Mininet-2
进行回归测试 mn --test
透过 --test可以对建立的拓朴进行测试
pingpair则可以测试主机之间连线是否正常（Ping between first two hosts, 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 hosts
h1 h2
*** Starting controller
c0
*** Starting 1 switches
s1 ...
*** Waiting for switches to connect
s1
h1 -> h2
h2 -> h1
*** Results: 0% dropped (2/2 received)
*** Stopping 1 controllers
c0
*** Stopping 2 links
..
*** Stopping 1 switches
s1
*** Stopping 2 hosts
h1 h2
*** Done
completed in 5.681 secondsiperf(Simple iperf TCP test between two (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 hosts
h1 h2
*** Starting controller
c0
*** Starting 1 switches
s1 ...
*** Waiting for switches to connect
s1
*** Iperf: testing TCP bandwidth between h1 and h2
.*** Results: [‘36.3 Gbits/sec‘, ‘36.3 Gbits/sec‘]
*** Stopping 1 controllers
c0
*** Stopping 2 links
..
*** Stopping 1 switches
s1
*** Stopping 2 hosts
h1 h2
*** Done
completed in 10.987 seconds用参数调整拓朴--topo
--topo=TOPO linear|minimal|reversed|single|torus|tree[,param=value
...] linear=LinearTopo torus=TorusTopo tree=TreeTopo
single=SingleSwitchTopo
reversed=SingleSwitchReversedTopo minimal=MinimalToposingle
single 指的是单个，这类的拓朴只有一个交换机(Switch)，而主机个数可以任意指定，拓朴成星型
[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 hosts
h1 h2 h3
*** Starting controller
c0
*** Starting 1 switches
s1 ...
*** Starting CLI:
mininet> net
h1 h1-eth0:s1-eth1
h2 h2-eth0:s1-eth2
h3 h3-eth0:s1-eth3
s1 lo: s1-eth1:h1-eth0 s1-eth2:h2-eth0 s1-eth3:h3-eth0
c0linear
linear指的是直线， 一个交换机配一个主机，而主机和交换机的个数可以任意指定，拓朴形状成直线型
[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 hosts
h1 h2 h3
*** Starting controller
c0
*** Starting 3 switches
s1 s2 s3 ...
*** Starting CLI:
mininet> net
h1 h1-eth0:s1-eth1
h2 h2-eth0:s2-eth1
h3 h3-eth0:s3-eth1
s1 lo: s1-eth1:h1-eth0 s1-eth2:s2-eth2
s2 lo: s2-eth1:h2-eth0 s2-eth2:s1-eth2 s2-eth3:s3-eth2
s3 lo: s3-eth1:h3-eth0 s3-eth2:s2-eth3
c0tree
tree指的是树，这类的拓朴形状成树状，交换机成树状分散开来，树的最下面一层挂两台主机
[email protected]:~# mn --topo=tree,3
*** Creating network
*** Adding controller
*** Adding hosts:
h1 h2 h3 h4 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 hosts
h1 h2 h3 h4 h5 h6 h7 h8
*** Starting controller
c0
*** Starting 7 switches
s1 s2 s3 s4 s5 s6 s7 ...
*** Starting CLI:
mininet> net
h1 h1-eth0:s3-eth1
h2 h2-eth0:s3-eth2
h3 h3-eth0:s4-eth1
h4 h4-eth0:s4-eth2
h5 h5-eth0:s6-eth1
h6 h6-eth0:s6-eth2
h7 h7-eth0:s7-eth1
h8 h8-eth0:s7-eth2
s1 lo: s1-eth1:s2-eth3 s1-eth2:s5-eth3
s2 lo: s2-eth1:s3-eth3 s2-eth2:s4-eth3 s2-eth3:s1-eth1
s3 lo: s3-eth1:h1-eth0 s3-eth2:h2-eth0 s3-eth3:s2-eth1
s4 lo: s4-eth1:h3-eth0 s4-eth2:h4-eth0 s4-eth3:s2-eth2
s5 lo: s5-eth1:s6-eth3 s5-eth2:s7-eth3 s5-eth3:s1-eth2
s6 lo: s6-eth1:h5-eth0 s6-eth2:h6-eth0 s6-eth3:s5-eth1
s7 lo: s7-eth1:h7-eth0 s7-eth2:h8-eth0 s7-eth3:s5-eth2
c0minimal
minimal指的是最小，也是mininet默认的拓朴，为一个交换机连接两个主机
[email protected]:~# mn --topo=minimal
*** Creating network
*** Adding controller
*** Adding hosts:
h1 h2
*** Adding switches:
s1
*** Adding links:
(h1, s1) (h2, s1)
*** Configuring hosts
h1 h2
*** Starting controller
c0
*** Starting 1 switches
s1 ...
*** Starting CLI:
mininet> net
h1 h1-eth0:s1-eth1
h2 h2-eth0:s1-eth2
s1 lo: s1-eth1:h1-eth0 s1-eth2:h2-eth0
c0--mac
创建mininer时默认会给每一个设备（host,switch等..）分配一个MAC位址，但每一次分配的mac位置都会随之改变，调适难度较大。 --mac就是保证mac位置简单易懂。
尚未调适过的：
mininet> h1 ifconfig | grep HWaddr
h1-eth0 Link encap:Ethernet HWaddr 8e:43:77:2e:47:c9 加入--mac
mininet> h1 ifconfig | grep HWaddr
h1-eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:01开启各别主机的 terminalxterm
mn -x会在开启mininet时，将各个设备的terminal打开
若要针对单一个设备打开xtrem，便在开启拓朴后，执行xterm (设备)
原文地址：http://blog.51cto.com/12098022/2119725
时间： 2024-11-08 20:38:19