Simulating an Openflow controller

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

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Posted 3 years ago

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Stephen Williams, Employee

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Mininet is what everyone uses for testing with openflow nodes. 


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You could also use the following:
 HPE-VAN SDN Controller with Flowmaker Deluxe

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

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

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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:// .
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Erik Auerswald, Embassador

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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
Datapath ID : 00000800273d25b3
VR : VR-Mgmt
Mode : out-of-band Passive
Target : ptcp:
Uptime(secs) : 0
As a result dpctl cannot connect to the switch:
$ ./dpctl show tcp:
dpctl: talking to tcp: Connection refused
$ telnet
telnet: Unable to connect to remote host: Connection refused
$ ping -c1
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=64 time=1.13 ms

--- 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@ "show openflow"
admin@'s password:
OpenFlow: Enabled
Versions: OpenFlow10, OpenFlow13
Mode: Standard
Access-list width: Single

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