Peng Xiao | 18 Dec 06:42 2014
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want to know the efficiency of BGPSpeaker

hi  

I want to know that if Ryu BGPSpeaker peer with a router who has more than 500K BGP internet routes(prefixes).
how much time will cost him to decode all the BGP update messages?(i think there will be 60-70K IPv4 BGP Update messages)

Is there any benchmark for this?

--

Regards,

 

Xiao Peng


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Salaheddine ZERKANE | 17 Dec 16:44 2014

NXM in Ryu

Hello everybody,

I would like to add some NXM matching fields to the ofproto_v_3 module. The latter has only 2 NXM fields and I want to use more in order to install OF rules in my OVS switch and direct my traffic on some special NXM fields like tcp_flags.  

Could you show me please how can I extend the module to accept more Nicira fields?

Thanks and regards,

Meilleures salutations,

Salaheddine ZERKANE

 

{P}

Doctorant
Cubiq

{T}

+33 (0) 2 56 35 82 11

 

 

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Toshiki Tsuboi | 17 Dec 05:25 2014
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[PATCH] bgp: support New best path selecting

In case of selecting new best path, Ryu BGPSpeaker send withdraw messages.

Signed-off-by: Toshiki Tsuboi <t.tsubo2000@...>
---
 ryu/services/protocols/bgp/info_base/base.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/ryu/services/protocols/bgp/info_base/base.py b/ryu/services/protocols/bgp/info_base/base.py
index d3bc445..8ddbb0a 100644
--- a/ryu/services/protocols/bgp/info_base/base.py
+++ b/ryu/services/protocols/bgp/info_base/base.py
 <at>  <at>  -257,6 +257,16  <at>  <at>  class NonVrfPathProcessingMixin(object):
         pm = self._core_service.peer_manager
         pm.comm_new_best_to_bgp_peers(new_best_path)

+        # withdraw old best path
+        if old_best_path and self._sent_routes:
+            for sent_route in self._sent_routes.values():
+                sent_path = sent_route.path
+                withdraw_clone = sent_path.clone(for_withdrawal=True)
+                outgoing_route = OutgoingRoute(withdraw_clone)
+                sent_route.sent_peer.enque_outgoing_msg(outgoing_route)
+                LOG.debug('Sending withdrawal to %s for %s' %
+                          (sent_route.sent_peer, outgoing_route))
+

 class Destination(object):
     """State about a particular destination.
--

-- 
1.9.3 (Apple Git-50)
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Toshiki Tsuboi | 17 Dec 04:48 2014
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Report: RyuBGPSpeaker issue

Hi, Team

I am testing Ryu BGPSpeaker.
But In case of peering down to quagga, RyuBGPSpeaker can’t work properly.

This issue is very complicated.
Please check the report in attach.

I’ve already investigated the root cause of this issue.
This issue will soon resolve in my task.

Best regards.
Tsuboi Toshiki


Attachment (Report_Technical Issue.pdf): application/pdf, 402 KiB

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Joy | 16 Dec 09:12 2014
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Padma Jayasankar | 16 Dec 09:19 2014
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Backup path computation by controller

Hi,
  I am new to Ryu framework..For my project i have to modify the openflow controller to compute backup paths along wirh the working path. Initially i uesd POX with mininet and openvswitch and implemented this. Now to use the fast fail over group type feature , i am planning to shift to Ryu..Could u please guide me hwere to start with in Ryu.
  How Rye controller handles the packet_in message

Thanks and Regards,
Padma V
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Jason Syu | 16 Dec 06:27 2014
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QoS-Discussion(II)

Dear Mr. Takahashi
    My name is Jason. I have tried the QoS example which you provided last week. I still have two more questions. Could you provide me some suggestions? Thank you! 
    First, I used the command "iperf" to observe the server's reports which included the following parameters: interval, transfer, bandwidth, jitter, lost/total and datagrams. I  also observed these parameters when I set the two clients' priority to 1. However, I could not see any obvious differences between these two sets of parameters. Do you use the same command to observe the server reports and use these parameters to check whether the priority setting worked?What parameters should I observe in this case?
    Second, I also attached another testing case to this mail. I have described the second question in the file. Please see the attachment. Could you please offer me some useful suggestions? I would appreciate your kind help.
--
Best wishes,

