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Code Block
onos> intents
id=0x223838ca0x0, state=INSTALLED, type=HostToHostIntent, appId=org.onlab.onos.gui
	constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}]
id=0x13e859c60x1, state=WITHDRAWN, type=HostToHostIntent, appId=org.onlab.onos.cli
	constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}]

...

Code Block
 onos> intents -i
id=0xffffffffe2a484dd0x2, state=INSTALLED, type=HostToHostIntent, appId=org.onlab.onos.ifwd
    constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}]
    installable=[
PathIntent{id=0xffffffffc68cba730x4, appId=DefaultApplicationId{id=2, name=org.onlab.onos.ifwd}, 
	selector=DefaultTrafficSelector{criteria=[ETH_SRC{mac=00:00:00:00:00:0D}, ETH_DST{mac=00:00:00:00:00:07}]}, 
	treatment=DefaultTrafficTreatment{instructions=[]}, constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}],	
	path=DefaultPath{src=ConnectPoint{elementId=00:00:00:00:00:0D/-1, portNumber=0},
						dst=ConnectPoint{elementId=00:00:00:00:00:07/-1, portNumber=0}, type=INDIRECT, state=ACTIVE, durable=false}},
PathIntent{id=0xffffffffde7767b70x5, appId=DefaultApplicationId{id=2, name=org.onlab.onos.ifwd},
	selector=DefaultTrafficSelector{criteria=[ETH_SRC{mac=00:00:00:00:00:07}, ETH_DST{mac=00:00:00:00:00:0D}]},
	treatment=DefaultTrafficTreatment{instructions=[]}, constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}], 	
	path=DefaultPath{src=ConnectPoint{elementId=00:00:00:00:00:07/-1, portNumber=0}, 
						dst=ConnectPoint{elementId=00:00:00:00:00:0D/-1, portNumber=0}, type=INDIRECT, state=ACTIVE, durable=false}}]

...

Code Block
 onos> intents -i
id=0xffffffffe2a484dd0x0, state=INSTALLED, type=HostToHostIntent, appId=org.onlab.onos.ifwd
    constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}]
    installable=[
PathIntent{id=0xffffffffc68cba730x1, appId=DefaultApplicationId{id=2, name=org.onlab.onos.ifwd}, 
	selector=DefaultTrafficSelector{criteria=[ETH_SRC{mac=00:00:00:00:00:0D}, ETH_DST{mac=00:00:00:00:00:07}]}, 
	treatment=DefaultTrafficTreatment{instructions=[]}, constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}],	
	path=DefaultPath{src=ConnectPoint{elementId=00:00:00:00:00:0D/-1, portNumber=0},
						dst=ConnectPoint{elementId=00:00:00:00:00:07/-1, portNumber=0}, type=INDIRECT, state=ACTIVE, durable=false}},
PathIntent{id=0xffffffffde7767b70x2, appId=DefaultApplicationId{id=2, name=org.onlab.onos.ifwd},
	selector=DefaultTrafficSelector{criteria=[ETH_SRC{mac=00:00:00:00:00:07}, ETH_DST{mac=00:00:00:00:00:0D}]},
	treatment=DefaultTrafficTreatment{instructions=[]}, constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}], 	
	path=DefaultPath{src=ConnectPoint{elementId=00:00:00:00:00:07/-1, portNumber=0}, 
						dst=ConnectPoint{elementId=00:00:00:00:00:0D/-1, portNumber=0}, type=INDIRECT, state=ACTIVE, durable=false}}]

...

The <tab> key will autocomplete the id that was associated the intent we just pushed. You should now see that your intent is in withdrawn statethere are no intents in the system.

Code Block
onos> intents 
id=0xffffffffe2a484dd, state=WITHDRAWN, type=HostToHostIntent, appId=org.onlab.onos.ifwd
    constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}]

This command will return nothing as there are no intents in the system.

State your intentions

One major advantage of using intents over simply using flow entries to program your network is that intents track the state of the network and reconfigure themselves in order to satisfy your intention. For example, if link were to go down the intent framework would reroute your intent (ie. your flows) onto an alternative path. But, what if there are no alternative path? Well, in this case the intent would enter the failed state and remain there until a path becomes available. Pretty cool, eh? Let's check this out in action.

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Code Block
onos> intents
id=0xffffffff8f64cf440x9, state=INSTALLED, type=HostToHostIntent, appId=org.onlab.onos.cli
    constraints=[LinkTypeConstraint{inclusive=false, types=[OPTICAL]}]

...

ONOS Graphical User Interface

First , lets reload our reactive forwarding application.

Code Block
onos> feature:uninstall onos-app-ifwd
onos> feature:uninstall onos-app-fwd

 

ONOS comes with a GUI. The GUI allows you to manipulate your network in a simple way.

First you You will need to load up the GUI bundle in ONOS, fortunately this is simple:

Code Block
onos> feature:install onos-gui

 

To open the UI simply click on the 'ONOS GUI' icon. Initially, when the UI loads up you will see your network's topology over a map of the US. You can remove the map by hitting 'b'. In fact, the UI has a cheat sheet which can be toggled by hitting '/' which is easy to remember because it's the question mark key except you don't need to hit shift. 

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Code Block
mininet> pingall
*** Ping: testing ping reachability                                                                 
h11 -> h12 h13 h14 h15 h16 h21 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h12 -> h11 h13 h14 h15 h16 h21 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h13 -> h11 h12 h14 h15 h16 h21 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h14 -> h11 h12 h13 h15 h16 h21 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h15 -> h11 h12 h13 h14 h16 h21 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h16 -> h11 h12 h13 h14 h15 h21 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h21 -> h11 h12 h13 h14 h15 h16 h22 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
h22 -> h11 h12 h13 h14 h15 h16 h21 h23 h24 h25 h26 h31 h32 h33 h34 h35 h36 h41 h42 h43 h44 h45 h46  
.....

At The hosts will not appear initially, simply type 'h' in your browser window and they will appear. At this point you should see something roughtly roughly similar to the image below. 

 

GUI Features

Summary pane

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