Hi,
Happy new year! I like how this question comes up once every year, and how we
throw the same old arguments at it. So in line with traditions, here is mine.
:-)
The semantic difference is huge between the acknowledgement and a barrier:
Acknowledgement means: Tell me when this and only this
-Original Message-
From: Aravindhan Dhanasekaran [mailto:adha...@ncsu.edu]
Sent: Wednesday, October 15, 2014 8:15 PM
To: Zoltán Lajos Kis; openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] Using queues in OpenFlow soft switch 13
On 10/12/2014 03:05 PM, Zoltán Lajos Kis
...@ncsu.edu]
Sent: Saturday, October 11, 2014 6:17 PM
To: Zoltán Lajos Kis; openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] Using queues in OpenFlow soft switch 13
On 10/11/2014 01:22 AM, Zoltán Lajos Kis wrote:
Hello Aravind,
You still need to use an output action in step 3
Hello Aravind,
You still need to use an output action in step 3. The output action selects the
port to use, and the queue id selects the queue on the given output port.
BR,
Zoltan
-Original Message-
From: openflow-discuss [mailto:openflow-discuss-
boun...@lists.stanford.edu] On Behalf
:55 PM
To: Zoltán Lajos Kis; openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] Openflow tables
thanks Zoltan,
Would you please point me to the exact Table Feature instruction/field that can
request an openflow switch to add a specific table to the pipeline?
On Tuesday, 7 October
Yes it can ask; and if the switch can’t do so it will reply with an error.
From: Emma Anderson [mailto:em.anderso...@yahoo.com]
Sent: Wednesday, October 08, 2014 4:28 PM
To: Zoltán Lajos Kis; openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] Openflow tables
The last paragraph
Hello,
In OpenFlow 1.3 and later the Table Features message is bidirectional. The
controller can use this message to request a new pipeline (set of new tables)
from the switch.
Also, there is ongoing work in ONF on Table Type Patterns (TTPs) [1]. These are
predefined pipelines that the
SwitchFeatures - One per established OpenFlow channel. So unless you force
reconnections, you should expect six.
PortStatus - One per port status change. Unless you mess with the ports, you
should expect zero.
PacketIn - Depends on the installed flows in switches and the traffic matrix.
Best,
Hi,
Can you provide a link to “the” tutorial?
Zoltan
From: openflow-discuss [mailto:openflow-discuss-boun...@lists.stanford.edu] On
Behalf Of ? ?
Sent: Monday, May 19, 2014 12:07 PM
To: openflow-discuss@lists.stanford.edu
Subject: [openflow-discuss] Problem with opening POX file
Hi,
I
Hi,
Also there're some interesting papers at last year's hotsdn:
http://conferences.sigcomm.org/sigcomm/2013/hotsdn.php. And here are the recent
slides for ONOS: http://www.slideshare.net/ON_LAB/onos-at-ons-2014.
For development there is also ODL, which does support some form of clustering:
Hi,
You can only support the second one. Buckets have action sets, so there can be
at most one of every action type in a bucket.
Regards,
Zoltan
From: openflow-discuss [mailto:openflow-discuss-boun...@lists.stanford.edu] On
Behalf Of LIANG YANG
Sent: Tuesday, April 15, 2014 9:04 AM
To:
, March 20, 2014 10:07 AM
To: Zoltán Lajos Kis
Cc: openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] Sending a OFPFlowMod to a specific switch from
the controller
Hi Zoltan,
Thanks for the reply.. Yes I am trying to implement a controller module..
My requirement is, I want to send
Hi Bruce,
That is the only way to push MPLS on packets: first you need to push a label,
which creates a zero label (unless there is already a label on the packet, in
which case that label is copied), and then you need a set action to specify the
label you want. This is described in 5.12.1 of
]
Sent: Tuesday, January 14, 2014 9:51 AM
To: Zoltán Lajos Kis; openflow-discuss
Subject: Re: RE: [openflow-discuss] Pushing mpls tags
Hi,Zoltan,
Thanks for your quick reply.
I am using CPqD ofsoftswitch13 from https://github.com/CPqD/ofsoftswitch13. I
use dpctl to insert flows.Here is its output
/blob/master/udatapath/dp_actions.c#L1077,
and continue experimenting.
Regards,
Zoltan
From: bruce.lo...@gmail.commailto:bruce.lo...@gmail.com
[mailto:bruce.lo...@gmail.com]
Sent: Tuesday, January 14, 2014 9:51 AM
To: Zoltán Lajos Kis; openflow-discuss
Subject: Re: RE: [openflow-discuss] Pushing
Hi,
If you want to send packets back on the input port, you must use the
OFPP_IN_PORT value for output port, not the actual port number.
