On Sun, Oct 2, 2011 at 2:48 PM, Arie Vayner (avayner) <[email protected]>wrote:
> I am not completely sure about the PPPoE model you have as you mention 2 > different things: > - L2TP > - VPLS > > If you get a L2 circuit (VPLS) with no IP configured on it, and you > terminate PPPoE sessions on your router, then this is not L2TP, but > regular PPPoE. > PPPoE is a L2 protocol which runs directly over Ethernet and does not > require an IP layer (the customer does not get an IP address before the > PPP layer assigns it). > > With L2TP you would have an IP based tunnel from the SP, while they > terminate the PPPoE session, and they would tunnel it to your LNS. In > that case the LAC (SP BRAS) has to have IP connectivity to your LNS > device. > > Arie > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of K bharathan > Sent: Sunday, October 02, 2011 11:40 > To: [email protected] > Subject: [c-nsp] pppoe-link > > | upstream ISP |------------>| Fibre Link |---------->| downstream ISP > | (gw > rt) | > > Fibre link (1 line) is divided into 3 VLANS > 1 vlan for internet bandwidth (wan ip from upstream ISP > 1 vlan for DSL bandwidth (wan ip from upstream ISP) > 1 vlan (l2tp link) for PPPOE from their VPLS network; no wan ips on > this; > > the link terminates at downstream ISP gw router > > problem: there is no wan ip on the PPPoe link how a PPPoe server can be > answering the DSL client; how can this particular link can be connected > to the downstream ISP network; anybody has got any ideas ? > thanks > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > thanks but what is the difference between regular PPPOE and L2TP; it seems i've to get more clarity from SP; but this given VLAN doe sn't have any IP; find difficulty to set a gw for the PPPoe server (NAS on cisco 2900 ISR router)sitting in the LAN _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
