> Thank you Srini Seetharaman ！
> Besides conventional IP routing,which type of communication does nox
> support?
Basic NOX comes with MAC learning switch and shortest path routing.
> How the nox decide a path from a source host to the destination host?
If you used the routing mod
No, you need to write code to make it behave as a IP router.
Please look at this earlier thread:
http://noxrepo.org/pipermail/nox-dev/2011-April/007494.html
On Thu, Sep 1, 2011 at 7:23 PM, linbo wrote:
> I want to know whether nox implement the function that enalbe two hosts in
> different subne
> No it got stuck at
> 00040|openflow|DBG:Passive tcp interface bound to port 6636
> 00041|nox|INFO:nox bootstrap complete
When you do not specify any module, the controller does not move any
further. If you run it as "./nox_core -v -i ptcp:6635 pytutorial",
then you will be activity when traffic
Looks like some other application is already using port 6633. Please
see if there are other NOX processes already running. To use a
different port , please run as follows: "./nox_core -i ptcp:"
Srini.
On Sun, Aug 14, 2011 at 5:13 PM, Mariam <08bicsemmunt...@seecs.edu.pk> wrote:
> Hi!
> i'
A cleared definition can be found in the linkload.hh file:
/** Get link load ratio.
* @param dpid datapath id of switch
* @param port port number
* @param tx transmit load
* @return ratio of link bandwidth used (-1 if invalid result)
*/
float get_link_load_ratio(datapathid dpid, uint16_t port
Hi Karim
I don't think the is_on_path_location method does what you require.
I guess you can look at Routing_module::setup_route and write your own
method to iterate thro' the links in a route. If you already did that,
it'll help the list to send a copy of your implementation.
Thanks
Srini.
On F
Hi Min-Hyup
You will need to write code in the controller (i.e., NOX) for taking
care of this VLAN-level partitioning.
Srini.
2011/7/4 Min-Hyup KANG
>
> Dear all,
>
> I would like to divide some VLAN domain.
>
> so, I wonder whether I have to write some code in NOX, or set pronto itself.
>
> p
Hi Min-Hyup
What error do you get? Do you not see the switch connecting
successfully with the controller? Please run in verbose mode and paste
the output of NOX-Zaku.
Thanks
Srini.
2011/6/29 Min-Hyup KANG
>
> Hi All,
>
> Does Pronto 3290(indigo-1.0-web-rc3) provide NOX destiny ?
>
> When I test
nstalled?
>
> -- Murphy
>
> On Tuesday, June 14, 2011 02:25:47 PM Srini Seetharaman wrote:
>> Hi
>> I am trying to compile the latest head of NOX-Zaku on an Ubuntu 10.04
>> machine. I didn't receive any errors when I ran boot.sh. But, when I
>> ran configure,
Hi
I am trying to compile the latest head of NOX-Zaku on an Ubuntu 10.04
machine. I didn't receive any errors when I ran boot.sh. But, when I
ran configure, I got the following error:
checking whether the Boost::UnitTestFramework library is available... yes
configure: error: Could not link against
I'm not sure. Maybe someone else in the list knows the right way to import
it.
On Sat, Jun 11, 2011 at 3:01 AM, 颜玮 wrote:
>
> I am wirting a program to print the location of each host.And,i think
> *Authenticator* can help me with that. My plan is to call *
> get_authed_locations(self,dladdr
You may be able to listen for Host_event (with filter
Host_event.action == Action.ADD), and track the datapath_id and port
of each host.
In the python side, I think it is Host_bind_event.
2011/6/10 颜玮 :
> Hi all,
> I met difficulty in using Authontication component,and i need your help.
> her
Hi Yi-Shou
You could possibly use the following to approx for RTT
time: timestamp(barrier_reply) - timestamp(fwd pkt_in), assuming the
barrier_request is sent with the pkt_out of the reverse direction ICMP.
