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 <shasi0...@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 <moweiyang1...@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 <shasi0...@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 > >
