Best Practices for Ensuring LAN Performance Transitioning Networks

Best Practices for Ensuring LAN Performance Transitioning Networks to Gigabit Ethernet

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 1000 BASE-T 2 © 2008 JDSU. All rights reserved.

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

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

100 BASE-TX § § § 5 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 © 2008 JDSU. All rights reserved.

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

10 BASE-T/100 BASE-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) T 568 B 7 © 2008 JDSU. All rights reserved. T 568 A

Ethernet Summary 10 BASE-T 100 BASE-TX 1000 BASE-T Speed 10 Mbps 1000 Mbps Frequency 16 MHz 31. 25 MHz 80 MHz Pairs/Pins Used 1 -2 NIC Tx 3 -6 NIC Rx 8 © 2008 JDSU. All rights reserved. Tx/Rx on all Pairs 1 -2, 3 -6, 4 -5, 7 -8

IEEE 802. 3 vs. ANSI/EIA/TIA-568 -B. 1 § 802. 3 – Ethernet standard for rates from 1 Mbps to 10 Gbps over coax, twisted pair, and fiber optic cabling 9 © 2008 JDSU. All rights reserved. § 568 – Specifies a generic telecommunications cabling system for commercial buildings

ANSI/EIA/TIA-568 -B. 1 Tests – Pros and Cons § Pros § Cons – Required for some cable/connector vendor’s warranty for new installations – Certifies cable to meet category 5 e, 6 or 6 A – Measures a wide range of frequency-based results: • • 10 NEXT PSNEXT ELFEXT PSELFEXT © 2008 JDSU. All rights reserved. – 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 1000 BASE-T

Transitioning existing networks to 1000 BASE-T § See if existing plant can support new speed BEFORE pulling new cables § CAT 5 (or better) cabling already installed § No real need to run full EIA/TIA tests § Cost-effective alternative: – Run actual 1000 BASE-T signals and analyze for errors – Bit Error Rate Test (BERT) 11 © 2008 JDSU. All rights reserved.

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

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

Create a Test Plan § What cables are you going to test? § Where

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 15 © 2008 JDSU. All rights reserved.

Test - Perform basic cabling tests § Remember 10/100 only needed 4 pins but

Measure Delay Skew and SNR § Skew – Delay differential § SNR – Noise

Bit Error Rate Test § Send actual 1000 BASE-T signals (PAM-5) § Make sure

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? 19 © 2008 JDSU. All rights reserved.

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! 20 © 2008 JDSU. All rights reserved.

Document Results § Cabling plan – Update documentation for cabling runs § Test Results

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

Questions and Resources? § Q&A § www. JDSU. com/know for: – – Validator-NT product information View Validator-NT product 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. com 23 © 2008 JDSU. All rights reserved.