1. Best Practices for Ensuring LAN Performance Transitioning Networks to Gigabit Ethernet

2. © 2008 JDSU. All rights reserved.2 Agenda  Main reasons and motivations for moving to Gigabit Ethernet  Ethernet technology overview  Pros and cons of ANSI/EIA/TIA-568-B tests  Step-by-step upgrade process to verify capability of existing pairs to carry 1000BASE-T

3. © 2008 JDSU. All rights reserved.3 Why transition the desktop to Gigabit Ethernet?  Increasing “need for speed”  Streaming audio/video –VoIP –YouTube –Distance learning –Radio/TV streams  On-Line applications –Presence/Collaboration –Time cards –Expenses –SAP, Oracle, etc.  Decreasing cost –Cost per switch port –Cost per Network Interface Card (NIC) –Most existing cabling infrastructure supports it

4. © 2008 JDSU. All rights reserved.4 10BASE-T  Standard released in 1990  First Ethernet over twisted pair standard  Category 3 Cabling  Two pairs used – 1 transmit/1 receive  Manchester Coding  16 MHz

5. © 2008 JDSU. All rights reserved.5 100BASE-TX  Standard released in mid-1990’s  Auto-Negotiation for speed and duplex  Category 5 Cabling  Two pairs used – 1 transmit/1 receive  Multi-Level Transition – 3 (MLT-3) Coding  31.25 MHz

6. © 2008 JDSU. All rights reserved.6 1000BASE-T  Standard released in 2000  Category 5 cabling  Four pairs used – 250 Mbps per pair full duplex  5 Level Pulse Amplitude Modulation (PAM-5)  80MHz Clock 0 1 2-Level Code 4-Level Code 11 01 00 10 11110 0 00 11 10 00

7. © 2008 JDSU. All rights reserved.7 10BASE-T/100BASE-TX Media Dependant Interface  Ethernet devices (NICs in PCs and routers) transmit on pins 1&2 and receive on pins 3&6. Referred to as MDI  Switches and hubs are wired MDI-X (transmit on pins 3&6, receive on pins 1&2) T568BT568A

8. © 2008 JDSU. All rights reserved.8 Ethernet Summary 10BASE-T100BASE-TX1000BASE-T Speed10 Mbps100 Mbps1000 Mbps Frequency16 MHz31.25 MHz80 MHz Pairs/Pins Used1-2 NIC Tx 3-6 NIC Rx 1-2 NIC Tx 3-6 NIC Rx Tx/Rx on all Pairs 1-2, 3-6, 4-5, 7-8

9. © 2008 JDSU. All rights reserved.9 IEEE 802.3 vs. ANSI/EIA/TIA-568-B.1  802.3 –Ethernet standard for rates from 1Mbps to 10Gbps over coax, twisted pair, and fiber optic cabling  568 –Specifies a generic telecommunications cabling system for commercial buildings

10. © 2008 JDSU. All rights reserved.10 ANSI/EIA/TIA-568-B.1 Tests – Pros and Cons  Pros –Required for some cable/connector vendor’s warranty for new installations –Certifies cable to meet category 5e, 6 or 6A –Measures a wide range of frequency-based results: NEXT PSNEXT ELFEXT PSELFEXT  Cons –Does not prove operation of Ethernet over cable link –Does not perform Ethernet Bit Error Rate Test –Does not measure overall system noise –May fail links that would work fine for 1000BASE-T

11. © 2008 JDSU. All rights reserved.11 Transitioning existing networks to 1000BASE-T  See if existing plant can support new speed BEFORE pulling new cables  CAT5 (or better) cabling already installed  No real need to run full EIA/TIA tests  Cost-effective alternative: –Run actual 1000BASE-T signals and analyze for errors –Bit Error Rate Test (BERT)

12. Step-by-Step Process Move to 1000BASE-T with confidence!

13. © 2008 JDSU. All rights reserved.13 Process Overview  Create a test plan  Test –Ensure correct cable is being disconnected –Basic cabling (wiremap/length) –1000BASE-T tests (SNR, Skew, BERT)  Verify Gigabit connectivity –Port Discovery –Ping  Document results

14. © 2008 JDSU. All rights reserved.14 Create a Test Plan  What cables are you going to test?  Where do they run from?  Where do they terminate?

15. © 2008 JDSU. All rights reserved.15 Test - Correct cable being tested?  Hub Flash  Cisco Discovery Protocol –Will ID the switch port  Once SURE, disconnect the cable at the switch and connect remote test device

16. © 2008 JDSU. All rights reserved.16 Test - Perform basic cabling tests  Remember 10/100 only needed 4 pins but gigabit needs all 8!  Opens/Shorts/Miswires/Split Pairs  Length

17. © 2008 JDSU. All rights reserved.17 Measure Delay Skew and SNR  Skew –Delay differential  SNR –Noise sources: NEXT/FEXT, echo noise, ambient noise Signal Noise SNR – “Distance” between Signal and Noise

18. © 2008 JDSU. All rights reserved.18 Bit Error Rate Test  Send actual 1000BASE-T signals (PAM-5)  Make sure the data sent from one end get to the other end without errors

19. © 2008 JDSU. All rights reserved.19 Connect to new switch port  Disconnect remote test device  Connect cable run to new switch port  Verify new port is configured correctly –Port Discovery Auto-Negotiation or manual setting? If Auto-Negotiation, what is being advertised?

20. © 2008 JDSU. All rights reserved.20 Verify Network Layer (IP) connectivity  Obtain IP host configuration –Dynamic Host Configuration Protocol (DHCP) –Or manual configuration  Ping network devices –Router –Domain Name System (DNS) –Any other IP device  Connect upgraded Ethernet device!

21. © 2008 JDSU. All rights reserved.21 Document Results  Cabling plan –Update documentation for cabling runs  Test Results –Use for future reference/troubleshooting

22. © 2008 JDSU. All rights reserved.22 Summary  For the IT manager –Using existing infrastructure is cost effective –Need to test cabling first –Speed certification ensures 1000BASE-T will work  For the cabling contractor –New revenue opportunities  For everyone –JDSU has the tools and expertise to help make you successful!

23. © 2008 JDSU. All rights reserved.23 Questions and Resources?  Q&A  www.JDSU.com/know for: www.JDSU.com/know –Validator-NT product informationproduct information –View Validator-NT product demoproduct demo –Locate a distributor –See full line of JDSU Network and Enterprise Test solutions  Recorded Webinar will be made available later this week  Contact Us: –nettraining@jdsu.comnettraining@jdsu.com