On Wed, May 11, 2011 at 8:16 AM, false wrote:
> Hi,
>
> I have a problem about the nox co
Hi Luciano
I guess you're using the ofp_packet_in->total_len value? That is
indeed the length of the packet that came into the port which
generated the pkt_in.
If you're looking to compute the overall traffic sent from a server,
you can also use the flow_exp message and sum it for all the flows
se
Hi Alexander
Can you be more specific about what error you're getting?
You are not specifying any output action. Try adding that too like:
actions = [ [openflow.OFPAT_SET_DL_DST, "00:00:00:00:00:02"],
,[openflow.OFPAT_OUTPUT, [0, outport]] ]
What switch are you using?
Thanks
Srini.
On Fri, May
Hi Marwen
I believe this is a problem with your NOX code. Could you please mail
to the nox-dev list relevant pieces of your code and folks can help
you figure out what is going wrong?
Please drop openflow-discuss list from the future replies.
Thanks
Srini.
On Mon, May 2, 2011 at 3:24 AM, marwen
Hi
This question of performance comparison is more appropriate for the
openflow-discuss list that I've copied here. Please drop nox-dev in
subsequent mails.
Thanks
Srini.
On Thu, Apr 28, 2011 at 5:42 AM, Christian Esteve Rothenberg
wrote:
> Hamilton,
>
> You can add Maestro (Rice University) and
Hi Ibrahim
Ping will not work because NOX routing module does not provide
conventional IP routing. You will need to code it yourself.
There is another thread that had similar concern:
http://www.mail-archive.com/nox-dev@noxrepo.org/msg02563.html
For IP routing to work across subnets:
- The IP rou
Hi XH
NOX does not provide IP routing services in the conventional sense (as
mentioned in the doc). So, the IP gateway in your model must be a
non-OF device. If the gateway for your subnet is OpenFlow-enabled and
NOX is the controller, the routing module will not be able to perform
what you need to
This question is more appropriate to the openflow-discuss list copied here.
Could someone that participated in the earlier spec process please
comment on what the reasoning behind the OFPC_FRAG_DROP is?
I see that the code is present to drop the packets in the userspace
switch. So, I guess many s
Hi linbo
Could you please verify the connectivity by setting up an ethernet
bridge (using brctl) between the eth1 and eth2? If the ping worked
fine in the bridge, it should work fine with OpenFlow switching.
Thanks
Srini.
2011/4/26 linbo :
> Yes，I tried the command " ./nox_core -v -i ptcp:6633 p
Hi Max
This mail is more appropriate for the nox-dev list that I've copied here.
> I now can ping two machines across a VLAN using NOX and pyswitch. However,
> the latter does not seem to create a flow for the VLAN pings as each of them
> shows up at the controller. I assume the pyswitch isn't a
Hi
There is no command line command for NOX to perform the actions. You
need to write code in C++ or Python to achieve any action you need.
dpctl is the command that will let you do all that you need.
Thanks
Srini.
On Mon, Apr 25, 2011 at 7:36 PM, ??? wrote:
> Hi:everyone
>
> I am a person new
Hi Harry
OF ver 1.0 cannot set a time-to-live value on a packet or a timeout value.
The routing::setup_flow() function is defined in the following file:
noxzaku/src/nox/netapps/routing/routing.cc
Srini.
On Mon, Apr 11, 2011 at 7:44 AM, Harry wrote:
> Hi everyone!
> Is there anyway to control pa
Hi Yi-Shou
The spanning_tree module was written for earlier version of NOX. I don't
think it was ever tested with the latest version.
Please let us know if you there are certain changes you can make to the
spanning_tree module to make it work with NOX-Zaku. We can post that code
online in the wiki
Hi Leonardo
This question is more appropriate for the nox-dev mailing list.
Could you please retry "git clone git://noxrepo.org/nox" ? The old
version you downloaded is for versions of OpenFlow earlier than 1.0.
