<html aria-label="message body"><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hello Roland,<div><br></div><div>We have similar configurations here. I have to add that we do not generate any configurations directly within IXP Manager, but rather access some information in the DB and use that as input in our own config generation workflows. YMMV.</div><div><br></div><div>As “remote” IXPs, we have both the simple 1 IXP, 1 VLAN scenario (we take their VLAN and we give them ours), as well as the other scenario where each remote connected network comes in on an individual VLAN, and each of our connected members with the remote service to the other IXP, has an individual additional VLAN for that.</div><div><br></div><div>In the first case, we just declare the remote IXP’s VLAN (let’s say IXP2 in your example) in IXP Manager, and if appropriate, add that service on our member’s port. End of the story. The uplink port to IXP2 is also configured in IXP Manager, equally with both our Peering VLAN and IXP2’s. No individual statistics, of course.</div><div><br></div><div>In the second case, we use something similar to what Barry has described: we use an additional dumb switch just for VLAN mapping, where each individual remote VLAN representing our own Peering VLAN, gets terminated on an individual Access port, facing a regular Peering port on our normal IXP infrastructure, both connected with a cable. Individual VLANs representing the remote IXP’s Peering VLAN, destined for our own connected networks, get implemented as Private VLANs in IXP Manager, making it clear that these are not for general use. Thus, each of our members subscribing to remote IXP3 gets an individual, additional, “private” VLAN on their port, shared between them and the remote IXP uplink port.</div><div><br></div><div>In both cases, there is no impact on generated RS configs, because you wouldn’t manage any RS config of the remote IXPs on your end. There would be an impact on generated switch configs if you used IXP Manager for that, but I would suppose that our way of implementing it would just work.</div><div><br></div><div>Cheers</div><div><br></div><div>Mich</div><div><br><div>
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</span></div><div><br><blockquote type="cite"><div>On 23 Apr 2026, at 14:50, Roland Christanell | Telmekom via ixpmanager <ixpmanager@inex.ie> wrote:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-line: none; text-decoration-thickness: auto; text-decoration-style: solid;"><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">Hello,<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">Thank you for your help. Unfortunately, this does not seem to solve my problem, so I’ll try to explain it in more detail.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">IXP1: This is our IXP<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">IXP2: A different IXP in a different physical location<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">IXP3: A different IXP in a different physical location<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">IXP4: A different IXP in a different physical location<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">We have Layer</span><span lang="EN-US" style="font-size: 11pt; font-family: "Cambria Math", serif;">‑</span><span lang="EN-US" style="font-size: 11pt;">2 transport to all other IXPs, allowing us to carry their peering LANs and, in turn, provide ours to them. At the moment, only one of these IXPs has more than one customer; this is the reason for my request regarding<span class="Apple-converted-space"> </span></span><span lang="EN-US" style="font-size: 11pt;">“</span><span lang="EN-US" style="font-size: 11pt;">one port with two customers,</span><span lang="EN-US" style="font-size: 11pt;">”</span><span lang="EN-US" style="font-size: 11pt;"><span class="Apple-converted-space"> </span>although in theory there could be more than two.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">The second issue is the following: if customers on our IXP want to connect to one of the other IXPs (IXP2, IXP3, IXP4), I need to configure the corresponding VLANs for those IXPs on the customer-facing port.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">We configure our switches manually, so there is no need for templates on the IXP Manager side. However, I would like to achieve the following:<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;"><o:p> </o:p></span></div><ul type="disc" style="margin-bottom: 0cm; margin-top: 0cm;"><li class="MsoListParagraph" style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">Each customer should only see their own traffic on the port connected to our IXP.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">A correct and clean way to model the VLANs of the other IXPs in IXP Manager, without breaking the automatic Route Server or Nagios configuration.<o:p></o:p></span></li></ul><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">I hope this clarifies the situation and that there is a suitable solution.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span lang="EN-US" style="font-size: 11pt;">Thank you in advance for your time and help.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">Best regards,<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><b><span lang="EN-US" style="font-size: 11.5pt; font-family: Tahoma, sans-serif; color: rgb(38, 38, 38);">Roland Christanell</span></b><span lang="EN-US"><o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div></div></div></blockquote></div><br></div></body></html>