VTN_recompute_path_on_failure

Mininet script
gvrangan@openstack-controlnode:~$ cat path_test.py 
#!/usr/bin/python
from mininet.topo import Topo
class MyTopo( Topo ):
   "Simple topology example."
   def __init__( self ):
       "Create custom topo."
       # Initialize topology
       Topo.__init__( self )
       # Add hosts and switches
       leftHost = self.addHost( 'h1' )
       rightHost = self.addHost( 'h2' )
       leftSwitch = self.addSwitch( 's1' )
       middleSwitch = self.addSwitch( 's2' )
       middleSwitch2 = self.addSwitch( 's4' )
       rightSwitch = self.addSwitch( 's3' )
       pathSwitch = self.addSwitch( 's5' )
       # Add links
       self.addLink( leftHost, leftSwitch )
       self.addLink( leftSwitch, middleSwitch )
       self.addLink( leftSwitch, middleSwitch2 )
       self.addLink( middleSwitch, pathSwitch )
       self.addLink( pathSwitch, rightSwitch )
       self.addLink( middleSwitch2, rightSwitch )
       self.addLink( rightSwitch, rightHost )
topos = { 'mytopo': ( lambda: MyTopo() ) }


Launch VTN Manager in KAraf

1. Created the below VTN configuration

2. ngan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ curl --user "admin":"admin" -H "Content-type: application/json" -X POST \
> http://localhost:8181/restconf/operations/vtn:update-vtn \
> -d '{"input":{"tenant-name":"vtn1"}}'
{"output":{"status":"CREATED"}}gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ curl --user "admin":"admin" -H "Content-type: application/json" -X POST \
> http://localhost:8181/restconf/operations/vtn-vbridge:update-vbridge \
> -d '{"input":{"tenant-name":"vtn1", "bridge-name":"vbr1"}}'
{"output":{"status":"CREATED"}}gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ curl --user "admin":"admin" -H "Content-type: application/json" -X POST \
> http://localhost:8181/restconf/operations/vtn-vinterface:update-vinterface \
> -d '{"input":{"tenant-name":"vtn1", "bridge-name":"vbr1", "interface-name":"if1"}}'
{"output":{"status":"CREATED"}}gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ curl --user "admin":"admin" -H "Content-type: application/json" -X POST \
> http://localhost:8181/restconf/operations/vtn-vinterface:update-vinterface \
> -d '{"input":{"tenant-name":"vtn1", "bridge-name":"vbr1", "interface-name":"if2"}}'
{"output":{"status":"CREATED"}}gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ curl --user "admin":"admin" -H "Content-type: application/json" -X POST \
> http://localhost:8181/restconf/operations/vtn-port-map:set-port-map \
> -d '{"input":{"tenant-name":"vtn1", "bridge-name":"vbr1", "interface-name":"if1", "node":"openflow:1", "port-name":"s1-eth1"}}'
{"output":{"status":"CREATED"}}gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ 
gvrangan@odl-dev1:~$ curl --user "admin":"admin" -H "Content-type: application/json" -X POST \
> http://localhost:8181/restconf/operations/vtn-port-map:set-port-map \
> -d '{"input":{"tenant-name":"vtn1", "bridge-name":"vbr1", "interface-name":"if2", "node":"openflow:3", "port-name":"s3-eth3"}}'
{"output":{"status":"CREATED"}}gvrangan@odl-dev1:~$ 

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Tried ping and the flow entries were installed

