High-Speed Ethernet to Single/Dual DS3/E3 Network Extender V5.
Legal Preface: COPYRIGHT & TRADEMARKS Copyright © 2007 E3Switch LLC. All Rights Reserved. All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies. LIMITED WARRANTY E3Switch LLC (E3Switch) guarantees that every unit is free from physical defects in material and workmanship under normal use for one year from the date of purchase, when used within the limits set forth in the Specifications section of this User Guide.
This product has been tested and found to comply with the limits for Class A Information Technology Equipment according to CISPR 22/European Standard EN 55022. The limits for Class A equipment were derived for commercial and industrial environments to provide reasonable protection against interference with licensed communication equipment. Attention: This is a Class A product.
TABLE OF CONTENTS CHAPTER 1: DESCRIPTION AND REQUIREMENTS.....................................................................................................6 CHAPTER 2: QUICK SET-UP.................................................................................................................................7 CHAPTER 3: FRONT PANEL ..................................................................................................................................8 FRONT PANEL INDICATORS ....................
AUTONEGOTIATION........................................................................................................................................18 LAN CABLING.............................................................................................................................................19 LAN SEGMENTATION AND PACKET SWITCHING.................................................................................................19 LAN BUFFERING, LOADING AND FLOW CONTROL ..........................
Chapter 1: Description and Requirements Chapter 1: Description and Requirements The E3Switch converters described herein are used in pairs to connect two Ethernet LANs via either one or two E3 or T3/DS3 links at up to 88Mbit/s actual user data rate per direction. The LAN interface is RJ45 100/1000BaseTX copper or SFP 1000BaseX fiber optic. The telecom link must be point-to-point and may support either framed or unframed data. The two converters must have an E3 or T3/DS3 link between them.
Chapter 2: Quick Set-up Chapter 2: Quick Set-up Attach the converter to a power source. The front panel lights should illuminate. Green is normal; orange indicates an error. Attach an Ethernet UTP5 cable from your LAN equipment to the RJ-45 LAN Port 2. The converter can perform automatic cross-over vs straight-through cable adaptation. The LAN 2 light will change from orange to green if a properly negotiated link has been established.
Chapter 3: Front Panel Chapter 3: Front Panel Front Panel Indicators All Indicators: Green indicates normal operation. Orange indicates an error condition. Black indicates a disabled port. DS3/E3 1/2: Green if the unit has synchronized to a valid carrier signal pattern from the remote unit and data can be transferred on the link. Flashes black each time a packet is received on this port. Orange indicates no valid connection or loss of receive sync with remote unit.
Chapter 4: Remote Management HTTP and SNMP Other than the e3switch.local addresses described below, all IP addresses used within the converter's management interface must be in xxx.xxx.xxx.xxx numeric format rather than a human-readable DNSresolvable hostname. Automatic Link-Local IP Address E3Switch converters are shipped with an initial IP address that conforms to recent zero-configuration linklocal standards.
Chapter 4: Remote Management HTTP and SNMP Management Passwords Note: In order to log in with Internet Explorer 7+ or if difficulty occurs when logging in with credentials known to be valid, firmware prior to October 18th, 2007 must be upgraded to ameliorate a new feature present in IE7 authentication messages. This is also the case with some versions of Opera. Contact the factory for an upgrade or attempt to login with FireFox, Mozilla, or a browser earlier than IE7+ for immediate resolution.
Chapter 4: Remote Management HTTP and SNMP Variables in the groups: interface, ds3, dot3 & mau, control the link datapath; allowing write access allows disabling the link. Specific variables disabled for all write users are secure. Specific statistics disabled for all read users are invisible and secure.
Chapter 4: Remote Management HTTP and SNMP Firmware upgrades may be transferred to the converter via the LAN port (or DS3/E3 port, if management of the remote converter is enabled). A hardware reset, which will interrupt link data flow for several seconds, will be required at some point after the transfer in order to begin using the new firmware. Instructions for performing the TFTP transfer are included with all firmware shipments.
Chapter 5: Operating Modes and Configuration messages are transmitted in the C-Bits of the frame and do not decrease bandwidth available for data. PMDL Circuit ID messages facilitate confirmation of the data source when presented with a pair of unlabeled BNC cables. Packet Flow Packet Order and Channel Bonding/Aggregation On single-telecom converters, LAN packet delivery order is guaranteed with the exception that high-priority 802.1p CoS packets may by transmitted before lower priority packets.
Chapter 5: Operating Modes and Configuration Packets arriving at one telecom port will not be passed out the other, so it is not possible to use one dualchannel converter in a 3-unit topology at the junction of a Y or V; use two converters at such a junction with a LAN switch or router to properly control traffic flow to the branches of such a topology. LAN-to-LAN LAN-to-LAN packet flow can be enabled, if desired, in units where the second SFP/LAN port has been enabled/purchased.
Chapter 5: Operating Modes and Configuration LAN Port Speed 1000Mbit/s LAN speeds are only available if firmware enabling the SFP port option or GbE LAN has been purchased. 100Mbit/s is generally preferred over 1000Mbit/s, which generates significantly more power-requirements, heat, and radiated noise even in the absence of packet flow. 1000Mbit/s may slightly reduce path latency, as an incoming LAN packet must be fully received before being forwarded to an outgoing port.
