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Segment routing device setting:

Code Block

title	device config
linenumbers	true

"Device-id" :

...

 {
    "segmentrouting" :

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 {
        "name" : "Device name",

...


        "ipv4NodeSid" : 123,

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        "ipv4Loopback" : "192.168.0.123",

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        "ipv6NodeSid" : 223,

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        "ipv6Loopback" : "2000::c0a8:0223",

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        "routerMac" : "00:00:00:00:01:23",

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        "isEdgeRouter" : true,

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        "adjacencySids" : []

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}

}
}

In segment routing config:

Name: name for segment routing device
ipv4(6)NodeSid: global unique id for IP loopback, which used for MPLS lable in forwarding
ipv4(6)Loopback: Router loopback IP address, should not be part of same same subnet defined on dataplace interface
routerMac: Globally unique mac address this mac address will be used to reply ARP request for router IP or interface IP
isEdgeRouter: true if this device is edge/leaf, otherwise false
adjacencySids: Reserved, put empty array for now

Interface config:

Code Block

title	Interface config

"Device-id/port-number" :

...

 {
    "interfaces" :

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{

...

 [
        {
            "name": "interface name",

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            "ips" : [ "10.0.1.254/24" ],

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            "vlan-untagged":

...

}

]

In interface config:

Name: interface name, can be empty or unset
ips: IP address for this interface, can be the default gateway of the host
VLAN config:

vlan-untagged (integer): this interface consumes untagged packet only, and this interface belongs to specific vlan
vlan-tagged (integer array): this interface can consumes specific tagged vlans
vlan-native (integer): if an untagged consumes by this port, and this is an interface with vlan-tagged setup, device will use this vlan for internal use
vlan config can be: vlan-untagged only, vlan-tagged only or vlan-tagged + vlan-native

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Start ONOS with following command

Code Block

language	bash

$ cd ~/onos

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$ ok clean

Use another terminal, connect to ONOS shell and activate follow apps:

Code Block

language	bash

$ onos localhost

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onos> app activate bmv2 fabric hostprovider lldpprovider proxyarp segmentrouting

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onos> apps -a -s

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*   9 org.onosproject.drivers

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              1.13.0.SNAPSHOT Default Drivers

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*  35 org.onosproject.generaldeviceprovider 1.13.0.SNAPSHOT General Device Provider

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*  36 org.onosproject.protocols.grpc

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       1.13.0.SNAPSHOT gRPC Protocol Subsystem

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*  37 org.onosproject.protocols.p4runtime

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  1.13.0.SNAPSHOT P4Runtime Protocol Subsystem

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*  38 org.onosproject.p4runtime

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            1.13.0.SNAPSHOT P4Runtime Provider

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*  39 org.onosproject.drivers.p4runtime

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    1.13.0.SNAPSHOT P4Runtime Drivers

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*  42 org.onosproject.proxyarp

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             1.13.0.SNAPSHOT Proxy ARP/NDP

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*  44 org.onosproject.hostprovider

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         1.13.0.SNAPSHOT Host Location Provider

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*  45 org.onosproject.lldpprovider

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         1.13.0.SNAPSHOT LLDP Link Provider

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*  73 org.onosproject.pipelines.basic

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      1.13.0.SNAPSHOT Basic Pipelines

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*  84 org.onosproject.route-service

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        1.13.0.SNAPSHOT Route Service Server

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*  95 org.onosproject.protocols.gnmi

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       1.13.0.SNAPSHOT gNMI Protocol Subsystem

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*  96 org.onosproject.drivers.gnmi

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         1.13.0.SNAPSHOT gNMI Drivers

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* 108 org.onosproject.pipelines.fabric

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     1.13.0.SNAPSHOT Fabric Pipeline

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* 120 org.onosproject.segmentrouting

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       1.13.0.SNAPSHOT Segment Routing

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* 121 org.onosproject.drivers.bmv2

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         1.13.0.SNAPSHOT BMv2 Drivers

Push network configuration from another new terminal window

Code Block

language	bash

$ cd ~/routing/trellis

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$ onos-netcfg localhost trellisp4.json

(Optional) Decrease flow and group polling time

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We can manually setup polling frequency in ONOS shell so ONOS can poll flow entries and groups from devices more frequently. (default: 30 seconds)

Code Block
onos> cfg set org.onosproject.net.flow.impl.FlowRuleManager fallbackFlowPollFrequency 5

