[pox-dev] SDN

[shads s]

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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