mininet> dpctl dump-flows
*** s1 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=756.474s, table=0, n_packets=304, n_bytes=25810, idle_age=4, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000001, duration=182.224s, table=0, n_packets=2, n_bytes=140, idle_age=177, priority=10,in_port=3,vlan_tci=0x0000/0x1fff,dl_src=72:37:af:cb:f4:49,dl_d
st=72:c8:a4:9e:9e:69 actions=output:1
 cookie=0x7f56000000000002, duration=182.216s, table=0, n_packets=2, n_bytes=140, idle_timeout=300, idle_age=177, priority=10,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=72:c
8:a4:9e:9e:69,dl_dst=72:37:af:cb:f4:49 actions=output:3
*** s2 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=750.451s, table=0, n_packets=300, n_bytes=25500, idle_age=4, priority=0 actions=CONTROLLER:65535
*** s3 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=745.707s, table=0, n_packets=300, n_bytes=25470, idle_age=4, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000001, duration=182.222s, table=0, n_packets=2, n_bytes=140, idle_timeout=300, idle_age=177, priority=10,in_port=3,vlan_tci=0x0000/0x1fff,dl_src=72:3
7:af:cb:f4:49,dl_dst=72:c8:a4:9e:9e:69 actions=output:2
 cookie=0x7f56000000000002, duration=182.221s, table=0, n_packets=2, n_bytes=140, idle_age=177, priority=10,in_port=2,vlan_tci=0x0000/0x1fff,dl_src=72:c8:a4:9e:9e:69,dl_d
st=72:37:af:cb:f4:49 actions=output:3
*** s4 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=740.973s, table=0, n_packets=296, n_bytes=25160, idle_age=4, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000002, duration=182.223s, table=0, n_packets=2, n_bytes=140, idle_age=177, priority=10,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=72:c8:a4:9e:9e:69,dl_d
st=72:37:af:cb:f4:49 actions=output:2
 cookie=0x7f56000000000001, duration=182.230s, table=0, n_packets=2, n_bytes=140, idle_age=177, priority=10,in_port=2,vlan_tci=0x0000/0x1fff,dl_src=72:37:af:cb:f4:49,dl_d
st=72:c8:a4:9e:9e:69 actions=output:1
*** s5 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=736.050s, table=0, n_packets=294, n_bytes=24990, idle_age=4, priority=0 actions=CONTROLLER:65535
mininet> 
mininet> h1 ping h2

---------------

mininet> link s4 s3 down
mininet> 
mininet> 
mininet> h1 ping h2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=14.7 ms
64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.434 ms
64 bytes from 10.0.0.2: icmp_seq=3 ttl=64 time=0.096 ms
^C
--- 10.0.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 0.096/5.106/14.788/6.847 ms
mininet> dpctl dump-flows
*** s1 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=955.872s, table=0, n_packets=386, n_bytes=32750, idle_age=3, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000003, duration=6.078s, table=0, n_packets=3, n_bytes=238, idle_timeout=300, idle_age=1, priority=10,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=72:c8:a4
:9e:9e:69,dl_dst=72:37:af:cb:f4:49 actions=output:2
 cookie=0x7f56000000000004, duration=6.074s, table=0, n_packets=3, n_bytes=238, idle_age=1, priority=10,in_port=2,vlan_tci=0x0000/0x1fff,dl_src=72:37:af:cb:f4:49,dl_dst=7
2:c8:a4:9e:9e:69 actions=output:1
*** s2 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=949.849s, table=0, n_packets=380, n_bytes=32300, idle_age=3, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000003, duration=6.083s, table=0, n_packets=3, n_bytes=238, idle_age=1, priority=10,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=72:c8:a4:9e:9e:69,dl_dst=7
2:37:af:cb:f4:49 actions=output:2
 cookie=0x7f56000000000004, duration=6.077s, table=0, n_packets=3, n_bytes=238, idle_age=1, priority=10,in_port=2,vlan_tci=0x0000/0x1fff,dl_src=72:37:af:cb:f4:49,dl_dst=7
2:c8:a4:9e:9e:69 actions=output:1
*** s3 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=945.105s, table=0, n_packets=380, n_bytes=32240, idle_age=3, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000003, duration=6.085s, table=0, n_packets=3, n_bytes=238, idle_age=1, priority=10,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=72:c8:a4:9e:9e:69,dl_dst=7
2:37:af:cb:f4:49 actions=output:3
 cookie=0x7f56000000000004, duration=6.072s, table=0, n_packets=3, n_bytes=238, idle_timeout=300, idle_age=1, priority=10,in_port=3,vlan_tci=0x0000/0x1fff,dl_src=72:37:af
:cb:f4:49,dl_dst=72:c8:a4:9e:9e:69 actions=output:1
*** s4 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=940.371s, table=0, n_packets=374, n_bytes=31790, idle_age=3, priority=0 actions=CONTROLLER:65535
*** s5 ------------------------------------------------------------------------
NXST_FLOW reply (xid=0x4):
 cookie=0x0, duration=935.447s, table=0, n_packets=374, n_bytes=31790, idle_age=3, priority=0 actions=CONTROLLER:65535
 cookie=0x7f56000000000003, duration=6.088s, table=0, n_packets=3, n_bytes=238, idle_age=1, priority=10,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=72:c8:a4:9e:9e:69,dl_dst=7
2:37:af:cb:f4:49 actions=output:2
 cookie=0x7f56000000000004, duration=6.082s, table=0, n_packets=3, n_bytes=238, idle_age=1, priority=10,in_port=2,vlan_tci=0x0000/0x1fff,dl_src=72:37:af:cb:f4:49,dl_dst=7
2:c8:a4:9e:9e:69 actions=output:1

---------