OpenFlow/OpenFlow Tutorial 1
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[[labs.beatcraft.com]]~
[[OpenFlow]]~
#contents
* OpenFlow/OpenFlow Tutorial 1 [#b16df4b4]
>
To understand the overview of OpenFlow, replicate the tut...
~
[[http://www.openflow.org/wk/index.php/OpenFlow_Tutorial#...
** Creating a virtual network environment [#hf85599d]
>
To use mininet, create a virtual network environment. The...
#ref(mininet.jpg,,55%)~
>
To start the virtual network, apply the command shown bel...
$ sudo mn --topo single,3 --mac --switch ovsk --controll...
*** Creating network
*** Adding controller
Unable to contact the remote controller at 127.0.0.1:6633
*** Adding hosts:
h1 h2 h3
*** Adding switches:
s1
*** Adding links:
(h1, s1) (h2, s1) (h3, s1)
*** Configuring hosts
h1 h2 h3
*** Starting controller
*** Starting 1 switches
s1
*** Starting CLI:
mininet>
>
Using these commands, three virtual hosts (h1, h2, and h3...
~
To apply a mininet-specific command, nodes, check the lis...
mininet> nodes
available nodes are:
h2 h3 h1 s1 c0
~
To check the IP of a virtual host and switch, the detail ...
>
- h1
>
mininet> h1 ifconfig
h1-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:01
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
-h2
>
mininet> h2 ifconfig
h2-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:02
inet addr:10.0.0.2 Bcast:10.255.255.255 Mask...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 Overruns:0 fra...
TX packets:0 errors:0 dropped:0 Overruns:0 car...
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
-h3
>
mininet> h3 ifconfig
h3-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:03
inet addr:10.0.0.3 Bcast:10.255.255.255 Mask...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
-s1
>
mininet> s1 ifconfig
eth0 Link encap:Ethernet HWaddr 00:23:8b:56:f9:ed
inet addr:192.168.0.146 Bcast:192.168.0.255 ...
inet6 addr: 2001:268:321:8000:223:8bff:fe56:f9...
inet6 addr: fe80::223:8bff:fe56:f9ed/64 Scope:...
inet6 addr: 2001:268:321:8000:4c96:18c9:b0b1:b...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:4906 errors:0 dropped:0 overruns:0 ...
TX packets:670 errors:0 dropped:0 overruns:0 c...
collisions:0 txqueuelen:1000
RX bytes:589463 (589.4 KB) TX bytes:78711 (78...
Interrupt:16
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:876 errors:0 dropped:0 Overruns:0 f...
TX packets:876 errors:0 dropped:0 Overruns:0 c...
collisions:0 txqueuelen:0
RX bytes:58056 (58.0 KB) TX bytes:58056 (58.0...
s1-eth1 Link encap:Ethernet HWaddr d6:7e:38:49:0f:3d
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
s1-eth2 Link encap:Ethernet HWaddr 9e:62:1c:ea:62:0e
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 Overruns:0 fra...
TX packets:0 errors:0 dropped:0 Overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
s1-eth3 Link encap:Ethernet HWaddr da:ab:31:04:07:d6
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
** Example of how to use dpctl [#ue6de687]
>
Once mininet boots, execute dpctl by a different Shell. ...
~
To execute show, connect OpenFlow switch and show the pre...
>
$ dpctl show tcp:127.0.0.1:6634
features_reply (xid=0x77393f77): ver:0x1, dpid:1
n_tables:255, n_buffers:256
features: capabilities:0xc7, actions:0xfff
1(s1-eth1): addr:d6:7e:38:49:0f:3d, config: 0, state:0
current: 10GB-FD COPPER
2(s1-eth2): addr:9e:62:1c:ea:62:0e, config: 0, state:0
current: 10GB-FD COPPER
3(s1-eth3): addr:da:ab:31:04:07:d6, config: 0, state:0
current: 10GB-FD COPPER
LOCAL(s1): addr:de:5f:fc:4b:49:4a, config: 0x1, state:0x1
get_config_reply (xid=0x85b71d0d): miss_send_len=0
>
To execute dump-flows, display the present status of a ta...
>
$ dpctl dump-flows tcp:127.0.0.1:6634
stats_reply (xid=0x265ded5c): flags=none type=1(flow)
>
Since OpenFlow Controller has not worked, its flow table ...
~
At the mininet console, try to send a ping from h1 to h2.~
>
mininet> h1 ping -c3 h2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
From 10.0.0.1 icmp_seq=1 Destination Host Unreachable
From 10.0.0.1 icmp_seq=2 Destination Host Unreachable
From 10.0.0.1 icmp_seq=3 Destination Host Unreachable
--- 10.0.0.2 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packe...
pipe 3
>
Since The table flow of the switch is still empty and the...
