[nox-dev] For help
Hi, I want to let the packets send to the local machine, how could I write the command, and what is the output port? actions = [[openflow.OFPAT_OUTPUT, [0, ?]]] Thank you very much! John ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] For help
I'm not clear on what you want to do… What do you mean by the local machine? The controller? Where do you want to output them? Out of an ethernet adapter? -- Murphy On Mar 1, 2012, at 2:43 AM, bbs wrote: Hi, I want to let the packets send to the local machine, how could I write the command, and what is the output port? actions = [[openflow.OFPAT_OUTPUT, [0, ?]]] Thank you very much! John ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] For help
Hi, I am writing a component for the nox controller, which can guid the openflow-switch to decide which port to send the packets. But, when I want the packet to be sent to the local port in the openflow-switch, I didn't know how to write the actions list( using python), Is the following right? actions = [[openflow.OFPAT_OUTPUT, [0, OFPP_LOCAL]]] Thank you for your replay! John 在 2012-03-01 21:54:23，Murphy McCauley jam...@nau.edu 写道： I'm not clear on what you want to do… What do you mean by the local machine? The controller? Where do you want to output them? Out of an ethernet adapter? -- Murphy On Mar 1, 2012, at 2:43 AM, bbs wrote: Hi, I want to let the packets send to the local machine, how could I write the command, and what is the output port? actions = [[openflow.OFPAT_OUTPUT, [0, ?]]] Thank you very much! John ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] For help
Yeah, I think that looks right. -- Murphy On Mar 1, 2012, at 7:26 AM, bbs wrote: Hi, I am writing a component for the nox controller, which can guid the openflow-switch to decide which port to send the packets. But, when I want the packet to be sent to the local port in the openflow-switch, I didn't know how to write the actions list( using python), Is the following right? actions = [[openflow.OFPAT_OUTPUT, [0, OFPP_LOCAL]]] Thank you for your replay! John 在 2012-03-01 21:54:23，Murphy McCauley jam...@nau.edu 写道： I'm not clear on what you want to do… What do you mean by the local machine? The controller? Where do you want to output them? Out of an ethernet adapter? -- Murphy On Mar 1, 2012, at 2:43 AM, bbs wrote: Hi, I want to let the packets send to the local machine, how could I write the command, and what is the output port? actions = [[openflow.OFPAT_OUTPUT, [0, ?]]] Thank you very much! John ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] FW: Help: LAVI and NOX's nox-gui.py
Anyone know if you can obtain the host information via json? (sorry for re-post I didn't want my question to get overlooked in the middle here). Thanks, Aaron On Sun, Dec 4, 2011 at 3:16 PM, Aaron Rosen aro...@clemson.edu wrote: Hi, I'm curious about how to get these hosts via lavi. I've tried running: ./nox_core -i ptcp:6633 jsonmessenger=tcpport=11222,sslport=0 lavi_switches lavi_swlinks lavi_host2sw pyswitch trackhost_pktin Then using nox-console with: python nox-console.py -n localhost -p 11222 getnodes all Though, that doesn't seem to return anything with hosts. How do I get this information? Thanks, Aaron On Fri, Dec 2, 2011 at 2:29 PM, Kyriakos Zarifis kyr.zari...@gmail.com wrote: Oh, also, there is one component that is responsible for tracking host traffic, and that's what feeds the host information to LAVI and eventually to the GUI I can't remember if it is there as a dependency, so you might need to run that manually. I think the name is trackhost_pktin (can't check right now unfortunately). So maybe try adding that too after monitoring and pyswitch ? On Fri, Dec 2, 2011 at 11:24 AM, Kyriakos Zarifis kyr.zari...@gmail.com wrote: Hi, the hosts should appear when they talk to the network. Did you try generating some traffic? A simple ping should do it (btw, I think lavi is not required as an argument as IIRC it's a dependency of monitoring anyway) On Fri, Dec 2, 2011 at 1:21 AM, ztom switch@hotmail.com wrote: Hi~ alls, I used LAVI and nox-gui.py(another front-end as ENVI), and tested some cases with NOX and openvswitch, one switch links to one host, my cmd is $ ./nox_core -v -i ptcp:6633 monitoring pyswitch lavi , but there's no host icon and hs2sw link in nox-gui's view, just swicth icon. Could someone help me... --- thanks a lot ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev -- Aaron O. Rosen Masters Student - Network Communication 306B Fluor Daniel -- Aaron O. Rosen Masters Student - Network Communication 306B Fluor Daniel ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
[nox-dev] FW: Help: LAVI and NOX's nox-gui.py