Implementations usually reject flows that use the same port number for in_port
and output port (e.g., [1]), as they would always drop packets. Did you check
To: Zoltán Lajos Kis
Cc: openflow-discuss Discuss
Subject: Re: [openflow-discuss] add-flow for WLAN in tp-link 1043nd
Thank you so much Zoltan Lajos Kis for your great help and suggestion. I did it
using OFPP_IN_PORT. But I have only one problem when working with OpenWrt on TP
Link 1043. When
Yes it is; from every perspective.
Zoltan
-Original Message-
From: Shuva Jyoti Kar
Sent: Friday, September 27, 2013 10:20 AM
To: Zoltán Lajos Kis; openflow-discuss@lists.stanford.edu
Subject: RE: openflow-discuss Digest, Vol 59, Issue 28
But is it Pkt out/Pkt in , from the controller
Here is a brief description:
http://blogs.ixiacom.com/ixia-blog/discovery-in-openflow-networks-at-onf-plugfest/
The only mistake here is that there should be a separate packet_out/lldp
message per switch and per port. If the controller were to do it as described
here (one packet_out/lldp for
Hi,
Looking at the proposal, it seems it could be implemented with existing group
entries (available since OF 1.1).
Just install a select group with two buckets, one sending packet_in's, the
other dropping packets, and set the
Bucket weights to get the desired sampling rate.
OpenFlow 1.3 also
Hi,
Any chance you are experiencing the effect of the burst tolerance associated
with the meters? I believe that when you switch to the new meter, your traffic
quickly consumes the burst tokens - causing the peak - and once the tokens are
depleted, the meter starts working.
It would be great
I think ports can go from 1 to OFPP_MAX inclusive, and the mistake is in the
comment on page 88 (should be = OFPP_MAX).
Every xxx_MAX constant in OpenFlow refers to the last usable id (OFPP_MAX,
OFPG_MAX, OFPM_MAX, OFPTT_MAX, ...). In most cases the structs explicitly say
so.
Ports are only
...@nicira.com]
Sent: Tuesday, April 30, 2013 8:40 AM
To: Zoltán Lajos Kis
Cc: Bertrand Bonnefoy-Claudet; openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] Port numbering and OFPP_MAX
The OpenFlow 1.0 reference implementation code includes several uses of
OFPP_MAX. Most of them imply
Hi,
The control plane for the OF switch is running in the controller. The OF switch
will proxy control-plane packets between the controller and the non-OpenFlow
switches (via packet-in, packet-out OF messages). The controller software
understands the routing exchange, and installs OF flows to
Check out Oflops:
http://www.openflow.org/wk/index.php/Oflops
Zoltan
From: openflow-discuss-boun...@lists.stanford.edu
[mailto:openflow-discuss-boun...@lists.stanford.edu] On Behalf Of Amadine
Florence
Sent: Friday, April 12, 2013 11:00 AM
To: openflow-discuss@lists.stanford.edu
Subject:
Did you check this one?
https://github.com/noxrepo/pox/blob/master/pox/forwarding/l2_learning.py
Zoltan.
From: openflow-discuss-boun...@lists.stanford.edu
[openflow-discuss-boun...@lists.stanford.edu] on behalf of Prafulla Chandra
[prafull...@gmail.com]
Sent:
Hi,
ONF is working on the specifications, but does not provide a reference
implementation.
Fortunately there are open source implementations though :)
OF 1.2: https://github.com/CPqD/OpenFlow-1.2-Tutorial (see links on page)
OF 1.3: https://github.com/CPqD/ofsoftswitch13 (work in progress)
The OF 1.3 specification says the following on the body of a flow stats reply
(p. 63.):
The fields consist of those provided in the flow_mod that created the flow
entry...
So in my reading whatever was sent by the controller should be sent back
unmodified by the switch upon stats query,
Hi,
Those statistics are for the ports of the switch only , and do not involve
datapath processing (i.e. flow entries).
They basically count packets that were received, but dropped before datapath
processing (rx), and packets
that were processed and output by the datapath, but dropped before
Hi,
The table_stats_reply has a stats attribute, which contains an array of
ofp_table_stats. The max_entries attribute is in ofp_table_stats.
Regards,
Zoltan.
