[ovs-dev] openvswitch-2.11.1 not supported to kernel version 5.0 and 4.20

[rakesh kumar]

Hello Team,

I tried compiling the ovs source cod in Linux 5.0 version but got an error
stating "Newer version than 4.18.x is not supoorted".

Could it be made to support Linux 5.0 ?


*Regards*
Rakesh Kumar
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[ovs-dev] Mutlique support in OVS without DPDK ?

[rakesh kumar]

Hello,
I am trying to use sch_mqprio qdsic with OVS interface but the problem is
that it supports only multi-queue device  only.

Does OVS supports multiqueue option without DPDK if yes how we can enable
it ?

Please give your views for the above query !


*Regard*
Rakesh Kumar
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[ovs-dev] Mqprio qdisc is not working on OVS interfaces(Port) !

[rakesh kumar]

Dear Team,

I tried to attach mqprio qdisc in ovs interface ,it is not working but if
attached to physical interface mqprio disc is working . what may  be the
reason for this problem in ovs ?


*Regards*
Rakesh Kumar
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Re: [ovs-dev] Regarding OVS Datapath Flow !

[rakesh kumar]

Hello Greg,

Thanks for your reply !

Followed your instruction and tried to print the Device name but it prints
the Bridge name and Bridge Interface name. I am sharing the two screenshot
one is the Log image and another is the ovs-vsctl show output(*netdev type
is Internal)*, Please give your suggestion.

And I would like you to give you suggestion for the below issue
1. I am planning to extend the queue at egress port of the ovs to 8 queues
but really don't have the exact clue where should i change the code ,
should i explore Linux qdisc like pfifo_fast or something else .



Regards
Rakesh Kumar

On Mon, Aug 27, 2018 at 8:56 PM Gregory Rose  wrote:

>
> On 8/27/2018 5:09 AM, rakesh kumar wrote:
> > Hi Team,
> >
> > I am was trying to put log in the datapath module in Linux environment to
> > trace the flow if we ping one host to another host using ovs switch(using
> > mininet emulator)..
> >
> > Inside *vport.c* file *ovs_vport_send *function is being called and then
> > internally it calls *vport->ops->send*() function I am unable to trace
> from
> > this function , can anyone tell me *where the call will go after calling
> > vport->ops->send* function  inside* vport.c* file.
> >
> >
> > Please give your valuable suggestions !
>
> It will go to the vport driver's registered send function - you can get
> the name via the vport
> structure's net_device member dev->name.
>
> - Greg
>
>
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[ovs-dev] Regarding OVS Datapath Flow !

[rakesh kumar]

Hi Team,

I am was trying to put log in the datapath module in Linux environment to
trace the flow if we ping one host to another host using ovs switch(using
mininet emulator)..

Inside *vport.c* file *ovs_vport_send *function is being called and then
internally it calls *vport->ops->send*() function I am unable to trace from
this function , can anyone tell me *where the call will go after calling
vport->ops->send* function  inside* vport.c* file.


Please give your valuable suggestions !

*Regards*
Rakesh Kumar
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[ovs-dev] Physical device and virtual device in OVS

[rakesh kumar]

1.How OVS handles the packet coming from Physical device or virtual device 
means how it differentiate from both . Please give your views.

Regards
Rakesh Kumar
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[ovs-dev] Physical Port and virtual port !

[rakesh kumar]

1. Does OVS maintain different source code for simulating Physical Port and
Virtual Port  in OVS !
2. How to extend the OVS queue mechanism at egress port of the OVS switch
to support 8 queues on priority basis ? Please give some clue on this ?




Regards
Rakesh Kumar
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[ovs-dev] Number of queues at egress port available in OVS !

[rakesh kumar]

Hello All,

How many queues are available at egress port in OVS, How do we queue the
packets on the basis of PCP field i.e 3 bit in 802.1Q header ?



Regards
Rakesh Kumar
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[ovs-dev] How many are queues available at egress port by default ? - Please reply !