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onos> cfg set org.onosproject.net.group.impl.GroupManager fallbackGroupPollFrequency 5

Strat mininet topology on new terminal using trellisp4.py python script
trellisp4.py creates:

2 by 2 leaf-spine topology using 4 bmv2 devices
4 bidirectional links between leaf and spine
4 hosts, 2 hosts per leaf device

Code Block
$ sudo -E ./trellisp4.py --onos-ip 127.0.0.1

After started, ONOS should discover 4 devices and 8 links

Code Block
onos> devices -s

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id=device:bmv2:204, available=true, role=MASTER, type=SWITCH, driver=bmv2:org.onosproject.pipelines.fabric

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id=device:bmv2:205, available=true, role=MASTER, type=SWITCH, driver=bmv2:org.onosproject.pipelines.fabric

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id=device:bmv2:226, available=true, role=MASTER, type=SWITCH, driver=bmv2:org.onosproject.pipelines.fabric

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id=device:bmv2:227, available=true, role=MASTER, type=SWITCH, driver=bmv2:org.onosproject.pipelines.fabric

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onos> links

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src=device:bmv2:204/1, dst=device:bmv2:226/1, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:204/2, dst=device:bmv2:227/1, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:205/1, dst=device:bmv2:226/2, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:205/2, dst=device:bmv2:227/2, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:226/1, dst=device:bmv2:204/1, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:226/2, dst=device:bmv2:205/1, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:227/1, dst=device:bmv2:204/2, type=DIRECT, state=ACTIVE, expected=false

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src=device:bmv2:227/2, dst=device:bmv2:205/2, type=DIRECT, state=ACTIVE, expected=false

Hosts should be learnt learned by ONOS

Code Block
onos> hosts

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id=00:AA:00:00:00:01/None,
 mac=00:AA:00:00:00:01, locations=[device:bmv2:204/3], vlan=None, ip(s)=[10.0.2.1], provider=of:org.onosproject.provider.host, 
configured=false

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id=00:AA:00:00:00:02/None,
 mac=00:AA:00:00:00:02, locations=[device:bmv2:204/4], vlan=None, ip(s)=[10.0.2.2], provider=of:org.onosproject.provider.host, 
configured=false

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id=00:AA:00:00:00:03/None,
 mac=00:AA:00:00:00:03, locations=[device:bmv2:205/3], vlan=None, ip(s)=[10.0.3.1], provider=of:org.onosproject.provider.host, 
configured=false

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id=00:AA:00:00:00:04/None,
 mac=00:AA:00:00:00:04, locations=[device:bmv2:205/4], vlan=None, ip(s)=[10.0.3.2], provider=of:org.onosproject.provider.host,  configured=false

If any host was not discovered by ONOS, try send arp request by using arping tool from mininet shell:

Code Block
mininet> h1 arping 10.0.2.254

Routing and bridging rule should be installed by ONOS after host been detected and hosts should be able to ping each other:

Code Block
mininet> pingallfull

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<...skip debug logs...>

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*** Results:

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 h1->h2: 1/1, rtt min/avg/max/mdev 1.267/1.267/1.267/0.000 ms

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 h1->h3: 1/1, rtt min/avg/max/mdev 3.384/3.384/3.384/0.000 ms

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 h1->h4: 1/1, rtt min/avg/max/mdev 4.708/4.708/4.708/0.000 ms

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 h2->h1: 1/1, rtt min/avg/max/mdev 1.381/1.381/1.381/0.000 ms

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 h2->h3: 1/1, rtt min/avg/max/mdev 3.138/3.138/3.138/0.000 ms

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 h2->h4: 1/1, rtt min/avg/max/mdev 3.983/3.983/3.983/0.000 ms

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 h3->h1: 1/1, rtt min/avg/max/mdev 3.446/3.446/3.446/0.000 ms

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 h3->h2: 1/1, rtt min/avg/max/mdev 3.315/3.315/3.315/0.000 ms

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 h3->h4: 1/1, rtt min/avg/max/mdev 1.388/1.388/1.388/0.000 ms

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 h4->h1: 1/1, rtt min/avg/max/mdev 3.345/3.345/3.345/0.000 ms

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 h4->h2: 1/1, rtt min/avg/max/mdev 4.479/4.479/4.479/0.000 ms

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 h4->h3: 1/1, rtt min/avg/max/mdev 1.302/1.302/1.302/0.000 ms

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mininet>

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