From: openflow-discuss-boun...@lists.stanford.edu
-Original Message-
From: openflow-discuss-boun...@lists.stanford.edu
[mailto:openflow-discuss-boun...@lists.stanford.edu] On
Behalf Of Rob Sherwood
Sent: Wednesday, July 04, 2012 4:00 AM
To: chenyangseamoon
Cc: openflow-discuss讨论组
Subject: Re: [openflow-discuss] Does FlowVisor
Hi,
Address already used suggests that you have some application running, which
already listens on port 6633 (e.g. NOX).
You could also try using --platform=local instead of setting remote plus the
host and port.
Regards,
Zoltan.
From:
Yes it is. Grep for queue or slicing to find the details in the code.
Z.
-Original Message-
From: openflow-discuss-boun...@lists.stanford.edu
[mailto:openflow-discuss-boun...@lists.stanford.edu] On
Behalf Of Heryandi
Sent: Wednesday, June 20, 2012 4:54 AM
To:
Hi Anil,
To put the story short in my interpretation - others could correct me if I am
wrong:
Implementations - including software switches - differ in the precision they
can provide, up to the ~100ms range. So basically a granularity of seconds is
what can always be guaranteed.
(Even though
Hi,
After the flow_mod you can send a barrier_request; when you get the
barrier_reply for that, it means that the flow is installed (unless you already
got an error message).
Z.
-Original Message-
From: openflow-discuss-boun...@lists.stanford.edu
Hi,
In short you would need to:
- define a new match structure, that contains all the protocols from the
standard you need, plus your shim_header field
- extend the switch code - in particular the parse-tree - to be able to parse
the datapath packets containing your shim_header
- optionally
the OpenFlow 1.1 spec.
Regards,
Zoltan.
-Original Message-
From: Rob Sherwood [mailto:rob.sherw...@bigswitch.com]
Sent: Wednesday, September 07, 2011 5:12 PM
To: Zoltán Lajos Kis
Cc: Derick Winkworth; openflow-discuss@lists.stanford.edu
Subject: Re: [openflow-discuss] OpenFlow v1.1 tag
Hi,
One more thing that is a bit ambigouos, which I'd like to get clarified (or at
least hear other people's opinion about it).
If I have the following scenario:
- A flow in table 0 matches the incoming packet
- puts an output-action on port 0 to the action set
- sends the packet to table 1
, 2011 7:43 PM
To: Zoltán Lajos Kis
Cc: openflow-disc...@mailman.stanford.edu
Subject: Re: [openflow-discuss] OpenFlow 1.1 ofp_packet_in
padding clarification
On Fri, Aug 26, 2011 at 11:18:27AM +0200, Zolt?n Lajos Kis wrote:
I need some clarification on the data field for
ofp_packet_in
is different, how does the
controller know where the packet starts? - confused -
Z.
-Original Message-
From: yap...@gmail.com [mailto:yap...@gmail.com] On Behalf Of kk yap
Sent: Monday, August 29, 2011 4:44 PM
To: Zoltán Lajos Kis
Cc: Ben Pfaff; openflow-disc...@mailman.stanford.edu
Subject
Hi,
I need some clarification on the data field for ofp_packet_in. The OF 1.1 spec
contains the following comment:
/* Ethernet frame, halfway through 32-bit word, so the IP header is 32-bit
aligned. The amount of data is inferred from the length field in the header.
Because of padding,
Hey Rob,
Thanks for the slides, this is a great addition to the existing OpenFlow
literature. Any chance you could also tell us, where this was presented, and to
what audience?
Also thanks for mentioning Ericsson's OF 1.1 work. Let me clarify what hacked
means, because it might sound too
In OF 1.1 there is the select group for this purpose.
Z.
-Original Message-
From: openflow-discuss-boun...@lists.stanford.edu
[mailto:openflow-discuss-boun...@lists.stanford.edu] On
Behalf Of Ben Pfaff
Sent: Tuesday, August 16, 2011 5:00 PM
To: Alexey Bogaevskiy
Cc:
for experimenter groups, so you can use those without any
problem.
From: Alexey Bogaevskiy [mailto:arbog...@gmail.com]
Sent: Tuesday, August 16, 2011 5:33 PM
To: Zoltán Lajos Kis
Cc: Rob Sherwood; Opeflow Mailing List
Subject: Re: [openflow-discuss] Splitting a flow
What
Hi,
These are some wiki-pages which helped me understand how oftest is supposed to
work:
http://www.openflow.org/wk/index.php/OFTestTutorial
http://www.openflow.org/wk/index.php/OFTestReadme
Regards,
Zoltan.
-Original Message-
From: openflow-discuss-boun...@lists.stanford.edu
45 matches
Mail list logo