We don't really support it at this point (I hope your NetFPGA switch
is also ver1.0)
Hi Min-Hyup Kang:
Generally SNAC is used as the controller for the production network
and NOX is used as the controller for experiments. When you want to
run both (production traffic and experiments) in your network then you
need to use the FlowVisor. All 3 software can run on the same PC if
you wi
doing step 7?
>>>>>
>>>>> Because the action of pkt_out is "OFPP_TABLE".
>>>>> (the packet in pkt_out does not match to the entry that is installed by
>>>>> flow_mod, since the matching entry says nw_proto=0).
>>>>>
>>
can even start looking
> at this.
>
> Regards
> KK
>
> On 13 January 2011 11:02, Srini Seetharaman wrote:
>> We don't know who sent it, but it came from outside our network. If it
>> is easy to take down a network by just sending 1 invalid packet, I'd
>> be
to
> understand the circumstance for which we are getting the packet before
> commenting on the right way to handle this.
>
> Regards
> KK
>
>
> On 13 January 2011 10:38, Srini Seetharaman wrote:
>> When someone sends the attached packet to a switch, it generates an
When someone sends the attached packet to a switch, it generates an
infinite loop of packet_ins in our production network. This is because
this incoming tcp packet has nw_proto=6 and tcp port numbers of "0",
but outgoing flow_mod has nw_proto of "0" and tcp port numbers of "0".
So, the packet_out g
using
> wireshark.
>
> (According to your response this should be fine? )
>
> Aaron
>
> On Wed, Jan 5, 2011 at 5:31 PM, Srini Seetharaman
> wrote:
>>
>> Hi Aaron
>> Only pure-OF switches (like Pronto switch with Indigo firmware) will
>> send the VLAN tag t
Hi Aaron
Only pure-OF switches (like Pronto switch with Indigo firmware) will
send the VLAN tag to the controller. With others, the tag is usually
added / stripped by the VLAN configs on the switch. So, you'll not get
to see them.
Srini.
On Wed, Jan 5, 2011 at 2:23 PM, Aaron Rosen wrote:
> Hello
Hi Derek
I'm curious: How do you add flows with same match pattern and not have
them be overwritten at the switch level?
On Sun, Dec 19, 2010 at 4:46 PM, Derek Cormier
wrote:
> Let's say you add a few flows that are exactly the same using
> install_datapath_flow(). Then, you do a flow stats reque
I'm not sure if this is a problem of spanning_tree module. The ping
may be stopped because the switch is holding onto flow table entries
with invalid output action, and thereby not generating the packet_in
to the controller (A pkt_in is needed for the routing module to send
updated flow_mods with t
Hi Xiefeng
I believe the routing module will find the unique shortest path when
there is a loop. However, it will cause a broadcast storm when the
packet needs a FLOOD action. Please try using the spanning tree module
to resolve the loop:
http://www.openflowswitch.org/wk/index.php/Basic_Spanning_Tr
NOX-routing module sets the cookie field when sending the flow_mod.
All subsequent communication (like flow removed msg) will include that
pre-set cookie.At this point, I don't think that field is really used
for anything and you can set any value you want.
On Tue, Dec 21, 2010 at 1:05 AM, Derek C
Hi Fengxie
Please look in src/nox/netapps/discovery/discovery.py for the phrase
"link detected". That discovery module keeps track of the topology by
sending out LLDPs.
Srini.
On Thu, Dec 16, 2010 at 6:02 AM, 谢峰 wrote:
> Hello, all,
>
> I want to dump the topology so that I can see the topology
Hi Fengxie
Please look in src/nox/netapps/discovery/discovery.py for the phrase
"link detected". That discovery module keeps track of the topology by
sending our LLDPs.
Srini.
