A mobile operator(Z) has an existing MPBN comprising of Juniper Routers. 4 M320 as P routers and M10i(Z-PE) as PEs scattered accros regions.
The operator has partnered with another vendor(H) and need to separate 4 of the vendor (H-sites) on the MPBN.
Therefore the vendor(H) has to connect her routers (H-PE)in these four region to the M10i, maintain, manage and separate her network.
Vendor(H) traffic will use the existing MPBN-MPLS network as carrier for the traffic between these H-sites.
Vendor(H) traffic are of 4 diffrent types such as Billing, OAM, Signal and Voice.
Making reference to the explanation above, H wants to have full control over all her traffic therefore, all H devices will also be made PE; Hence 4 diff VPN-instances will be maintained on H-devices. VPN-billing, VPN-OAM, VPN-Signal and VPN-Voice.
Challenges: (A) Is it possible to maitain two PEs(H-PE and Z-PE) in H-sites.
(B) Is it possible to maintain a VPN-instances (1) on the H-Devices(H-PE) and a corresponding VPN on the juniper (Z-PE), i.e for advertisement of VPN-IPv4 between H-PE and Z-PE (2) maintain the same VPN instances on Z-PEs and other Z-PEs in H-Regions (3) Z-PE provides mpls bi-directional among H-sites
(C) Make use of EBGP between Z-PE and H-PE. These will saperate H-AS from Z-AS. (D) Redistribute H-traffic into BGP.
note: H-PEs cannot run MP-BGP because there is no direct link nor no existing IGP between H-PEs Z-PEs has MP-BGP and existing IGP running among each other. MPLS exist in all H-sites