Hi~ alls, I used LAVI and nox-gui.py(another front-end as ENVI), and tested some cases with NOX and openvswitch, one switch links to one host, my cmd is $ ./nox_core -v -i ptcp:6633 monitoring pyswitch lavi , but there's no host icon and hs2sw link in nox-gui's view, just swicth icon. Could someone help me... --- thanks a lot ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] FW: Help: LAVI and NOX's nox-gui.py
Hi, the hosts should appear when they talk to the network. Did you try generating some traffic? A simple ping should do it (btw, I think lavi is not required as an argument as IIRC it's a dependency of monitoring anyway) On Fri, Dec 2, 2011 at 1:21 AM, ztom switch@hotmail.com wrote: Hi~ alls, I used LAVI and nox-gui.py(another front-end as ENVI), and tested some cases with NOX and openvswitch, one switch links to one host, my cmd is $ ./nox_core -v -i ptcp:6633 monitoring pyswitch lavi , but there's no host icon and hs2sw link in nox-gui's view, just swicth icon. Could someone help me... --- thanks a lot ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] FW: Help: LAVI and NOX's nox-gui.py
Oh, also, there is one component that is responsible for tracking host traffic, and that's what feeds the host information to LAVI and eventually to the GUI I can't remember if it is there as a dependency, so you might need to run that manually. I think the name is trackhost_pktin (can't check right now unfortunately). So maybe try adding that too after monitoring and pyswitch ? On Fri, Dec 2, 2011 at 11:24 AM, Kyriakos Zarifis kyr.zari...@gmail.comwrote: Hi, the hosts should appear when they talk to the network. Did you try generating some traffic? A simple ping should do it (btw, I think lavi is not required as an argument as IIRC it's a dependency of monitoring anyway) On Fri, Dec 2, 2011 at 1:21 AM, ztom switch@hotmail.com wrote: Hi~ alls, I used LAVI and nox-gui.py(another front-end as ENVI), and tested some cases with NOX and openvswitch, one switch links to one host, my cmd is $ ./nox_core -v -i ptcp:6633 monitoring pyswitch lavi , but there's no host icon and hs2sw link in nox-gui's view, just swicth icon. Could someone help me... --- thanks a lot ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Need help
ok. Thanks. On Tue, Aug 16, 2011 at 8:56 PM, Murphy McCauley jam...@nau.edu wrote: Hi. This list is mostly for questions directly related to NOX. I think your question is probably a better fit for openflow-discuss. https://mailman.stanford.edu/mailman/listinfo/openflow-discuss -- Murphy On Aug 16, 2011, at 7:50 AM, Surendran P wrote: Hello People, I am new to this group and Open Flow. Hence, started learning stuffs about Nox. so, got some doubts. To begin with, could someone please guide me on how Open Flow could be implemented on packet core networks ? say for eg if im interested with gtp packets. I know it is a huge topic to discuss. but it will be helpful for me if someone can help me. :) Thanks, Surendran ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Install_datapath_flow help
Thank you very much Murphy, your hint about the OFPAT_SET_NW_SRC and
OFPAT_SET_NW_DST really helps me, because I am still a bit confused on
how to set rule parameters I want to insert into the switch's table.
In particular, I am trying to learn how to pass all the parameters I
would need in the future to install particular flow-entry.
Unfortunately, for the moment, I did not understand if I have to specify
them into the attrs dictionary I pass to the install_datapath_flow
function and use a simple action list (with the OFPAT_OUTPUT action), of
if I have to put them into the action list. Could someone please help me?
However, now I am trying to solve the ILLEGAL and ERROR problem, because
I get it also without sending traffic between the two hosts, but just
when the switch joins the network. Maybe solving this problem would help
me also in inserting the entry properly.
Thank you very much.
Regards,
Giorgio
Il 16/06/2011 21:01, Murphy McCauley ha scritto:
Just a couple quick observations to help you get started here:
If this flow is static, you shouldn't need to wait for a packet_in to install
it. You should be able to install it proactively when the switch connects
(aka when the datapath joins).
The OFPAT_SET_NW_SRC and OFPAT_SET_NW_DST actions *change the addresses in the
packet*. But you're already setting the flow to only match these same
addresses. So there's no point changing them.
Your switch seems to think something is ILLEGAL and is sending an ERROR
before it even gets the flow_mod from install_datapath_flow(). You might want
to know what this is. Additionally, it might help to actually look at the
flow_mod that gets sent to see if it's sensible. For both of these, the
easiest thing to do is probably install the OpenFlow WireShark plugin and
watch the traffic on the wire.
Hope something in there helps. :)
-- Murphy
On Thursday, June 16, 2011 08:34:22 AM Giorgio Mazza wrote:
Hi,
I'm new in NOX and python and, to start, I am trying to write a simple
component that inserts a static entry in the switch flow-table.
