<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>It would be L2TP with in L2TP tunnel. </div><div><br></div><div>So tunnel in a tunnel. Would need to adjust your MTU, but could work.</div><div><br></div><div>V.</div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> Darren O'Connor <<a href="mailto:darrenoc@outlook.com">darrenoc@outlook.com</a>><br><span style="font-weight:bold">Date: </span> Tuesday, 9 October, 2012 2:05 PM<br><span style="font-weight:bold">To: </span> Vince Mammoliti <<a href="mailto:vince@cisco.com">vince@cisco.com</a>>, Arie Vayner <<a href="mailto:ariev@vayner.net">ariev@vayner.net</a>><br><span style="font-weight:bold">Cc: </span> "<a href="mailto:cisco-bba@puck.nether.net">cisco-bba@puck.nether.net</a>" <<a href="mailto:cisco-bba@puck.nether.net">cisco-bba@puck.nether.net</a>><br><span style="font-weight:bold">Subject: </span> RE: [cisco-bba] Multiple virtual circuits over single link<br></div><div><br></div><div><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><style><!--.hmmessage P
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--></style><div class="hmmessage"><div dir="ltr">At the moment we do in fact use a GRE tunnel that terminates on a firewall connecting to the customers network. It does work, but would be ideal if it were 'cleaner' in the sense that it just had it's own VC.
<br><br>
As for L2TP. I'm not 100% sure how that will work. Currently BT carry all traffic from the CPE to my LNS over an L2TP tunnel. How would I run L2TP on top of that?<br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">
Date: Tue, 9 Oct 2012 14:00:32 -0400<br>
Subject: Re: [cisco-bba] Multiple virtual circuits over single link<br>
From: <a href="mailto:vince@cisco.com">vince@cisco.com</a><br>
To: <a href="mailto:ariev@vayner.net">ariev@vayner.net</a>; <a href="mailto:darrenoc@outlook.com">darrenoc@outlook.com</a><br>
CC: <a href="mailto:cisco-bba@puck.nether.net">cisco-bba@puck.nether.net</a><br><br><div>One option would be to do a GRE or L2TP tunnel from the Customer CPE device. </div><div><br></div><div>Vince</div><div><br></div><span id="ecxOLK_SRC_BODY_SECTION"><div style="font-family:Calibri;font-size:11pt;text-align:left;color:black;border-bottom:medium none;border-left:medium none;padding-bottom:0in;padding-left:0in;padding-right:0in;border-top:#b5c4df 1pt solid;border-right:medium none;padding-top:3pt"><span style="font-weight:bold">From: </span>Arie Vayner <<a href="mailto:ariev@vayner.net">ariev@vayner.net</a>><br><span style="font-weight:bold">Date: </span>Tuesday, 9 October, 2012 1:56 PM<br><span style="font-weight:bold">To: </span>Darren O'Connor <<a href="mailto:darrenoc@outlook.com">darrenoc@outlook.com</a>><br><span style="font-weight:bold">Cc: </span>"<a href="mailto:cisco-bba@puck.nether.net">cisco-bba@puck.nether.net</a>" <<a href="mailto:cisco-bba@puck.nether.net">cisco-bba@puck.nether.net</a>><br><span style="font-weight:bold">Subject: </span>Re: [cisco-bba] Multiple virtual circuits over single link<br></div><div><br></div><div><div><div dir="ltr">Darren,
<div><br></div><div>It is technically possible, but as you do not operate the last mile (BT...), not sure what services they could offer.
<div><br></div><div>What you could do is create an IP overlay over the regular IP uplink... So you have the PPPoE session for connectivity and the main service, and then use a GRE tunnel terminating in the other service VRF on the CE device to tunnel the traffic to where
it should go on your infrastructure. </div><div>If you need Layer 2 extension, you could look at L2TPv3</div><div><br><div>Arie</div></div><br><div class="ecxgmail_quote">On Tue, Oct 9, 2012 at 10:51 AM, Darren O'Connor <span dir="ltr">
<<a href="mailto:darrenoc@outlook.com">darrenoc@outlook.com</a>></span> wrote:<br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex"><div><div dir="ltr">We currently have a couple of 7200 NPE-G2's running as LNS's terminating l2tp links from British Telecommunications (BT)<br><br>
Is it at all possible to run more than 1 virtual circuit over a single DSL/FTTC link?<br><br>
Basically sometimes customers of ours will be running 2 VRFs (guest wireless, whatever). It's very easy to separate these 2 VRFs over the WAN using subinterfaces on the primary ethernet link. However the DSL/FTTC backup interface can only be part of one VRF
because there is only one virtual-circuit.<br><br>
Any ideas? I've tried to run multiple pppoe sessions over a DSL link before and it never allowed me to have more than 1 active at any one time.<br><br>Thanks<br></div></div><br>
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