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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Spanning Tree = The Spawn of Satan himself. <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Just saying……<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><ol style='margin-top:0cm' start=1 type=1><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span style='mso-fareast-language:EN-US'>Virtual Chassis <o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span style='mso-fareast-language:EN-US'>MC LAG<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span style='mso-fareast-language:EN-US'>Satan’s little helper<o:p></o:p></span></li></ol><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> AusNOG <ausnog-bounces@lists.ausnog.net> <b>On Behalf Of </b>Simon Attwell<br><b>Sent:</b> Friday, 20 April 2018 1:31 PM<br><b>To:</b> James Cunningham <jjazza26@gmail.com><br><b>Cc:</b> ausnog@lists.ausnog.net<br><b>Subject:</b> Re: [AusNOG] How to setup something like LACP across two switches<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>James,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>I glanced through the responses so this might have been covered in one of the many links you were provided.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>It seems to me that simple spanning-tree would solve your problem if you don't mind being limited to 1Gbps.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Supported on pretty much every switching platform in different flavours (STP, RSTP, MST, PVST, RPVST+).<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;background:white'>Spanning tree was developed to prevent switching loops.</span><span style='font-size:12.0pt;font-family:"Arial",sans-serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>You can have two links to the customer switch from your two independent switches if they are interconnected.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>You can control link selection with bridge priority.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Failover in the case of a switch or link failure would be automatic.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Spanning-tree will block one link until a failure occurs to prevent traffic from looping.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Regards<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>- Simon<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div></div><div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><div><div><div><div><div><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>--<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Simon Attwell<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Mobile: 0409 756 819<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Email: <a href="mailto:simon@attwell.net" target="_blank"><span style='color:#1155CC'>simon@attwell.net</span></a><o:p></o:p></span></p></div></div></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On 20 April 2018 at 09:45, Jarryd Sullivan <<a href="mailto:Jarryd.Sullivan@area9.com.au" target="_blank">Jarryd.Sullivan@area9.com.au</a>> wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=MsoNormal style='margin-bottom:12.0pt'>Hey James,<br><br>Looks like you've already gotten a heap of responses, but if you're also using HPE (flex network/comware) switches you can use IRF: <a href="http://h17007.www1.hpe.com/docs/reports/irf.pdf" target="_blank">http://h17007.www1.hpe.com/docs/reports/irf.pdf</a><br><br>Another vendor, another name/technology :)<br><br>Jarryd Sullivan<br><br><br>From: AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a>> On Behalf Of James Cunningham<br>Sent: Friday, 20 April 2018 8:48 AM<br>To: <a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a><br>Subject: [AusNOG] How to setup something like LACP across two switches<o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Hello Fellow Ausnoggers,<br><br>I'm hoping that I can quickly pick the brain of someone more knowledgeable in data centre networking than myself.<br><br>We have a customer in one of our racks in Equinix who has a single network switch, and some servers connected to it. We currently have two connections from our switch to the customer's switch, with LACP for redundancy (and as a side effect, we get a slight bandwidth boost for 2 x 1Gbps connections, which is a slight bonus).<br><br>We would like to improve this by putting in two network switches on our end, to protect again a single switch failure on our side, but the customer will still have one single network switch.<br><br>I'm pretty sure we can't do LACP with this style of setup - so what would people recommend to achieve redundancy here? Main thing is that the connection needs to auto-failover if a network switch fails, or if one of the uplinks fails.<br><br>I have created the attached diagram which illustrates what we are trying to do.<br><br>Can anyone please help? I'll owe a beer at the Next AusNOG meetup!<br><br>Thanks<br><br>James<o:p></o:p></p></div></div><p class=MsoNormal>________________________________<br><br>The information contained in this message and any attachments may be confidential information. If you are not the intended recipient, you must not use or forward the information contained in these documents. If you have received this message in error, please delete the email and notify the sender.<br><br>Internet communications are not secure. You should scan this message and any attachments for viruses. Under no circumstances do we accept liability for any loss or damage which may result from your receipt of this message or any attachments.<o:p></o:p></p><div><div><p class=MsoNormal>_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><o:p></o:p></p></div></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>