To handle the packet-in event, I wrote this code, in order to send out
of port 25 all the packets arriving from port 26 (these are the two port
connected with my hosts).
def packet_in_callback(self,dp_id, inport, ofp_reason,
total_frame_len, buffer_id, captured_data):
if inport == 26:
outport = 25
dp_id = 1
attrs = { core.IN_PORT : 26,
core.DL_TYPE :
ethernet.ethernet.IP_TYPE,
core.NW_PROTO :
ipv4.ipv4.UDP_PROTOCOL,
core.NW_SRC : '192.168.1.3',
core.NW_DST : '192.168.1.2' }
idle_timeout = openflow.OFP_FLOW_PERMANENT
hard_timeout = openflow.OFP_FLOW_PERMANENT
actions = [[openflow.OFPAT_SET_NW_SRC,
attrs[core.NW_SRC]],[openflow.OFPAT_SET_NW_DST, attrs[core.NW_DST]],
[openflow.OFPAT_OUTPUT, [0,
outport]]]
self.install_datapath_flow(dp_id,
attrs,
idle_timeout,
hard_timeout,
actions)
return CONTINUE
return CONTINUE
To test my configuration I generate some UDP traffic from host
192.168.1.3 (connected to switch's port 26) to host 192.168.1.2
(connected to port 25), but I didn't receive anything.
All my packets, instead of going to the second host, were sent to the
controller, as if it was no entry in the table.
So, I checked the OF table and I saw that there was an entry with
in_port = 26 and noout_port field.
Looking at the controller-session, from the switch side, I saw these
messages:
02:47:12.833936 OFS( 1) SENT192.168.0.31.6633 : HELLO
02:47:12.844890 OFS( 1) RECV192.168.0.31.6633 : HELLO
02:47:12.856572 OFS( 1) RECV192.168.0.31.6633 : FEATURES_REQUEST
02:47:12.860060 OFS( 1) SENT192.168.0.31.6633 : FEATURES_REPLY
02:47:12.863689 OFS( 1) RECV192.168.0.31.6633 : SET_CONFIG
02:47:12.868494 OFS( 1) RECV192.168.0.31.6633 : ILLEGAL
02:47:12.868531 OFS( 1) SENT192.168.0.31.6633 : ERROR
02:47:12.871919 OFS( 1) RECV192.168.0.31.6633 : FLOW_MOD
02:47:13.611462 OFS( 1) SENT192.168.0.31.6633 : PACKET_IN
02:47:13.613926 OFS( 1) RECV192.168.0.31.6633 : FLOW_MOD
Could someone please explain to me where I am wrong in the code, so that
I get these illegal and error messages and I am not able to make the
switch has the desired behaviour?
Sorry for bothering with dummy questions.
Thanks a lot.
Regards,
Giorgio
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Re: [nox-dev] Install_datapath_flow help
Things in the attrs dictionary describe packets you want to operate on (attrs
eventually becomes an ofp_match, essentially). If you want to operate on all
UDP traffic from a specific source IP address, for example, you would describe
that here.
The actions list, on the other hand, says what you want to DO with packets
that match the description given in attrs. For example, you may want to send
them all out a certain port (probably the most common case), or you may want
to change their IP or ethernet addresses or something else more exotic.
Hope that helps.
-- Murphy
On Friday, June 17, 2011 02:25:36 AM Giorgio Mazza wrote:
Thank you very much Murphy, your hint about the OFPAT_SET_NW_SRC and
OFPAT_SET_NW_DST really helps me, because I am still a bit confused on
how to set rule parameters I want to insert into the switch's table.
In particular, I am trying to learn how to pass all the parameters I
would need in the future to install particular flow-entry.
Unfortunately, for the moment, I did not understand if I have to specify
them into the attrs dictionary I pass to the install_datapath_flow
function and use a simple action list (with the OFPAT_OUTPUT action), of
if I have to put them into the action list. Could someone please help me?
However, now I am trying to solve the ILLEGAL and ERROR problem, because
I get it also without sending traffic between the two hosts, but just
when the switch joins the network. Maybe solving this problem would help
me also in inserting the entry properly.
Thank you very much.
Regards,
Giorgio
Il 16/06/2011 21:01, Murphy McCauley ha scritto:
Just a couple quick observations to help you get started here:
If this flow is static, you shouldn't need to wait for a packet_in to
install it. You should be able to install it proactively when the
switch connects (aka when the datapath joins).
The OFPAT_SET_NW_SRC and OFPAT_SET_NW_DST actions *change the addresses
in the packet*. But you're already setting the flow to only match these
same addresses. So there's no point changing them.
Your switch seems to think something is ILLEGAL and is sending an
ERROR before it even gets the flow_mod from install_datapath_flow().
