[pox-dev] No ICMP Reply When Sending An ICMP Request

[Adel Zaalouk]

Hi, 

I am trying to to send an ICMP Request from POX and I am sing the packet 
classes in POX to form the packet. 

It looks something like this. 


    # echo 
    r = pkt.echo(id=3036, seq=41)
    r.payload=""

    # Make the ping reply
    icmp = pkt.icmp()
    icmp.type = 8
    icmp.code = 0
    icmp.payload = r

    # Make the IP packet around it
    ipp = pkt.ipv4()
    ipp.protocol = ipp.ICMP_PROTOCOL
    ipp.srcip = IPAddr(ipsource)
    ipp.dstip = IPAddr(ipdestination)

    # Ethernet around that...
    e = pkt.ethernet()
    e.src = EthAddr(macsource)
    e.dst = EthAddr(macdestination)
    e.type = e.IP_TYPE

    # Hook them up...
    ipp.payload = icmp
    e.payload = ipp

    # Send it back to the input port
    msg = of.ofp_packet_out()
    msg.actions.append(of.ofp_action_output(port = 2))
    msg.data = e.pack()
    msg.in_port = of.OFPP_NONE


I can see the request being sent, but I can't see any reply. Any 
recommendations ? 

Thanks in advance, 
Adel.