Jason Syu

Department of Electronic and Computer Engineering,
National Taiwan University of Science and Technology (NTUST)


Attachment (Qos-priority-example.pdf): application/pdf, 32 KiB
Attachment (another test case.pdf): application/pdf, 315 KiB
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许晨辉 | 12 Dec 10:07 2014
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Flow entry attaches to meter problem via ryu controller

Hello folks,

I have met a problem when I try to limiting rate of packet through meter table.When I designate meter_id for flow entry,I dump flows show that the flow entry can't add to openvswitch.However , I find that the packet is limited by meter band verifing according to iperf h1 h2 in mininet simulator.Does anyone have the same problem?
# partial code
inst = [parser.OFPInstructionMeter(meter_id=1),
                parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,
                                                actions)]
mod = parser.OFPFlowMod(datapath=datapath,priority=priority,
                                hard_timeout=20,
                                match=match, instructions=inst)

datapath.send_msg(mod)
#

Environment: Ubuntu + ryu + Openvswitch(OF-1.3) + mininet

Thanks very much !
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Vilius Palubinskas | 12 Dec 08:58 2014
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detect SW vendor

Hi,

I found that OVS and HP use different flow tables for setting flow rules.
It's possible to determinate switch vendor? I was using mininet OVS. And
what waitress do? I tried this code:

 <at> set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
def miss_flow (self, ev):
	datapath = ev.msg.datapath
	desc = ofctl_v1_3.get_desc_stats(datapath)
	print('desc=%s', desc.hw_desc)

In console get this error:

CONSUMES EventOFPEchoRequest
  CONSUMES EventOFPPortDescStatsReply
  CONSUMES EventOFPSwitchFeatures
connected socket:<eventlet.greenio.GreenSocket object at 0xb678572c>
address:('127.0.0.1', 48609)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0xb6785a0c>
move onto config mode
EVENT ofp_event->SimpleSwitch113 EventOFPSwitchFeatures
switch features ev version: 0x4 msg_type 0x6 xid 0xa595dcc6
OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=1,n_buffers=256
,n_tables=254)
hub: uncaught exception: Traceback (most recent call last):
  File "/home/vilpalu/ryu/ryu/lib/hub.py", line 52, in _launch
    func(*args, **kwargs)
  File "/home/vilpalu/ryu/ryu/base/app_manager.py", line 274, in _event_loop
    handler(ev)
  File "/home/vilpalu/ryu/ryu/app/test2.py", line 45, in miss_flow
    desc = ofctl_v1_3.get_desc_stats(datapath)
TypeError: get_desc_stats() takes exactly 2 arguments (1 given)

move onto main mode
----------------------------------------------------------------------------
-----------------

Please help.

Regards,
 Vilius.

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Minoru TAKAHASHI | 12 Dec 03:08 2014
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Re: QoS-Priority-Problem

Hi,Jason

Please don't drop the mailing list.

On 2014年12月11日 19:06, 許東豐 wrote:
> Dear Mr. Takahashi
>     Thank you very much for replying. I have tried your proposed method and it worked as expected. 
>     However, I also tried your proposed method but the priority values for port 5001 and 5002 are the same, 
>     it showed the same result(please see attachment 1). 

Yes. It should be the same result.
Because "priority" means the priority of the flow entry.
In this test, even if set to any value the "priority", should not affect the result.

>     And I still have two more questions, 
>     does your QoS mechanism have the priority function? For example, 
>     server bandwidth is allocated by the clients based on their priority ? 

I have attached an overview of my proposed method.
I think that server bandwidth is allocated by the clients priority.

>     And what's the major difference between the priority of flow entry(7.3.4.1 Modify Flow Entry Message)
>     and the priority of QoS mechanism mentioned in the Ryu Online documentation_QoS Chapter?

>the priority of QoS mechanism mentioned in the Ryu Online documentation_QoS Chapter?

Is Where the point?
If this point,
https://github.com/osrg/ryu-book/blame/master/ja/source/rest_qos.rst#L222
This point means the priority of the flow entry.