~
Then, to use dpctl command, add flows.~
>
$ dpctl add-flow tcp:127.0.0.1:6634 in_port=1,actions=ou...
$ dpctl add-flow tcp:127.0.0.1:6634 in_port=2,actions=ou...
>
To use the console, check the flow table.~
>
$ dpctl dump-flows tcp:127.0.0.1:6634
stats_reply (xid=0x2fbc71b7): flags=none type=1(flow)
cookie=0, duration_sec=14s, duration_nsec=964000000s, ...
cookie=0, duration_sec=8s, duration_nsec=934000000s, t...
>
Then, try to send a ping again.~
>
mininet> h1 ping -c3 h2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_req=1 ttl=64 time=1.39 ms
64 bytes from 10.0.0.2: icmp_req=2 ttl=64 time=0.132 ms
64 bytes from 10.0.0.2: icmp_req=3 ttl=64 time=0.140 ms
--- 10.0.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time ...
rtt min/avg/max/mdev = 0.132/0.557/1.399/0.595 ms
>
To use add-flow, configure to send a packet from port1 to...
>
mininet> h2 ping -c3 h1
PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_req=1 ttl=64 time=0.711 ms
64 bytes from 10.0.0.1: icmp_req=2 ttl=64 time=0.128 ms
64 bytes from 10.0.0.1: icmp_req=3 ttl=64 time=0.135 ms
--- 10.0.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time ...
rtt min/avg/max/mdev = 0.128/0.324/0.711/0.273 ms
>
After sending a ping, check the condition of the flow tab...
>
$ dpctl dump-flows tcp:127.0.0.1:6634
stats_reply (xid=0x35d81496): flags=none type=1(flow)
cookie=0, duration_sec=21s, duration_nsec=123000000s, ...
cookie=0, duration_sec=19s, duration_nsec=312000000s, ...
>
The connection time, packets, and bytes are increased.~
* Revision History [#mf04d0ad]
>
- 2013/08/28 This article is initially uploaded.
End:
[[labs.beatcraft.com]]~
[[OpenFlow]]~
#contents
* OpenFlow/OpenFlow Tutorial 1 [#b16df4b4]
>
To understand the overview of OpenFlow, replicate the tut...
~
[[http://www.openflow.org/wk/index.php/OpenFlow_Tutorial#...
** Creating a virtual network environment [#hf85599d]
>
To use mininet, create a virtual network environment. The...
#ref(mininet.jpg,,55%)~
>
To start the virtual network, apply the command shown bel...
$ sudo mn --topo single,3 --mac --switch ovsk --controll...
*** Creating network
*** Adding controller
Unable to contact the remote controller at 127.0.0.1:6633
*** Adding hosts:
h1 h2 h3
*** Adding switches:
s1
*** Adding links:
(h1, s1) (h2, s1) (h3, s1)
*** Configuring hosts
h1 h2 h3
*** Starting controller
*** Starting 1 switches
s1
*** Starting CLI:
mininet>
>
Using these commands, three virtual hosts (h1, h2, and h3...
~
To apply a mininet-specific command, nodes, check the lis...
mininet> nodes
available nodes are:
h2 h3 h1 s1 c0
~
To check the IP of a virtual host and switch, the detail ...
>
- h1
>
mininet> h1 ifconfig
h1-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:01
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
-h2
>
mininet> h2 ifconfig
h2-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:02
inet addr:10.0.0.2 Bcast:10.255.255.255 Mask...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 Overruns:0 fra...
TX packets:0 errors:0 dropped:0 Overruns:0 car...
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
-h3
>
mininet> h3 ifconfig
h3-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:03
inet addr:10.0.0.3 Bcast:10.255.255.255 Mask...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
-s1
>
mininet> s1 ifconfig
eth0 Link encap:Ethernet HWaddr 00:23:8b:56:f9:ed
inet addr:192.168.0.146 Bcast:192.168.0.255 ...
inet6 addr: 2001:268:321:8000:223:8bff:fe56:f9...
inet6 addr: fe80::223:8bff:fe56:f9ed/64 Scope:...
inet6 addr: 2001:268:321:8000:4c96:18c9:b0b1:b...
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:4906 errors:0 dropped:0 overruns:0 ...
TX packets:670 errors:0 dropped:0 overruns:0 c...
collisions:0 txqueuelen:1000
RX bytes:589463 (589.4 KB) TX bytes:78711 (78...