On Thu, Dec 16, 2010 at 3:58 AM, 谢峰 wrote:
> Hello, Akbar, Murphy
>
> I want to dump the topology so that I can see the
There seems to be Error_event that is thrown. Maybe you can bind a
handler for that. For the details of Error_event, please see
include/error-event.hh
On Fri, Dec 10, 2010 at 12:12 AM, Derek Cormier
wrote:
> Hello,
>
> I'm looking for a way to see if adding a flow failed. In the OpenFlow
> protoc
Hi FengXie
You may want to use mininet to achieve the scale you need:
http://www.openflowswitch.org/foswiki/bin/view/OpenFlow/Mininet
On Mon, Dec 13, 2010 at 7:45 AM, 谢峰 wrote:
> Hi all,
>
> I want to do some experiments to test the performance of the routing
> algorithm that nox routing componen
Hi Jean
What is the topology you're using? Do you have a loop?
On Mon, Dec 6, 2010 at 3:04 PM, Jean Tourrilhes wrote:
> Hi,
>
> I had reported this bugs a few weeks ago, and it's not
> fixed. I need to run NoX to debug the interactions between NoX and my
> switch, but if NoX does no
Sachin brought up a valid point that the switch and routing modules
are lacking on actions to take when a port or link goes down. Note
that the code available right now in NOX may cause packet loss if the
dst host moved to a new location and stays silent at the new location
(Ageing or host table fl
> Pardon my laziness in not reading the patches. I am confused here. Two
> points:
> 1) Switch does not depend on topology or discovery, so how do you get
> link failure?
Oh, with switch, I use the port_status_change event and clear flow
rules (and the archived Mac_source for the port).
> 2) T
Hi Sachin
You raise a good point. There is no code that performs the needed
cleanup on link failure. I've attached two patch files that shud work
for the switch module and the routing module. This will clear the flow
rules on the switch for that out_port that went down, and also clear
any learned M
HI Rohit
I'm not sure if this is a question appropriate to the nox-dev list. I
believe the list is intended for questions regarding developing over
NOX.
You may want to lookup a previous work called Plug-n-serve, followed
by an improved system called Aster*x, that builds a server farm with
all hos
You are right, the switch sends back a OFPFMFC_ALL_TABLES_FULL error
message to the controller. The controller can either choose to delete
some of the flows, or it can just wait for some of the flows to
naturally expire before sending new flow_mods.
On Tue, Oct 26, 2010 at 7:16 PM, wrote:
> Hi,
There's another solution online:
http://www.mail-archive.com/nox-dev@noxrepo.org/msg01448.html
On Mon, Nov 15, 2010 at 9:40 AM, Ramana Reddy wrote:
> Hi Everyone,
> I got the following error after running the following command:
> ./nox_core -i ptcp:6633 switch switch_management hostip hosttracker
Hi Rohit
Did you say you're using OpenFlow 1.0 for the switch? Which
branch/repo of NOX did you install?
On Sun, Nov 14, 2010 at 7:02 PM, Rohit Manohar wrote:
> I have installed nox and want to use a virtual testing environment using
> qemu. I have used Openflow1.0 to make the nox controller. Whe
Hi KK/Chris
This patch by itself won't work because it doesn't keep track of VLAN
IDs to reuse in the packet_out for the LLDP. Let me rewrite one for
that and send you after testing it in our HP network in Flashlab.
Srini.
On Fri, Nov 12, 2010 at 1:48 PM, kk yap wrote:
> Hi,
>
> I must say this
Hi Sachin
If you are looking to just create entries without writing any NOX
code, then you need to use "dpctl". Please do following:
$ git clone git://openflowswitch.org/openflow.git
$ cd openflow
$ git checkout -b of1.0 origin/release/1.0.0
$ ./boot.sh; ./configure; make
$ cd utilities
$ ./dpctl
Hi Diego
I see that the webservice_testui located in apps/ directory of
g...@github.com:bigswitch/snac.git . This is pretty old and I'm unsure
if it will work.
Srini.
On Fri, Sep 24, 2010 at 3:55 AM, Diego Neves da Hora
wrote:
> Hi!
>
> I'm trying to develop a webservice, so that the I can trig
Hi Stanislav
It seems to me the problem is that the spec is limiting. This might be
a message more appropriate for the openflow-discuss list.
