Cell-relay over MPLS using MGX 8850

we have existing ATM network using TDM links between MGX 8850 & have PVCs for voice & data traffic. We are planning to migrate the same over MPLS network
following is the setup.
MGX1----> PE1 ------>MPLS Cloud ------> PE2 ---->MGX2
As per this plan we will terminate existing TDM trunks to PE routers at both the end & map VPI/VCI values at PE routers for virtual ATM pvcs over MPLS cloud.We are using cell-relay over MPLS with VC mode. My query is, can we enable MPLS L3 & L2 on the same last mile in this scenario? We want to have one IP over ATM interface on same ATM interface at PE router & make that part of VRF & enable L3 MPLS VPN between all the sites for any to any data transfer. For data we don't want to use L2 MPLS as its any to any & it will end up with too many ATM PVCs.
In this setup PE router & MGX will be configured in NNI-NNI at both end. If we want to create one sub-interface at same ATM interface at PE router end, then that port need to be in UNI. Is it possible to use same ATM trunk port as NNI & UNI?
In MGX 8850 we have RPM,AXSM & VISM modules.

the following document should give you some idea,
http://www.cisco.com/en/US/products/hw/modules/ps2797/products_module_installation_guide_chapter09186a0080086f9a.html

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With Vignesh R. P.
Welcome to the Cisco Support Community Ask the Expert conversation.This is an opportunity to learn and ask questions about concept, configuration and troubleshooting Layer 2 MPLS VPN - Any Transport over MPLS (AToM) with Vignesh R. P.
Cisco Any Transport over MPLS (AToM) is a solution for transporting Layer 2 packets over an MPLS backbone. It enables Service Providers to supply connectivity between customer sites with existing data link layer (Layer 2) networks via a single, integrated, packet-based network infrastructure: a Cisco MPLS network. Instead of using separate networks with network management environments, service providers can deliver Layer 2 connections over an MPLS backbone. AToM provides a common framework to encapsulate and transport supported Layer 2 traffic types over an MPLS network core.
Vignesh R. P. is a customer support engineer in the Cisco High Touch Technical Support center in Bangalore, India, supporting Cisco's major service provider customers in routing and MPLS technologies. His areas of expertise include routing, switching, and MPLS. Previously at Cisco he worked as a network consulting engineer for enterprise customers. He has been in the networking industry for 8 years and holds CCIE certification in the Routing & Switching and Service Provider tracks.
Remember to use the rating system to let Vignesh know if you have received an adequate response.
Vignesh might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Service Provider sub-community discussion forum shortly after the event. This event lasts through through September 21, 2012. Visit this forum often to view responses to your questions and the questions of other community members.

Hi Tenaro,
AToM stands for Any Transport over MPLS and it is Cisco's terminology used for Layer 2 MPLS VPN or Virtual Private Wire Service. It is basically a Layer 2 Point-to-Point Service. AToM basically supports various Layer 2 protocols like Ethernet, HDLC, PPP, ATM and Frame Relay.
The customer routers interconnect with the service provider routers at Layer 2. AToM eliminates the need for the legacy network from the service provider carrying these kinds of traffic and integrates this service into the MPLS network that already transports the MPLS VPN traffic.
AToM is an open standards-based architecture that uses the label switching architecture of MPLS and can be integrated into any network that is running MPLS. The advantage to the customer is that they do not need to change anything. Their routers that are connecting to the service provider routers can still use the same Layer 2 encapsulation type as before and do not need to run an IP routing protocol to the provider edge routers as in the MPLS VPN solution.
The service provider does not need to change anything on the provider (P) routers in the core of the MPLS network. The intelligence to support AToM sits entirely on the PE routers. The core label switching routers (LSRs) only switch labeled packets, whereas the edge LSRs impose and dispose of labels on the Layer 2 frames.
Whereas pseudowire is a connection between the PE routers and emulates a wire that is carrying Layer 2 frames. Pseudowires use tunneling. The Layer 2 frames are encapsulated into a labeled (MPLS) packet. The result is that the specific Layer 2 service—its operation and characteristics—is emulated across a Packet Switched Network.
Another technology that more or less achieves the result of AToM is L2TPV3. In the case of L2TPV3 Layer 2 frames are encapsulated into an IP packet instead of a labelled MPLS packet.
Hope the above explanation helps you. Kindly revert incase of further clarification required.
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Vignesh R P

