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EcoNets

EcoNets. User’s Guide. 1. The basic design methodology 2. Description of input files (use the Textbook or Help Menu for additional details) 3. General Description of output files (use the Textbook or Help Menu for more details) 4. General Description of File Menu. EcoNets.

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EcoNets

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  1. EcoNets User’s Guide 1. The basic design methodology 2. Description of input files (use the Textbook or Help Menu for additional details) 3. General Description of output files (use the Textbook or Help Menu for more details) 4. General Description of File Menu

  2. EcoNets -Its Capabilities • A tool that models new network topologies. It can also model any given topology. • A network design tool based on interactive and iterative techniques. • A tool that provides cost and performance summaries. • A tool that provides a capability to store and view detailed outputs and topologies.

  3. EcoNets -Its Requirements • A Mac/PC with 16 Mbytes of RAM for a trial version (< 60 nodes) or 32 Mbytes (< 250 nodes) or 64 Mbytes (< 500 nodes). • System 6.05/7.0x(MAC) & Windows. • MS PPT or HTML Browser for slides. • The PC must be a 486DX/Pentium type

  4. EcoNets - Design Approach • Considering the facts that (1) network topology determines total monthly costs and performance, (2) there are almost infinite topologies possible & (3) 70-80% of the monthly costs are determined by access lines and trunks, one must then Vary design parameters to obtain a subset of useful network topologies, study their costs and performance to obtain the optimum topology.

  5. EcoNets - About Inputs • A maximum of 17 input files may be required to design a network • Each input file is a sequential or a “flat” text file • A negative number defines an end -of-file (EOF) for each input file • The structure of data within each input file is derived by EcoNets .

  6. Econets Package EcoNets - Inputs & Outputs Example Inp . Files Outputs • VHD Input files, • LINK Output files, Package • MAP Topology & • NLT Performance • TARIFF Summaries. EcoNets • SDF • DTP • FILES

  7. EcoNets :Required Input Files 1. VHD - Defines V&H coordinates of each node and its BHR traffic value 2. LINK - Defines ALink types that connect network nodes (e.g. CPEs) 3. MAP - Defines the map boundary 4. NLT - Defines each link type, C, Wm , MF, applicable tariff number & F pf 5. TARIFF-Defines each tariff listed in NLT

  8. EcoNets : Reqd .Input Files( Contd .) 6. SDF - Defines < 60 design parameters 7. NAME - Defines < 6-character codes for each network-node name 8. FTD - Defines detailed from-to traffic flows for each nodal pair 9. LATA - Defines a LATA number for each network node 10. FILES - Names all input files used for each model

  9. EcoNets : Reqd . Input Files( Contd .) 11. CSABDS - Defines customer service area bands for ACD networking 12. UTBL - Defines Virtual 800-Service tariff 13. WUTBL -WATS-Service tariff 14. MUTBL -MegaCom800- Svc . tariff 15. RSTBL - Rate-Step-Table for ACDs 16. DTP - defines daily traffic profile 17. SWF - defines # SWs and SW IDs

  10. EcoNets: Available Inp. File Types Input Files are defined by their 2-letter prefixes of their assigned numbers. Any input file names without the following 2-letter prefixes will be ignored - a FATAL Error. 1. VH 2. LI 3.MA 4. NL 5. TA 6. SD 7. NA 8. FT 9. LA 10. FI 11. CS 12. UT 13. WU 14. MU 15. RS 16. DT 17. SW

  11. EcoNets - File Operations • Create a new input file • View/Update an input file • Save/Duplicate file under another name • Merge 2 VHD/Map/FTD files • Multiply VHD traffic values by fixed k • View Output File (text or graphics) • PrintOutputFile

  12. EcoNets - The VHD File • The 1st element of each vector defines the assigned node number for a CPE • The 2nd element defines theVertical (V) - Coordinate for the node CPE • The 3rd element defines the Horizontal (H)- Coordinate for the node CPE • The 4th element defines the node’s Time Consistent Avg . (TCA) of busy hour(BHR) traffic intensity ( millierlangs for voice, bits per second for data). A FTD file must be used to represent actual traffic flows.

  13. EcoNets - the LINK File • A LINK file defines voice/data AL types • A LINK file is used only when Flk=1 • It has a single column of numbers, each defining the access link (AL) type for each nodal CPE when Flk=1. • Range of AL types=1, 2, 3, 4, ..per NLT • If a LINK file is not read (i.e. Flk=0), each CPE is assigned ALT type in SDF.

  14. EcoNets - Tariff file structure 1st element of a 16-element vector defines the average total cost of 2 local channels ( LCs ) of each leased AL or TK, Next 5 elements define the upper values of mileage bands (=< 5), Next 5 elements define the associated fixed monthly costs, Next 5 elements define the associated per- mile costs.

