Welcome
Ryu controller have problem with forward packets in topology with two
links between switches. Below simple topology and logs from
controllers. Maybe you know how to solve this?
---
mininet topology
---
"""Custom topology example
Two directly connected switches plus a host for each switch:
host --- switch === switch --- host
Adding the 'topos' dict with a key/value pair to generate our newly defined
topology enables one to pass in '--topo=mytopo' from the command line.
"""
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( 's3' )
rightSwitch = self.addSwitch( 's4' )
# Add links
self.addLink( leftHost, leftSwitch )
self.addLink( leftSwitch, rightSwitch )
self.addLink( leftSwitch, rightSwitch )
self.addLink( rightSwitch, rightHost )
topos = { 'mytopo': ( lambda: MyTopo() ) }
---
mininet test ping fail
---
mininet> pingall
*** Ping: testing ping reachability
h1 -> X
h2 -> X
*** Results: 100% dropped (0/2 received)
---
ryu log
---
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 1
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 1
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 3
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 3
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 3
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 1
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 1
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 1
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 3
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
EVENT ofp_event->SimpleSwitch13 EventOFPPacketIn
packet in 3 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 3
packet in 4 9a:ba:d1:da:57:ab ff:ff:ff:ff:ff:ff 2
--
Krzysiek
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