how do i get complete topology information?

many thanks in advance. :)


2016-05-11 17:04:11 -0800 commented answer can't get complete topology information

@bhavesh07: thank you, i have start a new opendaylight and i able to discover complete topology information.
jamoluhrsen: thank you for helping me with this problem.

2016-05-10 23:18:44 -0800 answered a question can't get complete topology information
import pdb
from mininet.topo import Topo

class MyTopo( Topo ):

     def __init__( self ):
        Topo.__init__( self )

        A1  = self.addSwitch( 'A1' )
        B2 = self.addSwitch( 'B2' )
        C3 = self.addSwitch( 'C3' )
        D4 = self.addSwitch( 'D4' )
        E5 = self.addSwitch( 'E5' )
        F6 = self.addSwitch( 'F6' )
        G7 = self.addSwitch( 'G7' )
        H8 = self.addSwitch( 'H8' )

        h1 = self.addHost( 'h1' )
        h2 = self.addHost( 'h2' )
        h3 = self.addHost( 'h3' )
        h4 = self.addHost( 'h4' )
        h5 = self.addHost( 'h5' )
        h6 = self.addHost( 'h6' )
        h7 = self.addHost( 'h7' )
        h8 = self.addHost( 'h8' )


        SwitchList = (A1,B2,C3,D4,E5,F6,G7,H8)


   #host
        self.addLink(A1, h1)
        self.addLink(B2, h2)
        self.addLink(C3, h3)
        self.addLink(D4, h4)
        self.addLink(E5, h5)
        self.addLink(F6, h6)
        self.addLink(G7, h7)
        self.addLink(H8, h8)

     #switch
        self.addLink(A1, E5)
        self.addLink(A1, G7)

        self.addLink(E5, F6)
        self.addLink(E5, H8)

        self.addLink(F6, H8)
        self.addLink(F6, D4)

        self.addLink(D4, H8)

        self.addLink(B2, G7)

        self.addLink(G7, H8)

        self.addLink(H8, C3)



topos = { 'mytopo': ( lambda: MyTopo() ) }
2016-05-10 21:28:11 -0800 received badge  Notable Question (source)
2016-05-10 18:28:20 -0800 commented question can't get complete topology information

jamoluhrsen: sudo mn --custom 8h8s.py --topo mytopo --switch ovsk,protocol=13openflow --link
tc,bw=10,delay=10ms --mac --controller=remote,ip=192.168.7.134

for connection i use l2switch-switch-ui feature.