我试图通过 tc 命令在我使用 mininet 创建的网络的交换机部分的接口(端口)1 上指定数据包丢失:
sudo tc qdisc change dev s1-eth1 root netem loss 0.1%
但 gettring 错误:
RTNETLINK answers: Invalid argument
任何帮助,将不胜感激。
网络详情:
它是 Ubuntu 14.04 上基于树形拓扑的 mininet 网络,深度 = 2,扇出 = 5。在第一层,一个交换机连接到 5 个交换机,每个交换机连接到 5 个主机。所有交换机都是OpenvSwitch。
小网网络:
#!/usr/bin/python
from functools import partial
from mininet.cli import CLI
from mininet.link import TCLink
from mininet.log import setLogLevel
from mininet.net import Mininet
from mininet.node import OVSKernelSwitch
from mininet.node import RemoteController
from mininet.topo import Topo
from mininet.util import dumpNodeConnections
class MyNet( Topo ):
"Simple topology example."
def __init__( self ):
"Create custom topo."
# Initialize topology
Topo.__init__( self )
# Add hosts
h1 = self.addHost( 'h1' )
h2 = self.addHost( 'h2' )
h3 = self.addHost( 'h3' )
h4 = self.addHost( 'h4' )
h5 = self.addHost( 'h5' )
h6 = self.addHost( 'h6' )
h7 = self.addHost( 'h7' )
h8 = self.addHost( 'h8' )
h9 = self.addHost( 'h9' )
h10 = self.addHost( 'h10' )
h11 = self.addHost( 'h11' )
h12 = self.addHost( 'h12' )
h13 = self.addHost( 'h13' )
h14 = self.addHost( 'h14' )
h15 = self.addHost( 'h15' )
h16 = self.addHost( 'h16' )
h17 = self.addHost( 'h17' )
h18 = self.addHost( 'h18' )
h19 = self.addHost( 'h19' )
h20 = self.addHost( 'h20' )
h21 = self.addHost( 'h21' )
h22 = self.addHost( 'h22' )
h23 = self.addHost( 'h23' )
h24 = self.addHost( 'h24' )
h25 = self.addHost( 'h25' )
# Add switches
s1 = self.addSwitch( 's1' )
s2 = self.addSwitch( 's2' )
s3 = self.addSwitch( 's3' )
s4 = self.addSwitch( 's4' )
s5 = self.addSwitch( 's5' )
s6 = self.addSwitch( 's6' )
# Add links
self.addLink( s2, s1 ,bw=0.1)
self.addLink( s3, s1 ,bw=10)
self.addLink( s4, s1 ,bw=10)
self.addLink( s5, s1 ,bw=10)
self.addLink( s6, s1 ,bw=100)
self.addLink( h1, s2 ,bw=0.1)
self.addLink( h2, s2 ,bw=10)
self.addLink( h3, s2 ,bw=10)
self.addLink( h4, s2 ,bw=10)
self.addLink( h5, s2 ,bw=10)
self.addLink( h6, s3 ,bw=10)
self.addLink( h7, s3 ,bw=10)
self.addLink( h8, s3 ,bw=10)
self.addLink( h9, s3 ,bw=10)
self.addLink( h10, s3 ,bw=10)
self.addLink( h11, s4 ,bw=10)
self.addLink( h12, s4 ,bw=10)
self.addLink( h13, s4 ,bw=10)
self.addLink( h14, s4 ,bw=10)
self.addLink( h15, s4 ,bw=10)
self.addLink( h16, s4 ,bw=10)
self.addLink( h17, s4 ,bw=10)
self.addLink( h18, s4 ,bw=10)
self.addLink( h19, s4 ,bw=10)
self.addLink( h20, s4 ,bw=10)
self.addLink( h21, s6 ,bw=10)
self.addLink( h22, s6 ,bw=10)
self.addLink( h23, s6 ,bw=10)
self.addLink( h24, s6 ,bw=10)
self.addLink( h25, s6 ,bw=100)
topos = { 'MyNet': ( lambda: MyNet() ) }
#sudo mn --custom MyNet.py --topo MyNet --controller=remote,ip=10.0.0.1,port=6633 --switch ovsk,protocols=OpenFlow13 --link tc