[rakesh kumar]

I am trying to implement 8 queues at egress port in the switch and will
queue the packets based on the priority I need the current file name which
is handing the queuing for OVS .

Regards
Rakesh Kumar
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[ovs-dev] How to debug OVS !!

[rakesh kumar]

How to debug the  OVS behavior ?
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[ovs-dev] How many queues are supported at egress port in OVS for traffic shaping ? Please point to the file name

[rakesh kumar]

How to know the queue mechanism in OVS from source code , mean to say how
to check the number of queues at egress port in OVS .


Regards
Rakesh Kumar
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Re: [ovs-dev] IEEE 802.1Q in Openvswitch !

[rakesh kumar]

Thanks Ben,


*OVS doesn't do anything special with it.  It treats it like any
otherfield.*

Could you please elaborate the above mentioned point.

My intention here was to know how OVS  Queue the traffic(*Packets*) at port
which are coming from datapath(kernel space), it would really help me if
you point out the file name in OVS which handles the Queue mechanism .



*Regards*
Rakesh Kumar.

On Tue, Jun 26, 2018 at 11:53 PM, Ben Pfaff  wrote:

> On Tue, Jun 26, 2018 at 12:52:36PM +0530, rakesh kumar wrote:
> > As 3-bit <https://en.wikipedia.org/wiki/Bit> field called the Priority
> Code
> > Point (*PCP*) within an Ethernet frame header when using V
> > <https://en.wikipedia.org/wiki/VLAN>LAN  tagged frames as defined by
> *IEEE
> > 802.1Q*. It specifies a priority value of between *0 and 7* inclusive
> that
> > can be used by QoS disciplines to differentiate traffic.
> >
> > Could someone from  the list  help me to find how OVS  is handling the
> > above in code  in Kernel mode  ?
>
> OVS doesn't do anything special with it.  It treats it like any other
> field.
>
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[ovs-dev] IEEE 802.1Q in Openvswitch !

[rakesh kumar]

Hello Team,

As 3-bit <https://en.wikipedia.org/wiki/Bit> field called the Priority Code
Point (*PCP*) within an Ethernet frame header when using V
<https://en.wikipedia.org/wiki/VLAN>LAN  tagged frames as defined by *IEEE
802.1Q*. It specifies a priority value of between *0 and 7* inclusive that
can be used by QoS disciplines to differentiate traffic.

Could someone from  the list  help me to find how OVS  is handling the
above in code  in Kernel mode  ?


Regards
Rakesh Kumar
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[ovs-dev] Queue's in OVS - Please give your views !

[rakesh kumar]

Dear Team,

Which file should i investigate to get the details of Queue implementation
in Kernel module. As there are are 8 queues ( 0 to 7) at port where packets
are forwarded normally if using IEEE 802.1Q protocols.


Regards
Rakesh Kumar
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[ovs-dev] OVS Queue Mechanism in Kernel Space !

[rakesh kumar]

Dear Team,

1 . How  ovs has implemented the Queue mechanism in Kernel mode ?
2 . Which part of the code is or module is dealing withe Ingress and
Outgress Ports  ?
3. How does Open Flow table differs with Filtering database used in IEEE
802.1Q ?

List Please give your views for the above query's .




Regards
Rakesh Kumar
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[ovs-dev] Fwd: OVS extension - Please Give your views !

[rakesh kumar]

Hello Team Please give your thoughts for the below query.!!

Regards
Rakesh Kumar
-- Forwarded message --
From: rakesh kumar 
Date: Fri, Jun 8, 2018 at 2:59 PM
Subject: OVS extension - Please Give your views !
To: ovs-dev@openvswitch.org


Hi Team,

I would like to know whether ovs will be correct choice if I want to
implement the following standards and can simulate this standards(using
core Emulator integrated with OVS as SDN Service) or not ?

