[pox-dev] SDN

[Weiyang Mo]

You just ned make simple code revision to work with INCM packets work in
your case. As Murphy suggested, current module is TCP_balancer. Why not try
iperf in mininet?

Weiyang


2014-04-10 5:09 GMT-07:00 shads s <shasi0625 at gmail.com>:

> Hello
>
>
> How do I execute it with only TCP?
>
> When i give  h1 ping h2 in Mininet without the remote POX controller it
> executes and gives the following output.
>
> mn
> *** Creating network
> *** Adding controller
> *** Adding hosts:
> h1 h2
> *** Adding switches:
> s1
> *** Adding links:
> (h1, s1) (h2, s1)
> *** Configuring hosts
> h1 h2
> *** Starting controller
> *** Starting 1 switches
> s1
> *** Starting CLI:
> mininet> h1 ping h2
> PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
> 64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=2.71 ms
> 64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.202 ms
>
> But when I run with POX controller why doesn't it ping?
>
>
> On Thu, Apr 10, 2014 at 12:57 PM, Murphy McCauley <
> murphy.mccauley at gmail.com> wrote:
>
>> I think the answer to this is hinted at in a comment in ip_loadbalancer.
>>  As shipped, it really only works with TCP.  I think it'd be easy enough to
>> make it work with ICMP, but... why bother?  Maybe it should be named
>> tcp_loadbalancer.
>>
>> -- Murphy
>>
>>
>> On Apr 10, 2014, at 12:14 AM, shads s <shasi0625 at gmail.com> wrote:
>>
>> Hello All,
>>
>> I have tried to execute misc.ip_loadbalancer example along with mininet.
>> But I am not able to ping between hosts. When i do a tcpdump -i s1-eth1 -n
>> i can see only ARP request packets going to the servers but no reply
>> packets coming back to the clients. I dont know what is the error. Kindly
>> advise.
>>
>>
>>
>> *Following is the output of
>> POX:---------------------------------------------*./pox.py
>> misc.ip_loadbalancer --ip=10.1.2.3
>> --servers=10.0.0.5,10.0.0.6,10.0.0.7,10.0.0.8
>> POX 0.2.0 (carp) / Copyright 2011-2013 James McCauley, et al.
>> INFO:core:POX 0.2.0 (carp) is up.
>> INFO:openflow.of_01:[00-00-00-00-00-01 1] connected
>> INFO:iplb:IP Load Balancer Ready.
>> INFO:iplb:Load Balancing on [00-00-00-00-00-01 1]
>> INFO:iplb.00-00-00-00-00-01:Server 10.0.0.5 up
>> INFO:iplb.00-00-00-00-00-01:Server 10.0.0.6 up
>> INFO:iplb.00-00-00-00-00-01:Server 10.0.0.7 up
>> INFO:iplb.00-00-00-00-00-01:Server 10.0.0.8 up
>>
>>
>> *Mininet Network details:*
>> *-----------------------------------*
>> mininet> net
>> h1 h1-eth0:s1-eth1
>> h2 h2-eth0:s1-eth2
>> h3 h3-eth0:s1-eth3
>> h4 h4-eth0:s1-eth4
>> h5 h5-eth0:s1-eth5
>> h6 h6-eth0:s1-eth6
>> h7 h7-eth0:s1-eth7
>> h8 h8-eth0:s1-eth8
>> s1 lo:  s1-eth1:h1-eth0 s1-eth2:h2-eth0 s1-eth3:h3-eth0 s1-eth4:h4-eth0
>> s1-eth5:h5-eth0 s1-eth6:h6-eth0 s1-eth7:h7-eth0 s1-eth8:h8-eth0
>> c0
>>
>>
>>
>> *TCPDUMP logs:------------------------*
>> # tcpdump -i s1-eth1 -n
>> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
>> listening on s1-eth1, link-type EN10MB (Ethernet), capture size 65535
>> bytes
>> 12:24:31.983329 IP 10.0.0.1 > 10.0.0.5: ICMP echo request, id 6952, seq
>> 8, length 64
>> 12:24:32.983326 IP 10.0.0.1 > 10.0.0.5: ICMP echo request, id 6952, seq
>> 9, length 64
>> 12:24:33.056225 ARP, Request who-has 10.0.0.7 (Broadcast) tell 10.1.2.3,
>> length 28
>> 12:24:33.983326 IP 10.0.0.1 > 10.0.0.5: ICMP echo request, id 6952, seq
>> 10, length 64
>> 12:24:34.350903 ARP, Request who-has 10.0.0.8 (Broadcast) tell 10.1.2.3,
>> length 28
>>
>> Thanks
>> Sharadhi
>>
>>
>> On Thu, Apr 10, 2014 at 11:05 AM, Weiyang Mo <moweiyang1988 at gmail.com>wrote:
>>
>>> Hi,
>>>
>>> You may refer to misc.ip_loadbalancer in pox folder.
>>>
>>> Weiyang
>>>
>>>
>>> 2014-04-09 22:29 GMT-07:00 shads s <shasi0625 at gmail.com>:
>>>
>>> Hello all
>>>>
>>>> I am new to networking and SDN.
>>>> Although I have tried few examples in mininet using POX controller, I
>>>> need guidance in executing a simple Loadbalancer.
>>>> Hoping to get some solution
>>>>
>>>> Thanks
>>>> Sharadhi
>>>>
>>>
>>>
>>
>>
>
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