Mininet(輕量級軟件定義網絡和測試平臺) 之一
阿新 • • 發佈:2018-05-23
mininet#Mininet -1
基本環境:
parallels@parallels-vm:~$ uname -r
4.13.0-43-generic
parallels@parallels-vm:~$ uname -a
Linux parallels-vm 4.13.0-43-generic #48~16.04.1-Ubuntu SMP Thu May 17 12:56:46 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
##Mininet基本操作:
###在操作前,我們可以利用 mn -h
來查看使用手冊
parallels@parallels-vm:~$ sudo mn -h Usage: mn [options] (type mn -h for details) The mn utility creates Mininet network from the command line. It can create parametrized topologies, invoke the Mininet CLI, and run tests. Options: -h, --help show this help message and exit --switch=SWITCH default|ivs|lxbr|ovs|ovsbr|ovsk|user[,param=value...] ovs=OVSSwitch default=OVSSwitch ovsk=OVSSwitch lxbr=LinuxBridge user=UserSwitch ivs=IVSSwitch ovsbr=OVSBridge --host=HOST cfs|proc|rt[,param=value...] rt=CPULimitedHost{‘sched‘: ‘rt‘} proc=Host cfs=CPULimitedHost{‘sched‘: ‘cfs‘} --controller=CONTROLLER default|none|nox|ovsc|ref|remote|ryu[,param=value...] ovsc=OVSController none=NullController remote=RemoteController default=DefaultController nox=NOX ryu=Ryu ref=Controller --link=LINK default|ovs|tc|tcu[,param=value...] default=Link ovs=OVSLink tcu=TCULink tc=TCLink --topo=TOPO linear|minimal|reversed|single|torus|tree[,param=value ...] linear=LinearTopo torus=TorusTopo tree=TreeTopo single=SingleSwitchTopo reversed=SingleSwitchReversedTopo minimal=MinimalTopo -c, --clean clean and exit --custom=CUSTOM read custom classes or params from .py file(s) --test=TEST none|build|all|iperf|pingpair|iperfudp|pingall -x, --xterms spawn xterms for each node -i IPBASE, --ipbase=IPBASE base IP address for hosts --mac automatically set host MACs --arp set all-pairs ARP entries -v VERBOSITY, --verbosity=VERBOSITY info|warning|critical|error|debug|output --innamespace sw and ctrl in namespace? --listenport=LISTENPORT base port for passive switch listening --nolistenport don‘t use passive listening port --pre=PRE CLI script to run before tests --post=POST CLI script to run after tests --pin pin hosts to CPU cores (requires --host cfs or --host rt) --nat [option=val...] adds a NAT to the topology that connects Mininet hosts to the physical network. Warning: This may route any traffic on the machine that uses Mininet‘s IP subnet into the Mininet network. If you need to change Mininet‘s IP subnet, see the --ipbase option. --version prints the version and exits --cluster=server1,server2... run on multiple servers (experimental!) --placement=block|random node placement for --cluster (experimental!)
以上是我們可以在Mininet裏面下的參數,下面,我們開始建立基本的拓樸
###基本拓樸
建立最簡單的網絡環境 sudo mn
parallels@parallels-vm:~$ sudo mn *** 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>
快速觀察網絡中有哪些節點 (mininet)nodes
mininet> nodes
available nodes are:
c0 h1 h2 s1
檢查網路拓樸(各個節點)連線狀況 (mininet)net
mininet> net
h1 h1-eth0:s1-eth1
h2 h2-eth0:s1-eth2
s1 lo: s1-eth1:h1-eth0 s1-eth2:h2-eth0
c0
針對特定設備進行操作 (mininet) (設備名 ex. h1 ) (指令)
mininet> h1 ifconfig h1-eth0 Link encap:Ethernet HWaddr e6:06:6d:77:e4:c5 inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0 inet6 addr: fe80::e406:6dff:fe77:e4c5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:59 errors:0 dropped:0 overruns:0 frame:0 TX packets:31 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5911 (5.9 KB) TX bytes:2630 (2.6 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
關閉mininet (mininet) exit
mininet> exit
*** Stopping 1 controllers
c0
*** Stopping 2 links
..
*** Stopping 1 switches
s1
*** Stopping 2 hosts
h1 h2
*** Done
completed in 779.394 seconds
註意!!!! 如果mininet 操作上有問題(網路、不知名的bug),則使用 sudo mn -c
便可以徹底的將環境清理幹凈!!
Mininet(輕量級軟件定義網絡和測試平臺) 之一