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Long Reach Ethernet - LRE

Long Reach Ethernet - LRE. Challenges to Overcome. Overcome Ethernet distance limitation More bandwidth over Category 1/2/3 support advanced media-rich applications Drive down per-line costs while driving up performance by utilizing Ethernet components

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Long Reach Ethernet - LRE

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  1. Long Reach Ethernet - LRE

  2. Challenges to Overcome • Overcome Ethernet distance limitation • More bandwidth over Category 1/2/3 • support advanced media-rich applications • Drive down per-line costs while driving up performance by utilizing Ethernet components • Retain key QoS, security, provisioning and management features • Ensure equipment is easy to use and provides platform for future applications

  3. Technology Solution: LRE (Ethernet Over VDSL) • 5, 10 or 15 Mbps symmetric throughput • Maps directly to full duplex Ethernet • Allows for true high speed BANs • Co-exists with POTS and digital phones • Requires splitter • Up to 5000 ft over single pair Cat 3 • Runs over Cat 1, 2 as well unstructured wiring • Based on robust Catalyst switching platform

  4. Solution Components Catalyst 2924-LRE-XL Switch 10/100 L2 or L3 Ethernet switch: Stack aggregator PS-1M-LRE-48 POTS Splitter Cisco Building Broadband Service Manager (Radius Authentication, NAT, DHCP, DNS, User Self-Activation, Dynamic Bandwidth Selection), Third-party Account/Billing Cisco 575-LRE CPE

  5. Based on industry leading Catalyst 2900-XL platform IOS Based 802.1Q VLANs 802.1p COS Management CLI Embedded web console CPE Monitoring Switch Clustering Security Private VLAN Access (unicasts to uplink port only) Multicast control TACACS+ (management authentication) 12 or 24 LRE Ports (RJ21) 4 10/100 Ethernet Ports (RJ45) For stacking or connection to router or server 1 RU High Catalyst 2900-LRE-XL

  6. Cisco 575-LRE CPE • Converts VDSL to standard Ethernet • Integral POTS splitter for telephone attach • Passive function • 2 RJ11s for Line input and telephone • Supports 2-line phones • 1 RJ45 for Ethernet • Monitoring remotely from switch using web interface or CLI

  7. PS-1M-LRE-48 POTS Splitter • Non-homologated version • Supports 48 ports • No power supply - Passive device • 1 RU High • ADC & Corning to provide homologated splitter • Requires specific splitter

  8. LRE Overview Up to 4000’ Floor 1 Add-on as Needed Floor 2 PBX LRESwitches Floor 3 InternetRouter Floor 4 Management Gateway Floor 5 POTSSplitters Main Closet

  9. LRE Room Detail Up to 4000’ Existing Phone Wiring POTSSplitter InternetRouter LRE Switch ManagementGateway PBX Main Closet Guest Room PC Connection

  10. LRE EQUIPMENT LAYOUT

  11. LRE EQUIPMENT LAYOUT

  12. LRE Technology Overview • Enables the use of Ethernet over existing, unconditioned, telephone-grade wire • Enables Ethernet to coexist with “plain old telephone service” (POTS), Integrated Services Digital Network (ISDN) or private branch exchange (PBX) signaling services • Uses DSL coding and digital modulation techniques with Ethernet • Provides a point-to-point transmission that can deliver a symmetrical, full duplex, data rate of up to 15 Mbps • LRE products are simple to install and interface with any existing Ethernet solution

  13. LRE Technology—Bandwidth • LRE technology can operate at up to 17 Mbps • Enables transport of Ethernet data up to 15 Mbps • Transport overhead does not reduce the Ethernet bandwidth

  14. Standard xDSL Frequency Bands Downstream-1 Downstream-2 • Upstream and downstream transmissions separated by frequency (FDD) • 4 bands gives more flexibility for performance vs reach Upstream-1 Upstream-2 138 kHz 5.2 MHz 12 MHz 3.75 MHz 8.5 MHz

  15. LRE Frequency Bands Downstream TX - Switch RX - CPE Upstream RX - Switch TX - CPE • Downstream band reduced to allow use of digital “SmartPhones” • Upstream band may use standard frequencies or may use wider band for “private” installations • Maximum data rates 15Mb/s full duplex (private) or 15/5 for standard installations 900 KHz 3.75 MHz 5.2 MHz 9 MHz

  16. Summary of LRE Key Technology Features • Standard 10 Mbps Ethernet over regular twisted pair copper wire • Distances of up to 4000 ft (1.2 km) at full-duplex 10 Mbps, 15 Mbps high-speed mode (3500 ft, 1 km) • Simultaneous data and POTS, ISDN or PBX signaling services over the same line • Utilizes the most advanced multi-QAM modulation techniques • Minimum interference with other wire pairs and other services • Full-duplex point-to-point transmission • Longer distances can be reached at lower rates • Low power-implementation, minimum heat-dissipation issues • Supports testing and management capabilities

  17. Design Examples

  18. LRE LRE LRE Broadband Ethernet Solution Hotel Telecommuter Design Cisco 1700/2600 Catalyst 2900 XL Internet/ VPN - Local services/intranet - Video Servers BBSM Accounting/Billing/Security Cache Engine (Optional) Catalyst 2924-LRE Catalyst 2900 XL Long Reach Ethernet POTS Splitter PSTN Network PBX Aironet 340 CPE CPE VPN VPN VPN POTS Phone Room 1 Room 2 Conference Room

  19. LRE LRE LRE LRE LRE LRE Multi Dwelling UnitGigabit to the Central Office GSR Catalyst 3512 XL Catalyst 6500 Central Office Catalyst 2924-LRE PSTN Network POTS Splitter CPE CPE CPE CPE Aironet Cisco 1700 Aironet Cisco 1700 VPN VPN Apartment Telecommuter Apartment Telecommuter

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