How to establish communication between a wireless station and traditional host

[razikfakih]

I am building a topology where an Access Point connects a wireless station as well as a traditional host. However although there are direct links of connection with acess point for both traditional host as well as wireless station, I am not able to ping from wireless station to traditional host.

My topology code simplified: ap1 = net.addAccessPoint('ap1') sta1 = net.addStation('sta1') h = net.addHost('h')

wifi.configureNodes()

net.addLink(ap1, sta1) net.addLink(ap1, h, 2, 1)

Please advice how should I sort this.

[ramonfontes]

I'm unable to help you with so few information. Please provide as much information as you can. Don't forget to give information on reproducible steps and expected results.

[razikfakih]

Sir, Its just a simple topology in mininet wifi, where I am connecting one Access Point to a station as well as a traditional host PC to the same Access Point.

Apparently the station will be connected wirelessly and host will be connected through Ethernet

Now when a ping from station to traditional host, it is unsuccessful and I receive a message... connect: host unreachable

I simply want to know how should we successfully connect a traditional host and wireless station through an AP. Thanks

[ramonfontes]

Please be more complete and provide useful information about the problem. Otherwise, I will have to close this issue.

[razikfakih]

I will try to get back to you with more detailed information soon. Please keep the issue open, will be back with additional detailed information soon. Thanks

[razikfakih]

Please find the details of the problem...

Aim: To establish communication between wireless stations and traditional hosts.

Script: from mininet.log import setLogLevel, info from mn_wifi.link import wmediumd, mesh from mn_wifi.cli import CLI from mn_wifi.net import Mininet_wifi from mn_wifi.wmediumdConnector import interference

def topology(): "Create a network." net = Mininet_wifi(link=wmediumd, wmediumd_mode=interference)

info("*** Creating gateway and internet\n")
g = net.addHost('g', mac='00:00:00:00:00:01')
r = net.addHost('r', ip='150.0.0.2', mac='00:00:00:00:00:91')

info("*** Creating nodes\n")
sta1 = net.addStation('sta1', ip='10.0.1.2', mac='00:00:00:00:00:11', position='40,0,10')
sta2 = net.addStation('sta2', ip='10.0.1.3', mac='00:00:00:00:00:12', position='40,10,10')
sta3 = net.addStation('sta3', ip='10.0.1.4', mac='00:00:00:00:00:13', position='40,20,10')
#sta2 = net.addStation('sta2', ip='10.0.1.110', mac='00:00:00:00:00:12', position='31,1,0')

ap1 = net.addAccessPoint('ap1', wlans=3, ssid='ssid1', position='50,0,10')
ap2 = net.addAccessPoint('ap2', wlans=2, ssid='ssid2', position='50,10,10')
ap3 = net.addAccessPoint('ap3', wlans=2, ssid='ssid3', position='50,20,10')
#ap4 = net.addAccessPoint('ap4', wlans=2, ssid='ssid4', position='30,10,0')

c0 = net.addController('c0')

info("*** Configuring wifi nodes\n")
net.configureWifiNodes()

info("*** Associating Stations\n")
net.addLink(sta1, ap1)
net.addLink(sta2, ap2)
net.addLink(sta3, ap3)
net.addLink(ap1, ap2)
net.addLink(ap2, ap3)

#net.addLink(ap1, intf='ap1-wlan2', cls=mesh, ssid='mesh-ssid', channel=5)
#net.addLink(ap2, intf='ap2-wlan2', cls=mesh, ssid='mesh-ssid', channel=5)
#net.addLink(ap3, intf='ap3-wlan2', cls=mesh, ssid='mesh-ssid', channel=5)

info("*** Internet setup\n")
net.addLink(g, r, 1, 1)
net.addLink(g, ap1, 2, 3)

info("*** Starting network\n")
net.build()
c0.start()
ap1.start([c0])
ap2.start([c0])
ap3.start([c0])

info("*** Running CLI\n")
CLI(net)

info("*** Stopping network\n")
net.stop()

if name == 'main': setLogLevel('info') topology()

After executing the script, I successfully enabled ip forwarding on host g and also assigned respective addresses of 150.0.0.1 at g-eth1 and 10.0.1.1(connecting access point) at g-eth2(connecting another traditional host)

Issue: Although the sta1 and host g are connected to each other through ap1, I am not able to ping from host g to sta1 and vice versa. sta1 can ping sta2 and sta3 but not host g and host r

Can you kindly advice how can I fix this. Thanks

[ramonfontes]

I can see no IP address assigned to the g node in your code. :(

BTW, does g have eth1 and eth2?? Shouldn't it have eth0 and eth1???

[razikfakih]

As mentioned in question that I have enabled forwarding on router from command line and have assigned address to interfaces during run time from command line hence did not include them in the script.

Yes, I have used interfaces from eth1 rather than eth0 as I believed it should not be a problem, however do you suggest me to change interface names and try again?

[ramonfontes]

Closing due to inactivity