Interrupt:16
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:876 errors:0 dropped:0 Overruns:0 f...
TX packets:876 errors:0 dropped:0 Overruns:0 c...
collisions:0 txqueuelen:0
RX bytes:58056 (58.0 KB) TX bytes:58056 (58.0...
s1-eth1 Link encap:Ethernet HWaddr d6:7e:38:49:0f:3d
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
s1-eth2 Link encap:Ethernet HWaddr 9e:62:1c:ea:62:0e
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 Overruns:0 fra...
TX packets:0 errors:0 dropped:0 Overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
s1-eth3 Link encap:Ethernet HWaddr da:ab:31:04:07:d6
UP BROADCAST RUNNING MULTICAST MTU:1500 Metr...
RX packets:0 errors:0 dropped:0 overruns:0 fra...
TX packets:0 errors:0 dropped:0 overruns:0 car...
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
** Example of how to use dpctl [#ue6de687]
>
Once mininet boots, execute dpctl by a different Shell. ...
~
To execute show, connect OpenFlow switch and show the pre...
>
$ dpctl show tcp:127.0.0.1:6634
features_reply (xid=0x77393f77): ver:0x1, dpid:1
n_tables:255, n_buffers:256
features: capabilities:0xc7, actions:0xfff
1(s1-eth1): addr:d6:7e:38:49:0f:3d, config: 0, state:0
current: 10GB-FD COPPER
2(s1-eth2): addr:9e:62:1c:ea:62:0e, config: 0, state:0
current: 10GB-FD COPPER
3(s1-eth3): addr:da:ab:31:04:07:d6, config: 0, state:0
current: 10GB-FD COPPER
LOCAL(s1): addr:de:5f:fc:4b:49:4a, config: 0x1, state:0x1
get_config_reply (xid=0x85b71d0d): miss_send_len=0
>
To execute dump-flows, display the present status of a ta...
>
$ dpctl dump-flows tcp:127.0.0.1:6634
stats_reply (xid=0x265ded5c): flags=none type=1(flow)
>
Since OpenFlow Controller has not worked, its flow table ...
~
At the mininet console, try to send a ping from h1 to h2.~
>
mininet> h1 ping -c3 h2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
From 10.0.0.1 icmp_seq=1 Destination Host Unreachable
From 10.0.0.1 icmp_seq=2 Destination Host Unreachable
From 10.0.0.1 icmp_seq=3 Destination Host Unreachable
--- 10.0.0.2 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packe...
pipe 3
>
Since The table flow of the switch is still empty and the...
~
Then, to use dpctl command, add flows.~
>
$ dpctl add-flow tcp:127.0.0.1:6634 in_port=1,actions=ou...
$ dpctl add-flow tcp:127.0.0.1:6634 in_port=2,actions=ou...
>
To use the console, check the flow table.~
>
$ dpctl dump-flows tcp:127.0.0.1:6634
stats_reply (xid=0x2fbc71b7): flags=none type=1(flow)
cookie=0, duration_sec=14s, duration_nsec=964000000s, ...
cookie=0, duration_sec=8s, duration_nsec=934000000s, t...
>
Then, try to send a ping again.~
>
mininet> h1 ping -c3 h2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_req=1 ttl=64 time=1.39 ms
64 bytes from 10.0.0.2: icmp_req=2 ttl=64 time=0.132 ms
64 bytes from 10.0.0.2: icmp_req=3 ttl=64 time=0.140 ms
--- 10.0.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time ...
rtt min/avg/max/mdev = 0.132/0.557/1.399/0.595 ms
>
To use add-flow, configure to send a packet from port1 to...
>
mininet> h2 ping -c3 h1
PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_req=1 ttl=64 time=0.711 ms
64 bytes from 10.0.0.1: icmp_req=2 ttl=64 time=0.128 ms
64 bytes from 10.0.0.1: icmp_req=3 ttl=64 time=0.135 ms
--- 10.0.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time ...
rtt min/avg/max/mdev = 0.128/0.324/0.711/0.273 ms
>
After sending a ping, check the condition of the flow tab...
>
$ dpctl dump-flows tcp:127.0.0.1:6634
stats_reply (xid=0x35d81496): flags=none type=1(flow)
cookie=0, duration_sec=21s, duration_nsec=123000000s, ...
cookie=0, duration_sec=19s, duration_nsec=312000000s, ...
>
The connection time, packets, and bytes are increased.~
* Revision History [#mf04d0ad]
>
- 2013/08/28 This article is initially uploaded.
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