[pox-dev] SDN

[Murphy McCauley]

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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