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Which displays the hosts' id as well as its mac address and where in the network it is connected.
Flows command
The flows command allows you to observe which flow entries are currently registered in the system. Flow entries may be in several states:
- PENDING_ADD - The flow has been submitted and forwarded to the switch.
- ADDED - The flow has been added to the switch.
- PENDING_REMOVE - The request to remove the flow has been submitted and forwarded to the switch.
- REMOVED - The rule has been removed.
So let's start some traffic but going to the mininet window and running
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mininet> h11 ping h41 |
then in the ONOS window let's run the flows command
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onos> flows |
you should see the following output
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deviceId=of:0000000000000001, flowRuleCount=1
id=30000b889cb32, state=ADDED, bytes=8722, packets=89, duration=89, priority=10, appId=org.onlab.onos.fwd
selector=[ETH_TYPE{ethType=800}, ETH_SRC{mac=00:00:00:00:00:01}, ETH_DST{mac=00:00:00:00:00:13}, IN_PORT{port=2}]
treatment=[OUTPUT{port=5}]
deviceId=of:0000000000000002, flowRuleCount=1
id=30000b889cf4d, state=ADDED, bytes=8624, packets=88, duration=88, priority=10, appId=org.onlab.onos.fwd
selector=[ETH_TYPE{ethType=800}, ETH_SRC{mac=00:00:00:00:00:13}, ETH_DST{mac=00:00:00:00:00:01}, IN_PORT{port=5}]
treatment=[OUTPUT{port=2}]
deviceId=of:000000000000000b, flowRuleCount=2
id=30000b88a8321, state=ADDED, bytes=8722, packets=89, duration=89, priority=10, appId=org.onlab.onos.fwd
selector=[ETH_TYPE{ethType=800}, ETH_SRC{mac=00:00:00:00:00:13}, ETH_DST{mac=00:00:00:00:00:01}, IN_PORT{port=2}]
treatment=[OUTPUT{port=3}]
id=30000b88a833e, state=ADDED, bytes=8722, packets=89, duration=89, priority=10, appId=org.onlab.onos.fwd
selector=[ETH_TYPE{ethType=800}, ETH_SRC{mac=00:00:00:00:00:01}, ETH_DST{mac=00:00:00:00:00:13}, IN_PORT{port=3}]
treatment=[OUTPUT{port=1}]
deviceId=of:000000000000000c, flowRuleCount=0
deviceId=of:000000000000000d, flowRuleCount=0
deviceId=of:000000000000000e, flowRuleCount=2
id=30000b88a8e45, state=ADDED, bytes=8722, packets=89, duration=89, priority=10, appId=org.onlab.onos.fwd
selector=[ETH_TYPE{ethType=800}, ETH_SRC{mac=00:00:00:00:00:01}, ETH_DST{mac=00:00:00:00:00:13}, IN_PORT{port=1}]
treatment=[OUTPUT{port=3}]
id=30000b88a8e82, state=ADDED, bytes=8722, packets=89, duration=89, priority=10, appId=org.onlab.onos.fwd
selector=[ETH_TYPE{ethType=800}, ETH_SRC{mac=00:00:00:00:00:13}, ETH_DST{mac=00:00:00:00:00:01}, IN_PORT{port=3}]
treatment=[OUTPUT{port=2}] |
As you can see from the above output, ONOS provides many details about he the flows at the switches. For example each flow entry defines a selector and treatment which is the set of traffic matched by the the flow entry and how this traffic should be handled. Notice as well that each flow entry it tagged by an appId (application id), this appId identifies which application installed this flow entry. This is a useful feature because it can help an admin identify which application may be misbehaving or consuming many resources.
Apps command
The apps command enables the user to list the applications currently running on ONOS.
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onos> apps
id=0, name=org.onlab.onos.net.intent
id=1, name=org.onlab.onos.fwd
id=2, name=org.onlab.onos.gui |
As shown above the tutorial ONOS has three applications loaded. One of them is the reactive forwarding applications, we will see the other two later in this tutorial.
Paths command