Chapter 5: Operating Modes and Configuration As shipped, the unit will accept management packets with any VLAN tags and attempt to respond to the same. For more robust performance, specific VLAN tag settings can be configured. These settings only apply to packets to and from the converter's management entity. VLAN tags in packets destined for the DS3/E3 link are passed unaltered. VoIP / Video or High-CoS Priority Frames Receive queue space is reserved in the converter to allow frames with high 802.
Chapter 6: Interoperability If LAN equipment appears to disable a port connected to the converter, be aware that “sophisticated” routers and switches will often disable a LAN port if data being sent appears similar to data or MAC addresses being received, as is the case in telecom loopback. Autonegotiation problems There are rare cases with older LAN equipment in which it may be necessary to disable autonegotiation.
Chapter 6: Interoperability Routers and Switches Be aware that during DS3/E3 loopback testing, “sophisticated” routers and switches will often disable a LAN port if data being sent appears similar to data or MAC addresses being received. This can cause confusion.
Chapter 8: LAN Connections and Performance There are rare cases with older LAN equipment in which it may be necessary to disable autonegotiation. If crc-errors or short packet errors are seen in the management statistics of the LAN port, the attached LAN equipment has probably configured itself to half-duplex mode and colliding packets are being lost. In such a case, autonegotiation should be disabled on both the converter and the attached LAN equipment, with both forced to 100BaseTX full-duplex.
Chapter 8: LAN Connections and Performance reassembly order is guaranteed (with bypass of high-CoS traffic) if configured in “bonded” mode (on firmware beginning March 2008). For “load-balance” configuration, or on firmware shipped before March 2008, packet order is generally maintained but not guaranteed. Refer to the configuration section of this document for further discussion.
Chapter 10: Troubleshooting The next most frequent source of problems generally arises from faulty cabling or connectors or incorrect cable type. Cabling must be UTP5 or better for LAN and 75-Ohm rather than 50-Ohm for telecom. If long telecom cable runs or an electrically noisy environment exists, high-quality coaxial cable will be required. The least frequent cause of problems will be the hardware of the converter itself.
Chapter 10: Troubleshooting • local loopback using a short DS3 cable, since connectors and cables are a much more likely source of problems. Local loopback can also often result in LAN equipment attached to the converter to immediately disable the LAN port as a flood-prevention measure. FEAC Loopback Requests: All intermediate equipment on the DS3 path and the converter must be in C-Bit mode for a FEAC request to be forwarded and acted upon.
Chapter 10: Troubleshooting ▪ snmpset -v 1 -c public .1.3.6.1.2.1.10.30.5.1.9.6 i 1 (terminates loopback as in dsx3NoLoop(1)) ▪ snmpget -v 1 -c public .1.3.6.1.2.1.10.30.5.1.9.6 (returns current loopback value of DS3 Port 2) • SNMP FEAC Initiation: See above for VACM MIB write-access description first. An SNMP request can set the local converter's dsx3SendCode variable to dsx3SendLineCode, which requests the remote converter to loopback DS3 data received.
Chapter 10: Troubleshooting The default ping generates approximately one 64-byte packet per second. This is not a robust test. If convenient, locate a ping program or set command line parameters to generate perhaps 50 pings per second and try both small packets and large 1400-byte packets. Be aware that packets larger than 1400 bytes sometimes uncover bugs in the software of ping programs.
Chapter 10: Troubleshooting 5. If ping is available, ping from the local machine to a machine on the same local LAN. Then ping to the machine or router, on the same local LAN, that is directly connected to the converter. Then ping to the machine or router, on the remote LAN, that is directly connected to the remote converter. Then ping to another machine on the remote LAN. During pinging, attempt to generate high traffic loading on the network. 6.
Chapter 11: Third Party Copyright Notices The Net-SNMP Copyright ---- Part 1: CMU/UCD copyright notice: (BSD like) ----Copyright 1989, 1991, 1992 by Carnegie Mellon University Derivative Work - 1996, 1998-2000 Copyright 1996, 1998-2000 The Regents of the University of California All Rights Reserved Permission to use, copy, modify and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appears in all copies and that both
Chapter 11: Third Party Copyright Notices ---- Part 4: Sun Microsystems, Inc. copyright notice (BSD) ----Copyright © 2003 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, California 95054, U.S.A. All rights reserved. Use is subject to license terms below. This distribution may include materials developed by third parties. Sun, Sun Microsystems, the Sun logo and Solaris are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
Chapter 11: Third Party Copyright Notices 3. You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and 4.
Chapter 12: Technical Specifications and Standards Chapter 12: Technical Specifications and Standards General E3Switch often provides custom hardware and software solutions to meet requirements not shown below. Indicators: User Data Rate: Aggregate Data Rate: Management: LAN: VoIP/Video: Firmware Upgrades: LED – LAN Status/Rx; Telcom Status/Rx; Bit Error. Single: DS3/T3: 43.4 Mbit/s; E3: 33.2 Mbit/s. Dual DS3/T3: 86.8 Mbit/s; E3: 66.4 Mbit/s DS3/T3: 44.736 Mbit/s; E3: 34.368 Mbit/s.
Chapter 12: Technical Specifications and Standards ©2011, E3Switch LLC Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners.
