i.MX ProcessorsのトピックRe: Increase interframe delay for FEC tx

Increase interframe delay for FEC tx

eph — Thu, 12 Sep 2013 00:33:46 GMT

Hi, We've got a product running 3.0.35 kernel on iMX6 Solo. This product transmits quite a lot of UDP data in bursts to a multicast address. We also got a switch used with this product (which we can't replace). The problem is that the switch starts dropping frames when we put this product and its previous version on the same switch. It seems that the switch can't handle these bursts of UDP traffic. If I use different switch it helps. When I put little delay in fec driver, the problem goes away. But putting delays in the driver doesn't seem like a good idea. I tried to find if it's possible to somehow maybe configure this but failed. So what do you think would be the proper solution?

Thanks

Re: Increase interframe delay for FEC tx

kal — Thu, 12 Sep 2013 12:38:13 GMT

Is it a Gigabit switch? If so then you could try forcing the link speed down to 100mbps, either at the iMX6 interface or at the switch end if it is a managed switch with configuration interface.

Re: Increase interframe delay for FEC tx

eph — Thu, 12 Sep 2013 19:58:24 GMT

No, unfortunately it's not - it's based on Micrel KSZ8995XA chip 10/100.

Re: Increase interframe delay for FEC tx

YixingKong — Fri, 21 Feb 2014 07:42:47 GMT

eph

We are sorry for getting back to you so late. Are you still stuck with the issue? If you have somehow to resolved the

issue, can we close the discussion? If you still need help, please feel free to reply with an update to this discussion.

Thanks,
Yixing

Re: Increase interframe delay for FEC tx

YixingKong — Wed, 26 Feb 2014 07:53:15 GMT

eph

We have not got your response yet and will close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.

Thanks,

Yixing

Re: Increase interframe delay for FEC tx

YixingKong — Mon, 03 Mar 2014 08:55:26 GMT

eph

This discussion is closed since no activity. If you still need help, please feel free to reply with an update to this discussion, or create another discussion.

Thanks,

Yixing