Working with increased MTU on network interface. Thanks to all. MM ________________________________________ From: David MacMahon [[email protected]] Sent: 18 April 2017 05:31 PM To: Madden, Timothy J. Cc: Mike Movius; [email protected] Subject: Re: [casper] RE: ten_Gbe_v2 usage
You may also have to enable "jumbo packets" on any switches between the roach2 and your computer. The default "maximum transmission unit" (MTU) for Ethernet is 1500. Most implementations start with that value by default, but virtually all can be configured to be larger. I'm not sure what the absolute maximum is (there's not an official limit that I'm aware of), but I've never seen any smaller than 9000 which is more than enough for IP/UDP headers plus your application's packet header followed by an 8192 byte payload. I wouldn't recommend planning to get much more than 9000. HTH, Dave PS This MTU thing seems to be a personal nemesis of mine as it frequently bites me when I start using a new switch. Maybe some day I'll remember my own advice! :) On Apr 18, 2017, at 06:26, Madden, Timothy J. <[email protected]<mailto:[email protected]>> wrote: You also have to enable larger packet sizes on the enet card receiving the packets. There are some linux commands to do this, but I dont know them. ask your IT guy. Tim ________________________________ From: Mike Movius [[email protected]<mailto:[email protected]>] Sent: Tuesday, April 18, 2017 4:20 AM To: [email protected]<mailto:[email protected]> Subject: [casper] ten_Gbe_v2 usage Hi all, I have a roach2 design using a ten_Gbe_v2 yellow block to transmit data to an external pc. Everything works fine until the packet size reaches ~1500 bytes after which data stops being transmitted. I did the obvious thing and enabled large packets on the block mask but the problem persists. Any ideas? Thanks, MM. <117041811203900983.gif> Please consider the environment before printing this e-mail View the Reutech Radar System online disclaimer at http://www.rrs.co.za/links/E-maildisclaimer.asp<http://www.rrs.co.za/links/E-maildisclaimer.asp> -- You received this message because you are subscribed to the Google Groups "[email protected]<mailto:[email protected]>" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To post to this group, send email to [email protected]<mailto:[email protected]>. -- You received this message because you are subscribed to the Google Groups "[email protected]<mailto:[email protected]>" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To post to this group, send email to [email protected]<mailto:[email protected]>. -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To post to this group, send email to [email protected]<mailto:[email protected]>. Please consider the environment before printing this e-mail. DISCLAIMER: This message is intended for the use of the addressee and may contain information that is privileged and/or confidential. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of the information contained in this message is strictly unauthorized and prohibited. If you have received this message in error, please notify the sender by reply e-mail and delete the message from your system. Opinions, conclusions, or other statements in this message that do not relate to the business of REUTECH Radar Systems, a Division of Reutech Ltd., its subsidiaries or affiliates, are neither given nor endorsed by REUTECH Radar Systems, a Division of Reutech (Pty)Ltd. -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected].
