Re: [pox-dev] Attribute error with ping

[AMER AL-GHADHBAN]

I apologize for the lack of information
 
I am using pox with mininet v2.0
the main code in my controller is ideal-pairwise-switch
My topology is 2 connected switches and 3 hosts in each
i am trying to do NAT between the switches# i do not know should I exclude ARP 
pkts from NATing #
 
I have added the following matching in _handel_PacketIn 

    msg = of.ofp_flow_mod()
    msg.idle_timeout = 10
    msg.hard_timeout = 30
    msg.match.dl_dst = packet.src
    msg.match.dl_src = packet.dst
    msg.actions.append(of.ofp_action_output(port = event.port))
    event.connection.send(msg)
    msg = of.ofp_flow_mod()
    msg.idle_timeout = 10
    msg.hard_timeout = 30
    msg.match.dl_type = packet.IP_TYPE
    msg.match.dl_dst = packet.src
    msg.match.nw_dst = packet.next.protodst
    msg.match.nw_src = packet.next.protosrc
    msg.match.dl_src = packet.dst
    msg.actions.append(of.ofp_action_output(port = event.port))
    event.connection.send(msg)
# I want to get the IP of the packetin to be used in another function
# i do not know if there is a better way
 
this is the NATing
    msg = of.ofp_flow_mod()
    msg.idle_timeout = 100
    msg.hard_timeout = 130
    msg.match.dl_type = pkt.ethernet.IP_TYPE
    msg.match.nw_dst = IPAddr("10.0.1.1")
    msg.actions.append(of.ofp_action_output(port = dst_port))
    msg.actions.append(of.ofp_action_nw_addr.set_dst(dst))
    core.openflow.sendToDPID(2, msg)
 
I have the following questions:
1. what is the causes of Attribute error as mentioned in previous email
2. Is there a way to do an action like go to next match or continue your 
matching to subsequent flow table rules # I want the switch to execute the 
NATing action and continue to execute the learning_switch action#
 
I appreciate your time and efforts 
Thank you


Eng Amer Alghadhban

COE

SANS-GCFW

CEH, SCNP, CCNA

 
Subject: Re: Attribute error with ping
From: murphy.mccau...@gmail.com
Date: Fri, 30 Aug 2013 14:37:00 -0700
CC: pox-dev@lists.noxrepo.org
To: amer7...@hotmail.com

Please see the final entry of the POX 
FAQ:https://openflow.stanford.edu/display/ONL/POX+Wiki
-- Murphy
On Aug 30, 2013, at 2:19 PM, AMER AL-GHADHBAN <amer7...@hotmail.com> 
wrote:Hello,
 
Hope you the best of wealth :)
 
Some times I am facing this error:
AttributeError: 'ipv4' object has no attribute 'protodst'
if i do:
h2 ping -c3 h1 # i received no echo messages at all
 
and after some seconds when i try it again it is pinging without any errors
 
best wishes

Eng Amer Alghadhban
COE
SANS-GCFW
CEH, SCNP, CCNA