Hi Nouman, CSC... is all about providing the VPN services to the small carriers...
think of it... R1---R2---R3---R4---SP---R5---R6---R7---R8 now R4---SP---R5 is main carrier that providing MPLS VPN services to sub carrier (R2---R3) as well as (R6---R7) now those sub carriers are providing connectivity to their CE R1 and R8... now Main SP will only have reachability to only loopbacks of Subcarrier routers... but what about subcarrier's customer (R1/R8)... only sub carriers know about their customer routes where as Main carrier is hidden from this as you have IBGP between R3 and R6 or R2 and R7 as per your topology... so there should be some different schema of forwarding between Subcarrier---carrier---subcarrier for the Customer of subcarrier (R1 and R8) to achive this you need to have MPLS running between CSC CE (R3/R6) and PEs(R4 and R5)... hope this will help you regards Devang Patel On Tue, Aug 26, 2008 at 11:00 AM, <[EMAIL PROTECTED]>wrote: > Send CCIE_SP mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://onlinestudylist.com/mailman/listinfo/ccie_sp > or, via email, send a message with subject or body 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of CCIE_SP digest..." > > > Today's Topics: > > 1. CSC Scenario (Nouman, Khan) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 26 Aug 2008 10:47:36 +0300 > From: "Nouman, Khan" <[EMAIL PROTECTED]> > Subject: [OSL | CCIE_SP] CSC Scenario > To: <[email protected]> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="us-ascii" > > Hi, > > > > >From the book "MPLS Config on Cisco IOS Software" Page no 349. > > > > I have tested the config. Its working fine. I can ping from CE to CE. > > > > Now I am not getting the point why do we need MPLS (mpls ip ) on the > interface between CSC-CE1-X-AS2 and PE1-AS1 ? > > > > I know end to end connectivity is not working without it though I can > see the BGP routes on the CE. > > > > I just want to understand the logic. > > > > Thanks > > > > NOuman > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://onlinestudylist.com/pipermail/ccie_sp/attachments/20080826/d11a41b6/attachment-0001.html > > End of CCIE_SP Digest, Vol 18, Issue 11 > *************************************** >
