Mininet (lightweight software defined network and test platform) II

Mininet-2 Perform regression testing mn --test

The --test established topology can be tested by

pingpairYou can test whether the connection between the hosts is normal (Ping between first, useful for testing)

[email protected]:~# mn --test pingpair*** Creating network*** Adding controller*** Adding hosts:h1 h2 *** Adding switches:s1 *** Adding links:(h1, s1) (h2, s1) *** Configuring hostsh1 h2 *** Starting controllerc0 *** Starting 1 switchess1 ...*** Waiting for switches to connects1 h1 -> h2 h2 -> h1 *** Results: 0% dropped (2/2 received)*** Stopping 1 controllersc0 *** Stopping 2 links..*** Stopping 1 switchess1 *** Stopping 2 hostsh1 h2 *** Donecompleted in 5.681 seconds

iperf(Simple iperf TCP test between, optionally specified) hosts. Usage:iperf Node1 Node2)

[email protected]:~# mn --test iperf*** Creating network*** Adding controller*** Adding hosts:h1 h2 *** Adding switches:s1 *** Adding links:(h1, s1) (h2, s1) *** Configuring hostsh1 h2 *** Starting controllerc0 *** Starting 1 switchess1 ...*** Waiting for switches to connects1 *** Iperf: testing TCP bandwidth between h1 and h2 .*** Results: [‘36.3 Gbits/sec‘, ‘36.3 Gbits/sec‘]*** Stopping 1 controllersc0 *** Stopping 2 links..*** Stopping 1 switchess1 *** Stopping 2 hostsh1 h2 *** Donecompleted in 10.987 seconds

Adjust the topology with parameters --topo

--topo=TOPO           linear|minimal|reversed|single|torus|tree[,param=value                        ...] linear=LinearTopo torus=TorusTopo tree=TreeTopo                        single=SingleSwitchTopo                        reversed=SingleSwitchReversedTopo minimal=MinimalTopo

Single

Single refers to the individual, this type of topology only a switch, and the number of hosts can be arbitrarily assigned, extension Piao star type

[email protected]:~# mn --topo=single,3*** Creating network*** Adding controller*** Adding hosts:h1 h2 h3 *** Adding switches:s1 *** Adding links:(h1, s1) (h2, s1) (h3, s1) *** Configuring hostsh1 h2 h3 *** Starting controllerc0 *** Starting 1 switchess1 ...*** Starting CLI:mininet> neth1 h1-eth0:s1-eth1h2 h2-eth0:s1-eth2h3 h3-eth0:s1-eth3s1 lo:  s1-eth1:h1-eth0 s1-eth2:h2-eth0 s1-eth3:h3-eth0c0

Linear

Linear refers to a straight line, a switch with a host, and the number of hosts and switches can be arbitrarily specified, the topology shape into a straight type

[email protected]:~# mn --topo=linear,3*** Creating network*** Adding controller*** Adding hosts:h1 h2 h3 *** Adding switches:s1 s2 s3 *** Adding links:(h1, s1) (h2, s2) (h3, s3) (s2, s1) (s3, s2) *** Configuring hostsh1 h2 h3 *** Starting controllerc0 *** Starting 3 switchess1 s2 s3 ...*** Starting CLI:mininet> neth1 h1-eth0:s1-eth1h2 h2-eth0:s2-eth1h3 h3-eth0:s3-eth1s1 lo:  s1-eth1:h1-eth0 s1-eth2:s2-eth2s2 lo:  s2-eth1:h2-eth0 s2-eth2:s1-eth2 s2-eth3:s3-eth2s3 lo:  s3-eth1:h3-eth0 s3-eth2:s2-eth3c0

Tree

Tree refers to trees, such as the shape of the topology of the tree, the switch into a tree-like scattered, the bottom layer of the tree to hang two hosts

  [email protected]:~# mn--topo=tree,3*** Creating network*** Adding controller*** Adding hosts:h1 H2 H3 h 4 h5 h6 H7 H8 * * * Adding SWITCHES:S1 S2 S3 S4 S5 S6 S7 * * * Adding Links: (S1, S2) (S1, S5) (S2, S3) (S2, S4) (S3, H1) S3, H2 (S4, H3) (S4, H4) (S5, S6) (S5, S7) (S6, H5) (S6, H6) (S7, H7) * * S7 H8 Configuring HOSTSH1 H2 H3 h4 h5 h6 * * * Starting CONTROLLERC0 * * * Starting 7 SWITCHESS1 S2 S3 S4 S5 S6 S7 ... * * * starting cli:mininet> neth1 h1-eth0:s3-eth1 H2 h2-eth0:s3-eth2h3 h3-eth0:s4-eth1h4 h4-eth0:s4-eth2h5 h5-eth0:s6-eth1h6 h6-eth0:s6-eth2h7 h7-eth0:s7-eth1h8 h8-eth0:s7-eth2s1 lo:s1-eth1:s2-eth3 s1-eth2:s5-eth3s2 lo:s2-eth1:s3-eth3 s2-eth2:s4-eth3 s2-eth3:s1-eth1s3 lo:s3-et H1:h1-eth0 s3-eth2:h2-eth0 s3-eth3:s2-eth1s4 lo:s4-eth1:h3-eth0 s4-eth2:h4-eth0 s4-eth3:s2-eth2s5 lo:s5-eth1:s6-eth3 S5-eth2:s7-eth3 s5-eth3:s1-eth2s6 lo:s6-eth1:h5-eth0 s6-eth2:h6-eth0 s6-eth3:s5-eth1s7 lo:s7-eth1:h7-eth0 s7-eth2: H8-eth0 s7-eth3:s5-eth2c0  

Minimal

Minimal refers to the smallest and mininet default topology, connecting two hosts to a single switch

[email protected]:~# mn --topo=minimal*** Creating network*** Adding controller*** Adding hosts:h1 h2 *** Adding switches:s1 *** Adding links:(h1, s1) (h2, s1) *** Configuring hostsh1 h2 *** Starting controllerc0 *** Starting 1 switchess1 ...*** Starting CLI:mininet> neth1 h1-eth0:s1-eth1h2 h2-eth0:s1-eth2s1 lo:  s1-eth1:h1-eth0 s1-eth2:h2-eth0c0

--mac

Mininer is created by default to every device (Host,switch, etc.). ) assigns a MAC address, but each time the assigned Mac location changes, and the adjustment is more difficult. --macis to keep your Mac location simple and understandable.

Not yet tuned:

mininet> h1 ifconfig | grep HWaddrh1-eth0   Link encap:Ethernet  

Join--mac

mininet> h1 ifconfig | grep HWaddrh1-eth0   Link encap:Ethernet  HWaddr 00:00:00:00:00:01

Terminal to open individual hosts xterm

mn -xThe terminal of each device will be turned on when Mininet is turned on
To turn on Xtrem for a single device, after opening the topology, performxterm (设备)

Mininet (lightweight software defined network and test platform) II