You might want to know what this is. Additionally, it might help to
actually look at the flow_mod that gets sent to see if it's sensible.
For both of these, the easiest thing to do is probably install the
OpenFlow WireShark plugin and watch the traffic on the wire.
Hope something in there helps. :)
-- Murphy
On Thursday, June 16, 2011 08:34:22 AM Giorgio Mazza wrote:
Hi,
I'm new in NOX and python and, to start, I am trying to write a simple
component that inserts a static entry in the switch flow-table.
To handle the packet-in event, I wrote this code, in order to send out
of port 25 all the packets arriving from port 26 (these are the two port
connected with my hosts).
def packet_in_callback(self,dp_id, inport, ofp_reason,
total_frame_len, buffer_id, captured_data):
if inport == 26:
outport = 25
dp_id = 1
attrs = { core.IN_PORT : 26,
core.DL_TYPE :
ethernet.ethernet.IP_TYPE,
core.NW_PROTO :
ipv4.ipv4.UDP_PROTOCOL,
core.NW_SRC : '192.168.1.3',
core.NW_DST : '192.168.1.2' }
idle_timeout = openflow.OFP_FLOW_PERMANENT
hard_timeout = openflow.OFP_FLOW_PERMANENT
actions = [[openflow.OFPAT_SET_NW_SRC,
attrs[core.NW_SRC]],[openflow.OFPAT_SET_NW_DST, attrs[core.NW_DST]],
[openflow.OFPAT_OUTPUT, [0,
outport]]]
self.install_datapath_flow(dp_id,
attrs,
idle_timeout,
hard_timeout,
actions)
return CONTINUE
return CONTINUE
To test my configuration I generate some UDP traffic from host
192.168.1.3 (connected to switch's port 26) to host 192.168.1.2
(connected to port 25), but I didn't receive anything.
All my packets, instead of going to the second host, were sent to the
controller, as if it was no entry in the table.
So, I checked the OF table and I saw that there was an entry with
in_port = 26 and noout_port field.
Looking at the controller-session, from the switch side, I saw these
messages:
02:47:12.833936 OFS( 1) SENT192.168.0.31.6633 : HELLO
02:47:12.844890 OFS( 1) RECV192.168.0.31.6633 : HELLO
02:47:12.856572 OFS( 1) RECV
Re: [nox-dev] Please help me about NOX in Mininet
Hi Anh, cc-ed the mailing list where you can get more help. 00027|nox|DBG:No switch auth module registered, auto-approving switch This line is benign . You can safely ignore it. Regards KK On 29 October 2010 02:17, Anh Nguyen nna4...@gmail.com wrote: Dear KK, I'm using mininet to simulation a simple testbed.I started with the guide at http://www.openflowswitch.org/wk/index.php/HOTITutorial2010, Everything seem like OK, but when I try to modify pytutorial.py in ~/noxcore/src/nox/coreapps/tutorial/ (to build a simple learning switch), and run : ./nox_core -v -i ptcp: pytutorial. after run this command, I try ping host 2 to host 3 but 100% packet is loss, and in the NOX screen: 00016|nox|DBG:python: Current state: INSTALLED Required state: INSTALLED Dependencies: 00017|openflow|DBG:Passive tcp interface bound to port 6633 00018|nox|INFO:nox bootstrap complete 00019|openflow|DBG:Passive tcp interface received connection 00020|openflow|DBG:stream: negotiated OpenFlow version 0x01 (we support versions 0x01 to 0x01 inclusive, peer no later than version 0x01) 00021|nox|DBG:Success sending in 'sending switch config' 00022|nox|DBG:Success sending in 'receiving features reply' 00023|nox|DBG:Success receiving in 'receiving features reply' 00024|nox|DBG:Success sending in 'receiving ofmp capability reply' 00025|nox|DBG:Success receiving in 'receiving ofmp capability reply' 00026|nox|DBG:Datapath 0001 sent error in response to capability reply, assuming no management support 00027|nox|DBG:No switch auth module registered, auto-approving switch 00028|nox|DBG:Registering switch with DPID = 1 I think the problem is in the red line, isn't it? Can you tell me some guides or the code of the learning switch which can run in mininet? Thank you very much ! P.S: I have refer some code which edit the pytutorial.py to the learning swicth at http://yuba.stanford.edu/cs244wiki/index.php/Learning_Switch and http://www.openflowswitch.org/wk/index.php/OpenFlow_Sigmetrics_2009_Hands-on_Tutorial_Instructionshttp://www.openflowswitch.org/wk/index.php/OpenFlow_Sigmetrics_2009_Hands-on_Tutorial_Instructions but unfotunaly , it not work in mininet :(( ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Need help regarding querying statistics from switches
We are recently confirmed the switch itself has some bug, it cant collect byte statistics. Thanks all. On Thu, Dec 10, 2009 at 6:02 PM, Guanyao Huang gyhu...@ucdavis.edu wrote: Hello Sorry to bother others. I one question regarding querying flow statistics from switches through struct ofp_stats_request. I am using nox 5.0 In my topology I periodically ping between hosts. However, I find the packet_count and byte_count from the switch are always 0. I am confirmed that I successfully received ofp_flow_stats from the desired switch. The central controller maintains flow information and I query flows with desired nw_proto, nw_src, nw_dst, tp_src, tp_dst, and in_port. Other fields I use wildcard. When I use tcpreplay to replay some big packets, I find that the returned size are not always 0. However, flows in pcap file expire quickly and it is not easy to debug. Is it true that the returned size will always be 0 if the packet is small? ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Need help regarding querying statistics from switches
