SDN第一次上机作业
1.用字符命令生成拓扑,并测试连通性,截图
# sudo mn --topo tree, fanout=3,depth=2
# net
# pingall
2.用字符命令生成拓扑,并测试连通性,截图
# sudo ./miniedit.py
使用图形化界面并生成了拓扑
# net
# pingall
4.用Python脚本生成一个Fat-tree型的拓扑,截图
-
首先安装
floodlight
-
安装完成后,查看当前的服务器的IP地址 ->
# ifconfig
-
进入到floodlight安装路径下,运行
floodlight
-># java -jar target/floodlight.jar
-
运行python脚本,生成拓扑:
# sudo mn --custom fattree.py --topo mytopo --controller=remote,ip=10.211.55.4,port=6653 --switch ovsk,protocols=OpenFlow10
pingall
:
fattree.py代码:
class FatTreeTopo(Topo):
def __init__(self):
Topo.__init__(self)
L1 = 2
L2 = L1 * 2
L3 = L2
c = []
a = []
e = []
for i in range(L1):
sw = self.addSwitch("c{}".format(i + 1))
c.append(sw)
for i in range(L2):
sw = self.addSwitch("a{}".format(L1 + i + 1))
a.append(sw)
for i in range(L3):
sw = self.addSwitch("e{}".format(L1 + L2 + i + 1))
e.append(sw)
for i in range(L1):
sw1 = c[i]
for sw2 in a:
self.addLink(sw1, sw2)
for i in range(0, L2, 2):
for sw1 in a[i:i + 2]:
for sw2 in e[i:i + 2]:
self.addLink(sw2, sw1)
count = 1
for sw1 in e:
for i in range(2):
host = self.addHost("h{}".format(count))
self.addLink(sw1, host)
count += 1
def build( self, *args, **params ):
pass
# LinearTopo()
topos = { 'mytopo': ( lambda: FatTreeTopo() ) }
遇到的问题:
- 运行时端口号设置为6633无法ping通,改为6653后可以ping通
- 解决Floodlight1.2+Mininet问题及使用安装 <- 这里面遇到的问题全部遇到了orz