dpss dropped and duplicated packets

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Created by: Viktor S. Wold Eide on 22-04-2013 09:57:00 AM
Hi,
We are using the onep_dpss_inject_raw_packet function to inject l2 frames (sdk-c32-0.7.0.503g). Two frames are injected right after each other, then we wait some seconds before injecting two more frames, in a repeating pattern. After some time (minutes) one of the frames does not show up while the other is duplicated. More specifically, when injecting frames A,B from the application, we can observe B,B being sent in GRE packets from the computer to the router and then B,B being sent from the router. Frame A disappears while frame B is duplicated and sent twice.

Note that the application in addition to sending frames, also receives frames sent regularly from another non-onepk application.

Is this a known issue? Are there any know issues within onepk or the dpss_mp_32-0.7.0.503 application that might result in this kind of behavior?

Best regards
Viktor

Subject: Re: New Message from Viktor S. Wold Eide in onePK - Troubleshooting: dpss d
Replied by: Einar Nilsen-Nygaard on 22-04-2013 10:10:25 AM
Viktor,

This sounds like a bug and not something we are explicitly aware of. While some of the code that is used in the path you describe has been changed, I would appreciate it if you could perhaps provide the test harness that generates the problem if you are able to and we will try to reproduce on more recent builds and get back to you about whether or not the problem still exists.

Cheers,

Einar

On 22 Apr 2013, at 15:57, Cisco Developer Community Forums <cdicuser@developer.cisco.com<mailto:cdicuser@developer.cisco.com>> wrote:

Viktor S. Wold Eide has created a new message in the forum "Troubleshooting": -------------------------------------------------------------- Hi,
We are using the onep_dpss_inject_raw_packet function to inject l2 frames (sdk-c32-0.7.0.503g). Two frames are injected right after each other, then we wait some seconds before injecting two more frames, in a repeating pattern. After some time (minutes) one of the frames does not show up while the other is duplicated. More specifically, when injecting frames A,B from the application, we can observe B,B being sent in GRE packets from the computer to the router and then B,B being sent from the router. Frame A disappears while frame B is duplicated and sent twice.

Note that the application in addition to sending frames, also receives frames sent regularly from another non-onepk application.

Is this a known issue? Are there any know issues within onepk or the dpss_mp_32-0.7.0.503 application that might result in this kind of behavior?

Best regards
Viktor
--
To respond to this post, please click the following link: http://developer.cisco.com/web/onepk/community/-/message_boards/view_message/14521647 or simply reply to this email.

--
Einar Nilsen-Nygaard
Principal Engineer, Cisco

Subject: Re: New Message from Einar Nilsen-Nygaard in onePK - Troubleshooting: Re: N
Replied by: Viktor S. Wold Eide on 23-04-2013 04:40:20 AM
OK Einar, we will let you know if we are able to narrow it down or make a
small test case that reproduces the problem.

Best regards
Viktor


2013/4/22 Cisco Developer Community Forums <cdicuser@developer.cisco.com>

> Einar Nilsen-Nygaard has created a new message in the forum
> "Troubleshooting":
> -------------------------------------------------------------- Viktor,
>
> This sounds like a bug and not something we are explicitly aware of. While
> some of the code that is used in the path you describe has been changed, I
> would appreciate it if you could perhaps provide the test harness that
> generates the problem if you are able to and we will try to reproduce on
> more recent builds and get back to you about whether or not the problem
> still exists.
>
> Cheers,
>
> Einar
>
> On 22 Apr 2013, at 15:57, Cisco Developer Community Forums <
> cdicuser@developer.cisco.com<mailto:cdicuser@developer.cisco.com>> wrote:
>
> Viktor S. Wold Eide has created a new message in the forum
> "Troubleshooting":
> -------------------------------------------------------------- Hi,
> We are using the onep_dpss_inject_raw_packet function to inject l2 frames
> (sdk-c32-0.7.0.503g). Two frames are injected right after each other, then
> we wait some seconds before injecting two more frames, in a repeating
> pattern. After some time (minutes) one of the frames does not show up while
> the other is duplicated. More specifically, when injecting frames A,B from
> the application, we can observe B,B being sent in GRE packets from the
> computer to the router and then B,B being sent from the router. Frame A
> disappears while frame B is duplicated and sent twice.
>
> Note that the application in addition to sending frames, also receives
> frames sent regularly from another non-onepk application.
>
> Is this a known issue? Are there any know issues within onepk or the
> dpss_mp_32-0.7.0.503 application that might result in this kind of behavior?
>
> Best regards
> Viktor
> --
> To respond to this post, please click the following link:
> http://developer.cisco.com/web/onepk/community/-/message_boards/view_message/14521647or simply reply to this email.
>
> --
> Einar Nilsen-Nygaard
> Principal Engineer, Cisco
> --
> To respond to this post, please click the following link:
> http://developer.cisco.com/web/onepk/community/-/message_boards/view_message/14521969or simply reply to this email.

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