Nox version is 5.0. It works for the version of OpenFlow on the switch (0.8.9). I used the same function to print ofp_match field and compare the ofp_match value in the flow statistics request and flow statistics reply. They are exactly the same for the 10 fields (wildcards=0). But the returned value is still always 0. If I use wildcards=0x, then two flows returns (one is for ICMP reply), still with byte_no 0. On Sun, Dec 13, 2009 at 3:55 PM, Keith Amidon ke...@nicira.com wrote: I apologize if you stated this already and I missed it, but what versions NOX and switch software are you using? Thanks, Keith On Sun, 13 Dec 2009 11:17:01 -0800, Guanyao Huang gyhu...@ucdavis.edu wrote: I dont think the flow table entries expire quickly, because I find out only initially the new packet is sent to the controller. Later packets already have entries. It seems I dont have priority to use dpctl dump-flows command. I can telnet to the switches and run showflow command, which shows the flows are correct, with increasing size. Even if I use wildcards=0x to get all flow entries and use a short interval to query flow statistics (500 ms), the returned sizes are still always 0. Now, even reading port statistics doesnt work. Returned value is 0. The code is already posted to this email. ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Need help regarding querying statistics from switches
I find that I can not query port statistics either when pinging. The returned value is also 0. But if I tcpreplay, the returned value is obviously larger than 0 (for port load). Is it that ping is too small? But obviously it can not be 0. On Sun, Dec 13, 2009 at 3:55 PM, Keith Amidon ke...@nicira.com wrote: I apologize if you stated this already and I missed it, but what versions NOX and switch software are you using? Thanks, Keith On Sun, 13 Dec 2009 11:17:01 -0800, Guanyao Huang gyhu...@ucdavis.edu wrote: I dont think the flow table entries expire quickly, because I find out only initially the new packet is sent to the controller. Later packets already have entries. It seems I dont have priority to use dpctl dump-flows command. I can telnet to the switches and run showflow command, which shows the flows are correct, with increasing size. Even if I use wildcards=0x to get all flow entries and use a short interval to query flow statistics (500 ms), the returned sizes are still always 0. Now, even reading port statistics doesnt work. Returned value is 0. The code is already posted to this email. ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Need help regarding querying statistics from switches
On Thu, 10 Dec 2009 18:02:57 -0800, Guanyao Huang gyhu...@ucdavis.edu wrote: In my topology I periodically ping between hosts. However, I find the packet_count and byte_count from the switch are always 0. I am confirmed that I successfully received ofp_flow_stats from the desired switch. The central controller maintains flow information and I query flows with desired nw_proto, nw_src, nw_dst, tp_src, tp_dst, and in_port. Other fields I use wildcard. How frequent are the pings and how are the flows being installed. One possibility here is that the flows are being installed with a timeout shorter than the interval between pings. If that is the scenario, the behavior could be: 1. ping arrives at switch 2. switch does not find a matching flow, forwards to controller for decision. 3. controller installs flow in switch to match future pings with a soft timeout. The controller may not count the stats from the initial ping packet received in step 2 as being part of this new flow. 4. nothing matches flow for the soft timeout. flow is removed from switch. 5. goto step 1 Might this be what is happening? --- Keith ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
[nox-dev] Need help regarding querying statistics from switches
Hello Sorry to bother others. I one question regarding querying flow statistics from switches through struct ofp_stats_request. I am using nox 5.0 In my topology I periodically ping between hosts. However, I find the packet_count and byte_count from the switch are always 0. I am confirmed that I successfully received ofp_flow_stats from the desired switch. The central controller maintains flow information and I query flows with desired nw_proto, nw_src, nw_dst, tp_src, tp_dst, and in_port. Other fields I use wildcard. When I use tcpreplay to replay some big packets, I find that the returned size are not always 0. However, flows in pcap file expire quickly and it is not easy to debug. Is it true that the returned size will always be 0 if the packet is small? ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Need help regarding querying statistics from switches
Sorry, I was wrong in saying my program can query flow statistics of
large flows. It cant query statistics of flows, no matter large or
small.