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How to provied Redundancy for VRF MGMT with help of BGP over MPLS(MPBGP)

Hi,
Please find the Network Topology.
This is One Remote site and mamaged by Mgmt office.
All devices on remote site is accessed by MGMT Office. My organisation seek for Redundancy for Managing devices.
My administration is from MGW to R1. I am new to MPLS.
AS u can see in diagram, R1 have 3 VRF(Voice,Signal and MGMT).Currently i have primary link over whitch we are running MPBGP.
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router bgp 64513
synchronization disable
neighbor 10.36.150.1 remote-as 64513
neighbor 10.36.150.1 activate
neighbor 10.36.150.1 update-source loopback1
address-family ipv4 vrf signalling
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$
address-family ipv4 vrf voice
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    redistribute static
$
address-family ipv4 vrf OAM-T
    redistribute connected
    redistribute static
$
address-family vpnv4
    neighbor 10.36.150.1 activate
    neighbor 10.36.150.1 send-community
$
!<ospfv2>
router ospf 100
interface gei-3/3
    network point-to-point
$
network 10.36.150.49 0.0.0.0 area 0.0.0.0 --- loopback ip (Configured)
network 10.36.149.60 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R1.(Configured)
network 10.36.149.64 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R2. ---------- (till now not configured as secondary link is not connected)
router-id 10.36.150.49
so what configuration need to done at R1 to achiev the redunancy for MGMT vrf ?
if possible please reply with sample configuration.
or
IN MPBGP protocol, where i will apply routing policy to apply as- path prepand    so that Route would be secondary to neighbor.
IGP-OSPF and BGP over MPLS is running.
on Which address-familiy nbr,should i apply, is it in VPNV4 or IPV4 or IPV4 VRF ?
if i want 10.36.128.0/26 prefix should go to Neigbhor MPLS R2, what should i use access-list or Prefix list?
please provide the reply with its config .
thanks in advance,
Regards,
Ajay
Message was edited by: Ajaykumar yadav

Hi,
Please find the Network Topology.
This is One Remote site and mamaged by Mgmt office.
All devices on remote site is accessed by MGMT Office. My organisation seek for Redundancy for Managing devices.
My administration is from MGW to R1. I am new to MPLS.
AS u can see in diagram, R1 have 3 VRF(Voice,Signal and MGMT).Currently i have primary link over whitch we are running MPBGP.
Traffic from these VRF goes to this primary link. Currently Secondary link is not connected.
Now my organisation proposed for the secondary link and they want that only traffic from VRF -- MGMT should go through MPLS RTR R2 (the secondary link ) , when the mgmt routes not learned from MPLS RTR R1 (Connected to the SP1 ).
Current R1 config
There is IBGP betweem R1 to both MPLS RTR.
BGP Config
router bgp 64513
synchronization disable
neighbor 10.36.150.1 remote-as 64513
neighbor 10.36.150.1 activate
neighbor 10.36.150.1 update-source loopback1
address-family ipv4 vrf signalling
    redistribute connected
    redistribute static
$
address-family ipv4 vrf voice
    redistribute connected
    redistribute static
$
address-family ipv4 vrf OAM-T
    redistribute connected
    redistribute static
$
address-family vpnv4
    neighbor 10.36.150.1 activate
    neighbor 10.36.150.1 send-community
$
!<ospfv2>
router ospf 100
interface gei-3/3
    network point-to-point
$
network 10.36.150.49 0.0.0.0 area 0.0.0.0 --- loopback ip (Configured)
network 10.36.149.60 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R1.(Configured)
network 10.36.149.64 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R2. ---------- (till now not configured as secondary link is not connected)
router-id 10.36.150.49
so what configuration need to done at R1 to achiev the redunancy for MGMT vrf ?
if possible please reply with sample configuration.
or
IN MPBGP protocol, where i will apply routing policy to apply as- path prepand    so that Route would be secondary to neighbor.
IGP-OSPF and BGP over MPLS is running.
on Which address-familiy nbr,should i apply, is it in VPNV4 or IPV4 or IPV4 VRF ?
if i want 10.36.128.0/26 prefix should go to Neigbhor MPLS R2, what should i use access-list or Prefix list?
please provide the reply with its config .
thanks in advance,
Regards,
Ajay
Message was edited by: Ajaykumar yadav