1. Extension for Precision Time Protocol (as in IEEE 1588)
2.  Basic full-duplex switched Ethernet with VLANs (as in IEEE 802.1Q
3.   Extension for AVB (as in IEEE 802.1Q - 2011)


if yes for the above I would welcome everyone's view on some  name of the
simulator which can be used to simulate this Layer 2 protocols along with
the OVS.
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Re: [ovs-dev] Fwd: unable to start openvswitch daemon !!

[rakesh kumar]

I am trying to use OVS with Core Emulator (
https://www.nrl.navy.mil/itd/ncs/products/core ) and Core internally trying
to start the daemon from that location(/etc/init.d).

And I will follow your instructions given for the issue.


Regards
Rakesh Kumar


On Tue, Jun 5, 2018 at 6:14 PM, Flavio Leitner  wrote:

>
> please don't drop the list.
>
> The documentation provides the distro agnostic way to start the
> service and doesn't mention that file, so I have no idea why
> you are looking for it.
>
> Also that you might want to install the package from your distribution
> which is ready and follows the distribution rules (like adding init.d/
> script).
>
> I hope that helps.
> fbl
>
> On Tue, Jun 05, 2018 at 05:58:09PM +0530, rakesh kumar wrote:
> > Hello,
> >
> > Thanks for your reply !!!
> >
> > I followed the documentation mention above but still unable to see the
> > script file openvswitch-switch at location /etc/init.d  and still could
> not
> > start openvswitch daemon .
> >
> > On Tue, Jun 5, 2018 at 1:17 AM, Flavio Leitner  wrote:
> >
> > > On Mon, Jun 04, 2018 at 11:07:39PM +0530, rakesh kumar wrote:
> > > > Please give your suggestions for the below issue!
> > >
> > > Please follow the documentation:
> > > https://github.com/openvswitch/ovs/blob/master/
> > > Documentation/intro/install/index.rst
> > > https://github.com/openvswitch/ovs/blob/master/
> > > Documentation/intro/install/general.rst
> > >
> > >
> > > >
> > > > Regards
> > > > Rakesh Kumar
> > > >
> > > > Begin forwarded message:
> > > >
> > > > > From: rakesh kumar 
> > > > > Date: 4 June 2018 at 4:51:35 PM IST
> > > > > To: ovs-dev@openvswitch.org
> > > > > Subject: unable to start openvswitch daemon !!
> > > > >
> > > > > Team,
> > > > >
> > > > > After doing sudo install in Linux, I am not seeing
> openvswitch-switch
> > > at /etc/init.d and unable to start the daemon or check the status.
> > > > >
> > > > > Can some one help me out here ?
> > > > >
> > > > >
> > > > > Regards
> > > > > Rakesh Kumar
> > > > ___
> > > > dev mailing list
> > > > d...@openvswitch.org
> > > > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> > >
> > > --
> > > Flavio
> > >
> > >
>
> --
> Flavio
>
>
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[ovs-dev] Fwd: unable to start openvswitch daemon !!

[rakesh kumar]

Please give your suggestions for the below issue!

Regards
Rakesh Kumar

Begin forwarded message:

> From: rakesh kumar 
> Date: 4 June 2018 at 4:51:35 PM IST
> To: ovs-dev@openvswitch.org
> Subject: unable to start openvswitch daemon !!
> 
> Team,
> 
> After doing sudo install in Linux, I am not seeing openvswitch-switch at 
> /etc/init.d and unable to start the daemon or check the status.
> 
> Can some one help me out here ?
> 
> 
> Regards
> Rakesh Kumar
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[ovs-dev] unable to start openvswitch daemon !!

[rakesh kumar]

Team,

After doing *sudo install* in Linux, I am not seeing openvswitch-switch at
/etc/init.d and unable to start the daemon or check the status.

Can some one help me out here ?


Regards
Rakesh Kumar
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[ovs-dev] Queue Mechanism is OVS ?