But I can query statistics of port. That is successful.
Below is my code to query flow statistics:
size_t size = sizeof(ofp_stats_request) + sizeof(ofp_flow_stats_request);
boost::shared_arraychar raw_of(new char[size]);
ofp_stats_request *ost = (ofp_stats_request*)raw_of.get();
ost-header.version = OFP_VERSION;
ost-header.type = OFPT_STATS_REQUEST;
ost-header.length = htons(size);
ost-header.xid = htonl(STATS_DETAIL_ID);
ost-type = htons(OFPST_FLOW);
ost-flags = htons(0);
ofp_flow_stats_request* ofsr =
(ofp_flow_stats_request*)(((uint8_t*)ost-body)+0);
ofsr-table_id = 0xff; //request for all flow table
ofsr-out_port = OFPP_NONE;
for(.){//some loop code
ofp_match tmpmatch;
tmpmatch.nw_src=itflow-first.nw_src;
tmpmatch.nw_dst=itflow-first.nw_dst;
tmpmatch.tp_src=itflow-first.tp_src;
tmpmatch.tp_dst=itflow-first.tp_dst;
tmpmatch.nw_proto=itflow-first.nw_proto;
tmpmatch.in_port=itflow-first.in_port;
tmpmatch.wildcards=htonl(OFPFW_DL_VLAN | OFPFW_DL_SRC |
OFPFW_DL_DST | OFPFW_DL_TYPE | OFPFW_TP_SRC | OFPFW_TP_DST );
memcpy(ofsr-match, tmpmatch, sizeof(ofp_match));
if( 0 != send_openflow_command((it-first), ost-header, false) ){
;
}
}
When parsing struct ofp_flow_stats, I find it is exactly the flow I
want to query. But the packet_count and byte_count are always 0.
Is this some setting problem?
On Thu, Dec 10, 2009 at 6:02 PM, Guanyao Huang gyhu...@ucdavis.edu wrote:
Hello
Sorry to bother others. I one question regarding querying flow
statistics from switches through struct ofp_stats_request. I am using
nox 5.0
In my topology I periodically ping between hosts. However, I find the
packet_count and byte_count from the switch are always 0. I am
confirmed that I successfully received ofp_flow_stats from the desired
switch. The central controller maintains flow information and I query
flows with desired nw_proto, nw_src, nw_dst, tp_src, tp_dst, and
in_port. Other fields I use wildcard.
When I use tcpreplay to replay some big packets, I find that the
returned size are not always 0. However, flows in pcap file expire
quickly and it is not easy to debug.
Is it true that the returned size will always be 0 if the packet is small?
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Re: [nox-dev] Need help regarding querying statistics from switches
Have you verified that the counter is correct on the switch via dpctl
dump-flows?
Sorry, I was wrong in saying my program can query flow statistics of
large flows. It cant query statistics of flows, no matter large or
small.
But I can query statistics of port. That is successful.
Below is my code to query flow statistics:
size_t size = sizeof(ofp_stats_request) + sizeof(ofp_flow_stats_request);
boost::shared_arraychar raw_of(new char[size]);
ofp_stats_request *ost = (ofp_stats_request*)raw_of.get();
ost-header.version = OFP_VERSION;
ost-header.type = OFPT_STATS_REQUEST;
ost-header.length = htons(size);
ost-header.xid = htonl(STATS_DETAIL_ID);
ost-type = htons(OFPST_FLOW);
ost-flags = htons(0);
ofp_flow_stats_request* ofsr =
(ofp_flow_stats_request*)(((uint8_t*)ost-body)+0);
ofsr-table_id = 0xff; //request for all flow table
ofsr-out_port = OFPP_NONE;
for(.){//some loop code
ofp_match tmpmatch;
tmpmatch.nw_src=itflow-first.nw_src;
tmpmatch.nw_dst=itflow-first.nw_dst;
tmpmatch.tp_src=itflow-first.tp_src;
tmpmatch.tp_dst=itflow-first.tp_dst;
tmpmatch.nw_proto=itflow-first.nw_proto;
tmpmatch.in_port=itflow-first.in_port;
tmpmatch.wildcards=htonl(OFPFW_DL_VLAN | OFPFW_DL_SRC |
OFPFW_DL_DST | OFPFW_DL_TYPE | OFPFW_TP_SRC | OFPFW_TP_DST );
memcpy(ofsr-match, tmpmatch, sizeof(ofp_match));
if( 0 != send_openflow_command((it-first), ost-header, false) ){
;
}
}
When parsing struct ofp_flow_stats, I find it is exactly the flow I
want to query. But the packet_count and byte_count are always 0.