>     I would appreciate your kind help!!
> 
> 
> 
> 
>  
> 
> 2014-12-11 10:08 GMT+08:00 Minoru TAKAHASHI
<takahashi.minoru7@... <mailto:takahashi.minoru7@...>>:
> 
>     Hi,Json
> 
>     >However, in terms of priority values, port 5002 was supposed to have the higher priority value and occupy
the bandwidth but its bandwidth dropped at >t = 4 after the client 1(port 5001, priority = 1) made a request
of data.
>     >It seemed that the priority setting didn’t work at all.
> 
>         curl -X POST -d '{"priority":"3",
>                           "match": {"nw_dst": "10.0.0.1", "nw_proto": "UDP", "tp_dst": "5002"},
>                           "actions":{"queue": "0"}}' http://localhost:8080/qos/rules/0000000000000001
> 
>     "priority" of this command means that matching precedence of the flow entry.
>     (Please check "7.3.4.1 Modify Flow Entry Message" of OFSpec 1.3.4.)
>     Therefore, there is no related to priority of QoS.
> 
>     >Therefore, could you provide me a testing approach to verify the priority mechanism?
> 
>     If you want to treat CL2 as a high priority than CL1,
>     For example, Why do not try to set as follows?
> 
>     Change before (current))
>       port 5001 (CL1) -> Set to Queue 0 (max_rate: 0.85M bits / sec)
>       port 5002 (CL2) -> Set to Queue 0 (max_rate: 0.85M bits / sec)
> 
>     After the change)
>       port 5001 (CL1) -> Set to Queue 0 (max_rate: 0.2M bits / sec)
>       port 5002 (CL2) -> Set to Queue 1 (min_rate: 0.85M bits / sec)
> 
>     The result should be as follows:
>       * The traffic sent to the port 5001 is shaped with up to 200Kbps.
>       * The traffic sent to the port 5002 is guaranteed 850Kbps bandwidth.
> 
>     On 2014年12月10日 13:52, 許東豐 wrote:
>     > To whom it may concern:
>     >     My name is Jason. My team members and are are working the the QoS priority setting these days. We have
modified the code(rest_qos.py) as indicated on the Gitnub and tried it. However, we couldn't make sure
that the priority mechanism works or not in our testing case. Could you please offer us one simple approach
to show the QoS priority mechanism works ? Our testing case PDF file is attached to the mailed and I have
described the problems in the file. We have difficulty in demonstrating the QoS Priority mechanism to our
supervisors. We would appreciate your kind help!
>     >
>     > --
>     > Best wishes,
>     >
>     > Jason Syu
>     >
>     > Department of Electronic and Computer Engineering,
>     > National Taiwan University of Science and Technology (NTUST)
>     > Email(1): newdongfong@...
<mailto:newdongfong@...>
<mailto:newdongfong@... <mailto:newdongfong@...>>
>     > Email(2): b10002118@...
<mailto:b10002118@...>
<mailto:b10002118@... <mailto:b10002118@...>>
>     > Tel :  0910137762
>     >
>     >
>     >
>     > ------------------------------------------------------------------------------
>     > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>     > from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>     > with Interactivity, Sharing, Native Excel Exports, App Integration & more
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>     >
>     >
>     >
>     > _______________________________________________
>     > Ryu-devel mailing list
>     > Ryu-devel@... <mailto:Ryu-devel@...>
>     > https://lists.sourceforge.net/lists/listinfo/ryu-devel
>     >
> 
> 
> 
> 
> -- 
> Best wishes,
> 
> Jason Syu
> 
> Department of Electronic and Computer Engineering,
> National Taiwan University of Science and Technology (NTUST)
> Email(1): newdongfong@... <mailto:newdongfong@...>
> Email(2): b10002118@... <mailto:b10002118@...>
> Tel :  0910137762
> 
Attachment (Qos-priority-example.pdf): application/pdf, 32 KiB
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Zhang Chengjie | 12 Dec 01:09 2014
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meanwhile I want everything about this deal to be in compliance with the
jurisdictional system.

Looking forward to your response.

Best Regard

Zhang Chengjie
Outside Director

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Gmane