[rakesh kumar]

Hello Team,

Could anyone from the list guide me how the Queue mechanism is implemented
in OVS, Please take me to the code where i can explore in detail.


Regards
Rakesh Kumar
9042812130
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[ovs-dev] OVS with core emulator

[rakesh kumar]

Team ,

Anyone tried to use OVS as a SDN services in Core Network emulator ,
Please share your findings !

Regards
Rakesh Kumar
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[ovs-dev] Ovs in userspace

[rakesh kumar]

Hello Team 

I am planning to write few algorithms to modify the switching behavior of 
packets by ovs switch but I don’t want to do in  kernel mode , I want my entire 
process to be handled in userspace .

Team waiting for your suggestions!!

Regards
Rakesh Kumar
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[ovs-dev] OVS in UserSpace !

[rakesh kumar]

Dear team,

Please share your experience of OVS in userspace, I am trying to configure
OVS in userspace and want to skip the Kernel module so that the packet
processing and switching can only be handled in Kernel space.



Regards
Rakesh Kumar.
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[ovs-dev] IDE for OVS ?

[rakesh kumar]

Hello Team,

What is the IDE or framework used in Linux environment for the OVS
Develpment ?

Can we debug the OVS if used as SDN Service in Core Emulator or any other
network emulator .


Regards
Rakesh Kumar
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[ovs-dev] Packet switching in OVS ! Please reply

[rakesh kumar]

Dear Team,

I need to modify the functionality of OVS  to test some scenarios using
Network Emulator Core for my research I need to know the following things.

1. Which part of the code is dealing with Packet Switching and where these
packets are structured in OVS ?

2. Any link or document which can  give some brief descriptions about the
OVS Source code structure ?


Regards
Rakesh Kumar
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[ovs-dev] Regarding VLAN and source code compilation - Team Please reply !

[rakesh kumar]

Hello Team,

I am very new to  ovs, I wanted to use Ovs with Network Emulator Core Link
 , and fortunately Core 5.0
has integrated OVS as SDN service .

My question is

1. Is it Possible to modify the OVS code to play around VLAN ? if Yes
Please give some details

2.  Is VLAN tags are added in the frame using code in ovs or we have any
script doing this  ?

3. How to build ovs source code and how we can integrated it as SDN service
in any Network emulator ?
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[ovs-dev] VLAN with Network emulation

[rakesh kumar]

Dear Team,

Give some idea's on how VLAN works with Network emulation, How to configure
VLAN stuffs  ?

Regards
Rakesh kumar
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[ovs-dev] What are Key Performance Indicator's in ovs !

[rakesh kumar]

 Hello Team,


I am using Core Network Emulator() which uses ovs services to simulate the
wired networks .

My question is below

1. What are the Key Performance Indicator provided by *OVS *.
2. Any output files got generated which gives you the simulation results
like
3.  E2E Latency
4. Queue size(min,max,median),
5.Load on Links
6.Time to establish a stream
7. How much packets lost
8. Path information in case of network look



Waiting for the valuable suggestions Team !!!

Regards
Rakesh Kumar
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[ovs-dev] What are Key Performance Indicator's in ovs !

[rakesh kumar]

Hello Team,


I am using Core Network Emulator() which uses ovs services to simulate the
wired networks .

My question is below

1. What are the Key Performance Indicator provided by OVS .
2. Any output files got generated which gives you the simulation results
like
1.  E2E Latency
2. Queue size(min,max,median),
3.Load on Links
4.Time to establish a stream
5. How much packets lost
6. Path information in case of network look



Waiting for the valuable suggestions Team !!!


Regards
Rakesh Kumar
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[ovs-dev] How OVS is currently being used with Core Network emulator - Please reply

[rakesh kumar]

Hello Team,

I am using Core Network emulator to simulate wired networks but I don't
want to use Linux bridges so decided to use OVS.