Is this some setting problem?
On Thu, Dec 10, 2009 at 6:02 PM, Guanyao Huang gyhu...@ucdavis.edu wrote:
Hello
Sorry to bother others. I one question regarding querying flow
statistics from switches through struct ofp_stats_request. I am using
nox 5.0
In my topology I periodically ping between hosts. However, I find the
packet_count and byte_count from the switch are always 0. I am
confirmed that I successfully received ofp_flow_stats from the desired
switch. The central controller maintains flow information and I query
flows with desired nw_proto, nw_src, nw_dst, tp_src, tp_dst, and
in_port. Other fields I use wildcard.
When I use tcpreplay to replay some big packets, I find that the
returned size are not always 0. However, flows in pcap file expire
quickly and it is not easy to debug.
Is it true that the returned size will always be 0 if the packet is small?
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___
nox-dev mailing list
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http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Fwd: help! i have problem wiht testing 'nox_core tests'
Hi Noah, It looks like the problem might be that the instructions are somewhat unclear. The following line should be run as a single command: apt-get install autoconf automake g++ libtool python python-twisted swig libboost1.35-dev libxerces-c2-dev libssl-dev make On the webpage, there is a line-break between python-twisted and swig packages, and it seem that you may have interpreted this as starting a new command. There is no need for you to run 'swig' yourself. Once 'swig' is installed by apt-get, it will be invoked by the build system when you type 'make'. Dan Noah wrote: Hi Dan, I'm really thank your reply. As you said, I checked both files are exist and build is complete. I found out that build is incomplete. When I checked using 'make check', they show me some error. Test suite NOX failed with: 25 assertions out of 96 passed 71 assertions out of 96 failed 3 test cases out of 74 passed 71 test cases out of 74 failed 71 test cases out of 74 aborted FAIL: nox.test 1 of 1 test failed Please report to cont...@noxrepo.org make[3]: *** [check-TESTS] error 1 make[3]: Leaving directory `/root/noxcore/build/src' make[2]: *** [check-am] error 2 make[2]: Leaving directory `/root/noxcore/build/src' make[1]: *** [check-recursive] error1 make[1]: Leaving directory `/root/noxcore/build/src' make: *** [check] error 2 When I build nox, I didn't know how to handle swig libboost1.35-dev libxerces-c2-dev libssl-dev make' , because I typed that command, is didn't work in terminal, just show r...@nox-desktop:~# swig libboost1.35-dev libxerces-c2-dev libssl-dev make swig error : Unrecognized option libboost1.35-dev swig error : Unrecognized option libxerces-c2-dev swig error : Unrecognized option libssl-dev Use 'swig -help' for available options. so, I just install like 'apt-get install libboost1.35-dev libxerces-c2-dev libssl-dev' does it make some problem? and if I had to use swig, how can I handle it? 2009/7/14 Dan Wendlandt d...@nicira.com: Hi Noah, From what directory are you running ./nox_core tests? From that directory, does the file nox/netapps/user_event_log/pyuser_event_log.py exist? If not, does the file nox/netapps/switchstats/pycswitchstats.py exist? I assume the build completely successfully with no errors. dan Noah wrote: Hi, I need to run the noxrepo scripts for OpenFlow Switch. So, following the NOX installation, I installed nox. After that i tried to ./nox_core tests. Then there's an error message like below 1|sqlite3-impl|WARN:Transactional storage file not given in the command line; defaulting to 'testing.sqlite' 2|nox|ERR:Cannot change the state of 'tests' to INSTALLED: 'tests' has an unmet dependency: 'pyuser_event_log' ran into an error: cannot import a Python module 'nox.netapps.user_event_log.pyuser_event_log': ImportError: No module named netapps.user_event_log.pyuser_event_log can you tell me what's the problem?? i'm working on Ubuntu 9.04. ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
Re: [nox-dev] Fwd: help! i have problem wiht testing 'nox_core tests'
