topic RE: Simulating an Openflow controller in ExtremeWireless (General)

Simulating an Openflow controller

Arun_Samuel — Thu, 03 Mar 2016 16:44:00 GMT

is there any simulator for using Openflow controller instead of Open-Flow Switches ..if so , Pls guide me

RE: Simulating an Openflow controller

StephenW — Mon, 14 Mar 2016 21:06:00 GMT

Mininet is what everyone uses for testing with openflow nodes.

Tutorial:
https://github.com/mininet/openflow-tutorial/wiki

Video:
https://www.youtube.com/watch?v=jmlgXaocwiE

RE: Simulating an Openflow controller

Deadpool — Mon, 06 Jun 2016 09:55:00 GMT

You could also use the following:
HPE-VAN SDN Controller with Flowmaker Deluxe
Floodlight
Opendaylight
Ryu
ONOS

No idea if they work with any Extreme switches, but they work fine with PicOS and Mininet.

RE: Simulating an Openflow controller

Stephane_Grosj1 — Mon, 06 Jun 2016 09:55:00 GMT

floodlight is working, but a bit limited (at least was when I used it). Opendaylight will work too. Never tested the others.

RE: Simulating an Openflow controller

Erik_Auerswald — Mon, 06 Jun 2016 21:39:00 GMT

To test OpenFlow support of EXOS switches (with openflow.xmod and appropriate license installed) without installing a controller, one can use the "dpctl" utility from the openflow Git repository git://yuba.stanford.edu/openflow .

RE: Simulating an Openflow controller

Erik_Auerswald — Mon, 06 Jun 2016 21:39:00 GMT

Hm, dpctl cannot be used with EXOS based switches, because EXOS does not correctly configure a "passive" controller. The "passive" controller seems to listen on localhost only:
Controller : Secondary
Status : INACTIVE
Datapath ID : 00000800273d25b3
VR : VR-Mgmt
Mode : out-of-band Passive
Target : ptcp:127.0.0.1:6633
Uptime(secs) : 0
As a result dpctl cannot connect to the switch:
$ ./dpctl show tcp:192.168.42.3:6633
dpctl: talking to tcp:192.168.42.3:6633: Connection refused
$ telnet 192.168.42.3
Trying 192.168.42.3...
telnet: Unable to connect to remote host: Connection refused
$ ping -c1 192.168.42.3
PING 192.168.42.3 (192.168.42.3) 56(84) bytes of data.
64 bytes from 192.168.42.3: icmp_seq=1 ttl=64 time=1.13 ms

--- 192.168.42.3 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.135/1.135/1.135/0.000 ms
$ ssh admin@192.168.42.3 "show openflow"
admin@192.168.42.3's password:
OpenFlow: Enabled
Versions: OpenFlow10, OpenFlow13
Mode: Standard
FDB: On
Access-list width: Single

---< further output omitted >---Just tested with EXOS 21.1.1.4, which includes OpenFlow in the base image.

:-(