Adaptive-Mesh for Mobile Core Networks Edge-controlled multi-service core network by Optimum Communications Services, Inc
Context - Connectivity Requirements for Core Network All * backbone network points interconnected as if through a dedicated point-to-point L1/0 connections to the doubled core switches dedicated for the mobile operator Internet Doubled over OC-Nc or 1/10GbE per site BGR = = MGW = PSTN MGW BGR Core switch (A) Border Gateway Router (with firewalls) Label Edge Router Media (PSTN<>VoIP) Gateway Content site / Data center SAN Core switch (B) * is the assumed packet forwarding protocol, but this presentation applies to any forwarding technique (eg VLAN tag, IPv6 flow ID) equally well / MGW / BGR Virtual core s/switches transparently interconnecting all the s PSTN Internet s at the customer switching centers/content sites/internet/pstn points etc
Implementation (example) of Connectivity Requirements Using OCS ITN Adaptive-Mesh Internet BGR = = MGW = PSTN 7-site 2xSTS-N-rate Adaptive-Mesh over OC-4N ring MGW BGR Doubled over OC-Nc or 1/10GbE per site Border Gateway Router (with firewalls) Label Edge Router Media (PSTN<>VoIP) Gateway Content site / Data center SAN Doubled 5-site STS-N-rate Adaptive-Mesh over OC-4N ring; interconnects the four regional Adaptive-Mesh networks and the PSTN/Internet points 7-site 2xSTS-N inter-site rate Adaptive-Mesh over OC-4N ring See next slide 1+1 Protected, Link-aggregated over STS-Nc PPP links = OCS Intelligent Transport Network IF module 7-site 2xSTS-N inter-site rate Adaptive-Mesh over OC-4N ring / MGW / BGR PSTN Internet s at the customer switching centers/content sites/internet/pstn points etc
All interfaces are over 10GbE or OC-192c links 1A Site 1 1B Site 5 Site 2 5B 2A 5B Study the Adaptive-Mesh at the center of the hierarchical core network: Network to be implemented to provide 20Gbps of non-blocking, protected inter-site connectivity among the five sites 2B 4B Site 4 4A 3B Site 3 3A
1A Site 1 1B Site 5 Site 2 5B 2A 5A Conventional reference network implementation: 2B core switch A 20 wavelength connections needed on the fiber ring to connect the 20 10G ports to the two core switches core switch B 10GbE/ OC-192c 4B Site 4 4A 3B Site 3 3A
ITN IF Modules 1A 1A Site 1 1B 1B Site 5 Site 2 5B 5B 2A 2A 5A 5A Adaptive-Mesh of ITN provides direct Layer 1 circuits (of adaptive bandwidth) between each pair of A s, as well as B s, with only one instance of packet-forwarding between the interfaces Single 40G wavelength ring sufficient for the twenty10g points ie 200 Gbps of packet-switched capacity 2B 2B 4B See next slide for network ring capacity requirements of an Adaptive-Mesh, eg between the A s of this network 4A 3B 3A 10GbE/ OC-192c 4B Site 4 4A 3B Site 3 3A
Each Adaptive Concatenation Multiplexer Bus (AMB) capacity MxSTS-1 West AMB to 1 5 West AMB to 5 Each interfaces with a, or of another A-M, over a pair of PPP links, each with nominal capacity of MxSTS-1, eg OC192c /10GbE for M=192 (site 4) East AMB to 5 East AMB to 4 4 1 WDM cloud As many AMBs as there are s in the local ring-half, ie (N-1)/2 AMBs for N-node full-mesh, needed in each ring direction In this case, N=5 and thus (5-1)/2 = 2 AMBs needed per ring direction Thus non-blocking A-M among nodes with MxSTS-1 of A-M capacity, requires ring capacity worth: L = [(N-1)/2]xSTS-M For example, ITN supports M = STS-192-rate Adaptive-Mesh over an L = STS-768 ring among up to N = 9 nodes; L = [(9-1)/2]xSTS-192 = STS-768 West AMB to 4 East AMB to 1 West AMB to 2 East AMB to 3 5- Adaptive-Mesh requires [(5-1)/2]xSTS-192=2xSTS-192 ring STS-768 (single wavelength) ring sufficient for a 5-node Adaptive-Mesh between both A and B s of previous slide All ITN IF Modules (s) able to map packets on all AMBs passing by them; an AMB carries packets to its destination from all source s along them 2 East AMB to 2 West AMB to 3 3
Adaptive-Mesh for Mobile Core Summary: 1) Customer controllable, transparent packet-switched network service 2) Up to 20X architectural network cost-efficiency gain 3) Efficient multi-service integration OCS Adaptive-Mesh Service: Customer s private packet-switching backbone -- just without the need for the customer to spend capital on deploying or operating their backbone network Optimum Communications Services, Inc All rights reserved Not for distribution
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