Hi Dan. Thank your help, But, unfortunately, I build with that one line command there's still same problem, 2009/7/16 Dan Wendlandt d...@nicira.com: Hi Noah, It looks like the problem might be that the instructions are somewhat unclear. The following line should be run as a single command: apt-get install autoconf automake g++ libtool python python-twisted swig libboost1.35-dev libxerces-c2-dev libssl-dev make On the webpage, there is a line-break between python-twisted and swig packages, and it seem that you may have interpreted this as starting a new command. There is no need for you to run 'swig' yourself. Once 'swig' is installed by apt-get, it will be invoked by the build system when you type 'make'. Dan Noah wrote: Hi Dan, I'm really thank your reply. As you said, I checked both files are exist and build is complete. I found out that build is incomplete. When I checked using 'make check', they show me some error. Test suite NOX failed with: 25 assertions out of 96 passed 71 assertions out of 96 failed 3 test cases out of 74 passed 71 test cases out of 74 failed 71 test cases out of 74 aborted FAIL: nox.test 1 of 1 test failed Please report to cont...@noxrepo.org make[3]: *** [check-TESTS] error 1 make[3]: Leaving directory `/root/noxcore/build/src' make[2]: *** [check-am] error 2 make[2]: Leaving directory `/root/noxcore/build/src' make[1]: *** [check-recursive] error1 make[1]: Leaving directory `/root/noxcore/build/src' make: *** [check] error 2 When I build nox, I didn't know how to handle swig libboost1.35-dev libxerces-c2-dev libssl-dev make' , because I typed that command, is didn't work in terminal, just show r...@nox-desktop:~# swig libboost1.35-dev libxerces-c2-dev libssl-dev make swig error : Unrecognized option libboost1.35-dev swig error : Unrecognized option libxerces-c2-dev swig error : Unrecognized option libssl-dev Use 'swig -help' for available options. so, I just install like 'apt-get install libboost1.35-dev libxerces-c2-dev libssl-dev' does it make some problem? and if I had to use swig, how can I handle it? 2009/7/14 Dan Wendlandt d...@nicira.com: Hi Noah, From what directory are you running ./nox_core tests? From that directory, does the file nox/netapps/user_event_log/pyuser_event_log.py exist? If not, does the file nox/netapps/switchstats/pycswitchstats.py exist? I assume the build completely successfully with no errors. dan Noah wrote: Hi, I need to run the noxrepo scripts for OpenFlow Switch. So, following the NOX installation, I installed nox. After that i tried to ./nox_core tests. Then there's an error message like below 1|sqlite3-impl|WARN:Transactional storage file not given in the command line; defaulting to 'testing.sqlite' 2|nox|ERR:Cannot change the state of 'tests' to INSTALLED: 'tests' has an unmet dependency: 'pyuser_event_log' ran into an error: cannot import a Python module 'nox.netapps.user_event_log.pyuser_event_log': ImportError: No module named netapps.user_event_log.pyuser_event_log can you tell me what's the problem?? i'm working on Ubuntu 9.04. ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
[nox-dev] Fwd: help! i have problem wiht testing 'nox_core tests'
Hi Dan, I'm really thank your reply. As you said, I checked both files are exist and build is complete. I found out that build is incomplete. When I checked using 'make check', they show me some error. Test suite NOX failed with: 25 assertions out of 96 passed 71 assertions out of 96 failed 3 test cases out of 74 passed 71 test cases out of 74 failed 71 test cases out of 74 aborted FAIL: nox.test 1 of 1 test failed Please report to cont...@noxrepo.org make[3]: *** [check-TESTS] error 1 make[3]: Leaving directory `/root/noxcore/build/src' make[2]: *** [check-am] error 2 make[2]: Leaving directory `/root/noxcore/build/src' make[1]: *** [check-recursive] error1 make[1]: Leaving directory `/root/noxcore/build/src' make: *** [check] error 2 When I build nox, I didn't know how to handle swig libboost1.35-dev libxerces-c2-dev libssl-dev make' , because I typed that command, is didn't work in terminal, just show r...@nox-desktop:~# swig libboost1.35-dev libxerces-c2-dev libssl-dev make swig error : Unrecognized option libboost1.35-dev swig error : Unrecognized option libxerces-c2-dev swig error : Unrecognized option libssl-dev Use 'swig -help' for available options. so, I just install like 'apt-get install libboost1.35-dev libxerces-c2-dev libssl-dev' does it make some problem? and if I had to use swig, how can I handle it? 2009/7/14 Dan Wendlandt d...@nicira.com: Hi Noah, From what directory are you running ./nox_core tests? From that directory, does the file nox/netapps/user_event_log/pyuser_event_log.py exist? If not, does the file nox/netapps/switchstats/pycswitchstats.py exist? I assume the build completely successfully with no errors. dan Noah wrote: Hi, I need to run the noxrepo scripts for OpenFlow Switch. So, following the NOX installation, I installed nox. After that i tried to ./nox_core tests. Then there's an error message like below 1|sqlite3-impl|WARN:Transactional storage file not given in the command line; defaulting to 'testing.sqlite' 2|nox|ERR:Cannot change the state of 'tests' to INSTALLED: 'tests' has an unmet dependency: 'pyuser_event_log' ran into an error: cannot import a Python module 'nox.netapps.user_event_log.pyuser_event_log': ImportError: No module named netapps.user_event_log.pyuser_event_log can you tell me what's the problem?? i'm working on Ubuntu 9.04. ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
