Re: Igfrp IP Distribution Function
Peter Tas via toasters <[email protected]> Tue, 4 Feb 2025 20:06:02 +0000
| Newsgroups | gmane.comp.hardware.netapp |
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charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Neoria - Public Hello Stephen, This document, although already 12y old, is still a good reference. https://www.netapp.com/media/19900-tr-4847.pdf Check pp7 and the following page(s) regarding load balancing. =93Port=94 distri function is generally known to be the preferred one when = configuring an ifgrp, but it may also depend on the brand/type of switch st= ack to which you connected the nics of the controllers. Good luck & best regards, Peter Tas. Neoria - Public From: John Stoffel <[email protected]> Date: Tuesday, 4 February 2025 at 18:29 To: Stephen Stocke <[email protected]> Cc: [email protected] <[email protected]> Subject: Re: Igfrp IP Distribution Function >>>>> "Stephen" =3D=3D Stephen Stocke <[email protected]> writes: > Greetings fellow toaster admins I hope someone can shed some light > on the IP distribution function for lacp ifgrps. You need to give more information on your setup, especially what kind of switches you're using and how they're configured. > We have a four port, multi mode lacp ifgrp, a0a, using interfaces > e2a-e2d. We observe SnapMirror traffic egressing port e2c. So? Why do you care? > The XOR of the last two bits of the source and destination IPs are > either x0 or x3 so I am expecting traffic to egress either the first > or fourth port in the ifgrp. > Assuming e2a is port 0, e2b is port 1, etc., I would expect traffic > to egress either e2a (0x0) or e2d (0x3). Share your config (cli output) so we can look at it. > What am I missing? I can=92t find any details about the actual hashing > function for IP distribution or port member indexing in an ifgrp to > confirm my assumptions. > Both clusters are a single A250 HA pair running 9.15.1. Are you seeing performance problems? Are you seeing that your traffic isn't being balanced across all your links? I guess I really don't understand the problem you're trying to solve, unless oyu're just looking for info on why it works this way, which might really be a Netapp only answer. _______________________________________________ toasters mailing list -- [email protected] To unsubscribe send an email to [email protected] --_000_FRWPR03MB109822C792DA05A886DD12354F3F42FRWPR03MB10982eu_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable <html xmlns:o=3D"urn:schemas-microsoft-com:office:office" xmlns:w=3D"urn:sc= hemas-microsoft-com:office:word" xmlns:m=3D"http://schemas.microsoft.com/of= fice/2004/12/omml" xmlns=3D"http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1= 252"> <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Aptos; panose-1:2 11 0 4 2 2 2 2 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; font-size:12.0pt; font-family:"Aptos",sans-serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#467886; text-decoration:underline;} span.EmailStyle19 {mso-style-type:personal-reply; font-family:"Calibri",sans-serif; color:windowtext; font-weight:normal; font-style:normal;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt; mso-ligatures:none;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 72.0pt 72.0pt 72.0pt;} div.WordSection1 {page:WordSection1;} --></style> </head> <body lang=3D"en-BE" link=3D"#467886" vlink=3D"#96607D" style=3D"word-wrap:= break-word"> <p style=3D"font-family:Calibri;font-size:14pt;color:#008000;margin:5pt;fon= t-style:normal;font-weight:normal;text-decoration:none;" align=3D"Left"> Neoria - Public<br> </p> <br> <div class=3D"WordSection1"> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US">Hello Stephen,<br> <br> This document, although already 12y old, is still a good reference.<o:p></o= :p></span></p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><a href=3D"https://www.net= app.com/media/19900-tr-4847.pdf">https://www.netapp.com/media/19900-tr-4847= .pdf</a><o:p></o:p></span></p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></= p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US">Check pp7 and the followin= g page(s) regarding load balancing. <br> =93Port=94 distri function is generally known to be the preferred one when = configuring an ifgrp, but it may also depend on the brand/type of switch st= ack to which you connected the nics of the controllers.<o:p></o:p></span></= p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></= p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US">Good luck & best regar= ds,<o:p></o:p></span></p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></= p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US">Peter Tas.<o:p></o:p></spa= n></p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></= p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></= p> <p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-family:"Cali= bri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></= p> <div id=3D"mail-editor-reference-message-container"> <div> <div> <div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm = 0cm 0cm"> <p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><b><span style=3D"col= or:black"><br> </p> <p style=3D"font-family:Calibri;font-size:14pt;color:#008000;margin:5pt;fon= t-style:normal;font-weight:normal;text-decoration:none;" align=3D"Left"> Neoria - Public<br> </p> From: </span></b><span style=3D"color:black">John Stoffel <john@stoffel.= org><br> <b>Date: </b>Tuesday, 4 February 2025 at 18:29<br> <b>To: </b>Stephen Stocke <[email protected]><br> <b>Cc: </b>[email protected] <[email protected]><br> <b>Subject: </b>Re: Igfrp IP Distribution Function<o:p></o:p></span> <p></p> </div> <div> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt">>>>>>= ; "Stephen" =3D=3D Stephen Stocke <[email protected]> writ= es:<br> <br> > Greetings fellow toaster admins I hope someone can shed some light<br> > on the IP distribution function for lacp ifgrps.<br> <br> You need to give more information on your setup, especially what kind<br> of switches you're using and how they're configured. <br> <br> > We have a four port, multi mode lacp ifgrp, a0a, using interfaces<br> > e2a-e2d. We observe SnapMirror traffic egressing port e2c.<br> <br> So? Why do you care?<br> <br> > The XOR of the last two bits of the source and destination IPs are<br> > either x0 or x3 so I am expecting traffic to egress either the first<b= r> > or fourth port in the ifgrp.<br> <br> > Assuming e2a is port 0, e2b is port 1, etc., I would expect traffic<br= > > to egress either e2a (0x0) or e2d (0x3).<br> <br> Share your config (cli output) so we can look at it. <br> <br> <br> > What am I missing? I can=92t find any details about the actual hashing= <br> > function for IP distribution or port member indexing in an ifgrp to<br= > > confirm my assumptions.<br> <br> > Both clusters are a single A250 HA pair running 9.15.1.<br> <br> Are you seeing performance problems? Are you seeing that your traffic= <br> isn't being balanced across all your links? <br> <br> I guess I really don't understand the problem you're trying to solve,<br> unless oyu're just looking for info on why it works this way, which<br> might really be a Netapp only answer. <br> <br> _______________________________________________<br> toasters mailing list -- [email protected]<br> To unsubscribe send an email to [email protected]<o:p></o:p= ></span></p> </div> </div> </div> </div> </div> </body> </html> --_000_FRWPR03MB109822C792DA05A886DD12354F3F42FRWPR03MB10982eu_-- --===============3525994143475027229== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ toasters mailing list -- [email protected] To unsubscribe send an email to [email protected] --===============3525994143475027229==--