  15. EcoNets - SDF file structure • Upto 60 design parameters can be defined to either create a network topology or affect its performance • These 60 parameters can be divided into 4 distinct sets: 1. Common 2. Voice-related 3. Data-related 4. ACD-related

  16. SDF File - The Common Design Parameters • TGF (traffic growth factor) • F , F , F , F file read factors ... inp . . lk nn ftd lt • V , V , H , H .viewing area .. min max min max • F (print or not to print factor for nodal#s) np • ADM, DPM (actual/days/ mo .) • NDEC, DECT ( F for COGs ), dis Note: See TEXT for complete definitions

  17. SDF - The ACD-Related Design Parameters • ECD ( Exp . Call Duration in Secs .) • DREQ, PEXD (Delay reqd . for design and prob . of exceeding DREQ) • Clbr (cost of labor in $/Hr.) • Frst (rate setting factor for discounts) • ACDT (ACD type to be modeled) Note: See TEXT for complete definitions

  18. EcoNets - FTD file structure • Each vector has 3 elements: 1. From-Node (e.g. 1,2,3,....) 2. To-Node (e.g. 2, 3, 1,.......) 3. TCA of BHR traffic intensity ( milli - erlangs for voice, bps for data) 1 2 25000 2 3 12000 -1

  19. EcoNets- LATA file structure The LATA input file consists of a single column with as many rows as there are CPE nodes in the network. Each element is a 3-digit Local Access & Transport Area (LATA) code. LATA file is also used for ACD/VPN network design where each element is a 2-digit geographical code (varying from 01 to 60) used by common carriers. See pages 265-267 of Text for a table relating these codes to CSABDS (varying from 1 to 6). An example for a 5-node network is as follows: {524@730@224@920@922@-1} … @=CRLF

  20. EcoNets : CSABDS file structure The CSABDS has 60 vectors, each with 62 elements. Each vector represents a region. Each element represents the customer service band# for a given pair of source & destination regions. See Chapter 8 of Textbook “Network Design Using EcoNets ” for further study.

  21. MUTBL File Structure: Hourly Usage Cost($) Vs.CSABD CSABD B.Day$ Evening$ N/ Wkd $ 1 11 9 8 2 12 11 9 3 13 12 10 4 14 13 11 5 15 14 12 6 16 15 13 -1. Note:CSABD may = mileage band value

  22. EcoNets : RSTBL file structure • A RSTBL consists of 60 vectors, each consisting of 6 elements. • There is one vector for each calling region. • Each of the six elements represents a rate step, one for each CSABD. • See Chapter 8 of Text for more help.

  23. EcoNets : SWF Structure • A SWF has a single columned vector, with the first value, Nsw , defining the number of switches followed by Nsw site IDs for all switches • The structure is { Nsw @ID(1) @ID(2) @.........@ID( Nsw )@ -1} • A SWF may have additional values for ACDNets

  24. Understanding Output Files 1. VoiceNets, ACDNets, and DataNets have unique output file structures 2. Textbook is the best source of good examples of output files for all networks 3. The Help Menu is a also a good source of hints for reading output file data

  25. Understanding Output Files (Contd.) 4. Output files for VoiceNets describe details of each AL bundle (star topology) 5. Output files for ACDNet describe details of each virtual AL bundle (star topology) and agent force required for each hour for which calls are answered.

  26. Understanding Output Files (Contd.) 6. Output files for StarDataNets describe each AL Bundle for a Star Topology 7. Output files for MDNets, DLNets & MSTNets describe details of each netlink (e.g. sites sharing a netlink plus delays) 8. Output files also list response times.

  27. Understanding Output Files (Contd.) 9. Output files are saved under following names automatically: ALFSDi, ALFMDi, ALFDLi, ALFMST, ALFVN, ACDF and TKF where “i” represents the ith level of AL bundle and TKF represents an output file for a fully connected mesh backbone trunking network. To prevent overwrites, one must open it and use “Save as..”.

  28. The Network Design Process • Understanding of input and output files is only one aspect of the network design process. • The user interface and the task of finding optimum locations for switch locations are also useful for under- standing the network design process.

  29. Grahic -r’s InterUseface (GUI) for making the network design process a truly interactive one. One such interface popularly known as the graphics user interface (GUI) is now available for all modern deskop WSs . Such a GUI employs windows, menus, dialog buttons and edit fields to enable the user to handle all file and networking operations in an effortless manner. A user friendly interface is an utmost necessity

  30. (1) Latest Version of EcoNets (e.g. date of issue & contact info) (2) input files-contents/structures, (3) output files -how to read them, (4) networking tasks and results. (5) analysis tasks. This menu can help reduce references to textbook. A GUI for EcoNets ( Contd .) 4. HELP MENU: It enables the user to interpret useful data related to:

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