Thanks
Srini.
On Fri, Sep 17, 2010 at 10:01 AM, Stanislav Lange
wrote:
> Hello,
>
> I would like my module to receive a list of installed flows from an Op
Hi Ali
The following three lines in the code ensure that the HP isn't
dropping the LLDP packets. So, it is not that issue.
# To insure that the LLDP src mac address is not a multicast
# address, since we have no control on choice of dpid
eth.src = '\x00' + struct.pack('!Q',dpid)[3:8]
> 1. Creates
Hi Nikhil
If you want a program to benchmark controller, checkout cbench:
http://openflow.org/wk/index.php/GEC8Tutorial#Benchmark_Your_Controller
On Mon, Sep 6, 2010 at 9:49 PM, Martin Casado wrote:
> Hey Nikhil,
>
> A few things to consider.
>
> - Nox is *not* a very efficient controller. The e
Hi Ali
Could you please let us know what you meant by "does not work"?
Is the HP switch dropping the LLDP packet that is being packet-out?
The only problem we used to have with HP switches was that if the LLPD
src MAC was a multicast address, then the switch would drop it. This
has been fixed for
Hi Ian
A few demos are public:
http://www.openflowswitch.org/wk/index.php/OpenRoads_%28n-casting%29
http://www.openflowswitch.org/wk/index.php/Aggregation
They all use the OpenFlow GUI:
http://www.openflowswitch.org/wp/gui/
But depending on what exactly you're looking for, it might be simplest
if
Thanks, Michael, for sending the pcap and the debugging info offline.
I believe we may have uncovered a NOX bug. I'll let KK and team
confirm that.
The source address you have translates to:
>>> val=array.array('B', [0, 48, 5, 204, 90, 232])
>>> val = val.tostring()
>>> val
'\x000\x05\xccZ\xe8'
T
Hi Michael
We need the detailed pcap and not the verbose mode output. Coud you
please run "tcpdump -s0 port XX -w file.pcap" and email us (KK and I)
the file offline. This is the way we will be able to look into a
packet_in to see what MAC address the NetFPGA is using.
Thanks!
Srini.
On Tue, Aug
Hi
In the NOX0.6 code, I see the following constructor in the
src/include/flow.hh. Though it is preferrable to have nw_tos at the
end to give it a default value, I think this messed up the programmer!
Any reason why you didn't have it right after nw_proto, and leave it
to the programmer to set it t
> ar...@parham-lab1:~$ sudo aptitude install libboost-filesystem1.34.1
> [sudo] password for parham:
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Reading extended state information
> Initialising package states... Done
> Writing extended state inf
Hi KK
> I thought your patch resolved this? Is this the discovery patch that
> I am sitting on?
This has to do with the dpid reported by the OF instance on the
switch. Not a problem of the discovery protocol.
___
nox-dev mailing list
nox-dev@noxrepo.o
This is a problem caused because NOX uses only the 48 least
significant bits of the datapathid, and in HP switches the datapathid
of each VLAN differs only in the most significant bit. Jean (HP) might
be able to provide a firmware to bypass this issue.
On Fri, Jun 18, 2010 at 8:23 AM, Niky Riga w
Just to add to Guanyao's observations: I wanted to mention that the
host having two bindings is something we run across often in our
Stanford setup. However, we notice it only when the topology is
changed during runtime.
Srini.
___
nox-dev mailing list
I notice that the routing module is behaving differently with NOX0.6
causing each switch en route to generate independent packet_ins, while
NOX0.4 generates only 1 packet_in. This behavior incurs higher flow
setup time.
I have a topology of client <-> hpsw3 <-> hpsw1 <-> server . I
performed a wge
Hi
I'm using the TcpSocket ::write to send packets back to a python
program. Once the program received the packet, I see that my controller
CPU is at a high load (increased from ~3% to 95+%). Any clue why this is
happening? The only piece of code I ran was:
const Msg_event& me = assert_cast
66 matches
Mail list logo
