[c-nsp] Dialup with MPLS
Oliver Boehmer (oboehmer)
oboehmer at cisco.com
Fri Dec 23 05:04:25 EST 2005
Vikas,
I still don't really understand what you want to achieve. Are you asking
how to turn your CE routers 5 and 6 into MPLS-enabled routers so they
can act as Tunnel Headend for user connections terminating on 5+6? Well,
then you need to enable an IGP and MPLS+LDP on the connections between 5
and 6 and your MPLS core, so you to turn your "CE" routers 5 and 6 into
"PE" routers (or better "edge-LSR").
oli
Vikas Sharma <> wrote on Friday, December 23, 2005 6:35 AM:
> Hi Andris / Nick,
>
> I know you both are right. I can not and should not extend MPLS
> network to CE router. But in my case there is no CE router. These are
> my own routers at remote locations. Pls go through the topology I
> have mentioned in previous mail.
> I need the solution like :-
> *Traffic-engineering tunnel headend located on the customer-edge
> router*-In this scenario, the tunnel headends are established at the
> customer edges. The customer edge then signals the tunnel across the
> provider edge and the network (again I own the customer edge routers).
> This excerpt is from Cisco site :
>
http://www.cisco.com/en/US/tech/tk436/tk428/technologies_white_paper0918
6a00800a3e69.shtml
>
> Request you pls go through the network topology and let me know if I
> can or any other Telecom carrier have implemented this kind of
> solution. one more important thing, I don't have any last mile on
> DSL/LL etc... all customers are coming in to my network usind
> wireless connection (EV-DO). Once agian I am repeting my question, I
> want to establish end to end TE not VPN (no VRF).
>
> Thanks
> Vikas Sharma
>
>
>
> On 12/16/05, Nick Shah <Nick.Shah at aapt.com.au> wrote:
>>
>> Vikas
>>
>> Generally, CE is unaware (and should be) of all things MPLS.
>>
>> What I think is happening in your case is that the Telco network is
>> not yours, you are aggregating a few PPP tails at your CE (which is
>> your demarcation) and you want them to belong to different VRF's.
>>
>> If thats the case, check with your SP and you could prolly do CSC
>> (carrier servicing carrier) MPLS VPN model. Thereby your CE can talk
>> label switching with PE.
>>
>> Check out this url (and search csc vpn on cco)
>>
>> http://www.ciscotaccc.com/iprout/showcase?case=K16792313
>>
>> rgds
>> Nick
>>
>>
>> -----Original Message-----
>> From: Vikas Sharma [mailto:vikassharmas at gmail.com]
>> Sent: Fri 12/16/2005 5:13 PM
>> To: Nick Shah; cisco-nsp at puck.nether.net
>> Cc:
>> Subject: Re: [c-nsp] Dialup with MPLS
>> Hi Nick,
>>
>> Thanks for the reply. But my scenario is a typical Telecom network
>> where user is using mobile to access the data service. I don't have
>> router ports to create MPLS VPN. This network is a MPLS enable
>> network for TE. All the users are using their phone to connect to
>> network using EV-DO / 1X-RTT network. Can I create end to end TE
>> tunnel? my topology looks like -
>>
>> Router 1
>>
>>
>> Router 2 Router 3
>>
>>
>> Router 4
>>
>> router
>> 5 router 6
>>
>> here router 1 2 and 3 are in mesh and AAA is attached to router 3.
>> router 4 is attached to router 3 and router 5 and 6 are attached to
>> router 4. A user dial from CDMA network that is attached to router
>> 5 and get authenticated by AAA attached to router 3. Now router 1,2
>> and 3 are part of MPLS core, router 4 is PE router and router 5 and
>> 6 are behaving as CE router. Once the mobile user get the IP, he/she
>> lands on router 5 which is currently CE router (this is just the
>> logical view, all above shown routers are part of same network). In
>> this scenario, can I implement end to end MPLS with TE?
>>
>> Pls write me back if you need more clarification.
>>
>> Thanks
>> Vikas
>>
>>
>>
>> On 12/16/05, Nick Shah <Nick.Shah at aapt.com.au> wrote:
>>
>> I am assuming you want to put the dialup user in a VRF
>>
>> If so, 2 ways to do it
>>
>> - your NAS is configured as the PE, where upon DIALUP &
>> authentication, RADIUS sends VRF attributes and puts the user
>> in appropriate VRF - or deploy VPDN, and L2TP multihop from
>> the NAS to LNS (which is a PE) and have radius send VRF
>> attributes to put into a VRF.
>>
>> Rgds
>> Nick
>>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net
>> [mailto:cisco-nsp-bounces at puck.nether.net <mailto:
>> cisco-nsp-bounces at puck.nether.net> ] On Behalf Of Vikas Sharma
>> Sent: Friday, 16 December 2005 3:30 p.m.
>> To: cisco-nsp at puck.nether.net
>> Subject: [c-nsp] Dialup with MPLS
>>
>> Hi,
>>
>> In a scenario where user can access Internet or other data
>> services using wireless medium (CDMA phone to access
>> data on laptop / PC), is it possible to implement MPLS
>> on dialup? User gets an IP through PDSN (PPP) and now it is
>> connected to the network. In core and distribution
>> layer MPLS can be implemented using Core
>> as a
>> MPLS
>> core and distribution layer as a MPLS Edge LSR. Can we
>> implement
>> end to
>> end
>> MPLS? Like as soon as user get an IP and come on the first
>> router
>> on the
>> network, it should be switched using MPLS. In the normal
>> scenario, we need
>> to configure last router that is connecting to distribution
>> layer router (edge lsr) as a CE router.
>>
>>
>> Thanks
>> Vikas
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