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Hello people,
im facing problem trying to establish a GRE tunnel over mpls. The topology goes as follows:
(server) ----CE1(6500)-----PE1(6500)----vrf cloud-----CE2(6500)--FW
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- PE1 receives a default route generated by CE2 (via mpbgp).
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On both cases (default AND specific static routes) the connectivity(ping) from end to end was there.
Has anybody seen anything alike?
thanks,
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Dears,
hope you support me understtanding the following:
i have the following topology:
now i need CE1 and CE2 communicate to CE3 ( CE3 connected to mpls through ethernet) over MPLS cloud and be aware that mpls cloud working perfectly but my head stund at how to make CE1 and CE2 connect to customer VRF on PE router through FR switch .
please i need your support.
thanks in advance

Check whether you have enabled IP CEF .
ip cef distributed !
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http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_configuration_guide_chapter09186a00800ca6ce.html

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Hi,
I would appreciate if you answer my following questions :
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Frame Relay and MPLS

Hi,
I want to ask about the frame relay and MPLS.
Frame Relay Scenerio
The frames reached at the frame relay network and forwarded on the basis of DLCI. All the VCs are defined prior to the traffic on the network on the basis of DLCI (This is just like the MPLS network as packets are forwarded on the basis of Labels).
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Hi Muhammad,
The answer is : MPLS is working on FR like it's working on ethernet. Because the FR and Ethernet are running on Layer2. It's told that MPLS is working at layer 2.5 , meaning that is between Layer 3 , and Layer 2. So in order to work it needs a layer2 forwarding in your case FR's DLCI. On top of the Layer 2 it is the MPLS header.
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Configuring CE-PE link on Frame Relay over ATM

Hi!
Need you guys expert opinion on how to configure configuring CE-PE link on Frame Relay over ATM. I am stump by this one because I never done it before. The CE is a Cisco 7206 with ATM PA and the parameters given to us is DLCI number in x/y format...isn't that the format for PVC. When asked, my SP contact says that it is indeed FR over ATM. Any of you guys who have experience to guide on this or point me in the right direction is most welcome. Thanks
Rgds
Helme

Hello Helme,
ask your provider if they are doing FR to ATM service interworking.
In that case one side is configured for Frame-Relay and the other side for ATM
Service interworking is done by provider.
Verify that you have the same MTU on both sides and configure following ISP specifications
ATM uses two numbers to identify a PVC
int atm 4/0
no ip address
no shut
int atm 4/0.1 point-to-point
mtu 1500
ip address x.x.x.1 255.255.255.252
pvc x/y
enc aal5snap
protocol ip x.x.x.2 broadcast
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see this example
http://www.cisco.com/en/US/tech/tk39/tk53/technologies_configuration_example09186a00801747e3.shtml
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MPLS networks can pose a challenge for FCIP
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hi,
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R1---PVC1/200-----MPLS-----PVC2/200--R2

I believe you are trying to do VP Mode ATOM.
The below link has information on how to configure the same.
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_feature_guide09186a008016102a.html#wp1271181
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Cell-relay over MPLS using MGX 8850

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