My question is

1. Currently how OVS is being used means Is it being used by an network
simulator or something else  ?

2. How I can use OVS-switches with Core Network Emulator. ?

3. How can we modify the ovs switches behavior with my alogrithms for
traffic shaping,queuing...etc ?


Regards
Rakesh Kumar
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Re: [ovs-dev] How to implement IEEE 802.1Q using vSwitch in Core Emulator ?

[rakesh kumar]

I am using Core Emulator to simulate the wired network, so OVS can be
integrated with core emulator or is there any other simulator which uses
OVS

On Tue, Apr 17, 2018 at 9:08 PM, Ben Pfaff <b...@ovn.org> wrote:

> Please don't drop the list.
>
> On Tue, Apr 17, 2018 at 08:50:46PM +0530, rakesh kumar wrote:
> >  > 1. Can I customize the vSwitch behavior to implement my algorithms ex
> -
> > > want to customize the Queue's behavior in switches.  if Yes Please
> Provide
> > > some details  ?
> >
> > What algorithms?
> >
> > Re  - I will have my algorithms for traffic shaping and controlling the 7
> > queues inside the switch.
>
> In that case, you have two choices.
>
> You can either implement your queuing algorithms as Linux qdiscs, inside
> the Linux kernel, and use the OVS Linux kernel module datapath.  In that
> case, there might be no advantage over the Linux bridge.
>
> Or, you can implement your queuing algorithms inside the OVS netdev-dpdk
> module, in userspace, and use the OVS DPDK datapath.  This is likely to
> result in a switch that is faster than the OVS datapath.
>
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Re: [ovs-dev] How to implement IEEE 802.1Q using vSwitch in Core Emulator ?

[rakesh kumar]

Hello,

I am using core emulator for wired network simulation and internally for
wired network simulation core uses* Linux bridge* when using *HUB OR
SWITCHES*.

Initially plan to extend the Linux bridge to implement IEEE 802.1Q behavior
so that I can customize the behavior of *nodes(switches)* according to my
algorithms inside that.

but I came across Open vSwitch and as you said it has already implemented
IEEE 802.1Q so my question is

1. Can I customize the vSwitch behavior to implement my algorithms ex -
want to customize the Queue's behavior in switches.  if Yes Please Provide
some details  ?

2. How can I bypass the Linux bridge in core emulator and use vSwitch for
wired network simulation ?




Regards
Rakesh kumar

On Mon, Apr 16, 2018 at 11:51 PM, Ben Pfaff <b...@ovn.org> wrote:

> On Mon, Apr 16, 2018 at 12:19:48PM +0530, rakesh kumar wrote:
> > I came across  Open vSwitch  through one of the user from core user's
> > community,
> > I need to know how we can implement IEEE 802.1Q in Core Emulator using
> > vSwitch.  ? and how i can implement my own algorithms to work on Layer 2
> > for wired network simulation.
>
> OVS supports IEEE 802.1Q (aka VLANs).  What questions do you have?
>
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[ovs-dev] Fwd: How to implement IEEE 802.1Q using vSwitch in Core Emulator ?

[rakesh kumar]

Hello team,

I came across  Open vSwitch  through one of the user from core user's
community,
I need to know how we can implement IEEE 802.1Q in Core Emulator using
vSwitch.  ? and how i can implement my own algorithms to work on Layer 2
for wired network simulation.




Giving Some intro to Core Emulator - It is used to emulate basically the
wired networks and to achieve the wired network emulation it uses Linux
Bridges to emulate.
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[ovs-dev] How to implement IEEE 802.1Q using vSwitch in Core Emulator ?

[rakesh kumar]

Hello team,

I came across  Open vSwitch  through one of the user from core user's
community,
I need to know how we can implement IEEE 802.1Q in Core Emulator using
vSwitch.  ? and how i can implement my own algorithms to work on Layer 2
for wired network simulation.




Giving Some intro to Core Emulator - It is used to emulate basically the
wired networks and to achieve the wired network emulation it uses Linux
Bridges to emulate.
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