DS3/E3 over Ethernet Pseudowire Gateway V5.
Legal Preface: COPYRIGHT & TRADEMARKS Copyright © 2007-2010 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.
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TABLE OF CONTENTS CHAPTER 1: DESCRIPTION AND REQUIREMENTS.....................................................................................................6 CHAPTER 2: QUICK SET-UP.................................................................................................................................7 CHAPTER 3: FRONT PANEL ..................................................................................................................................7 FRONT PANEL INDICATORS ....................
CHAPTER 9: TDM LAN PACKET FORMAT ........................................................................................................17 GENERAL.....................................................................................................................................................17 TRANSPORT LAYER........................................................................................................................................17 CHAPTER 10: TROUBLESHOOTING................................
Chapter 1: Description and Requirements Chapter 1: Description and Requirements The E3Switch TDM-over-PSN pseudowire gateways described herein are used in pairs to extend a full or fractional E3 or T3/DS3 TDM circuit over an intermediate Ethernet Layer-2 packet switched network (PSN). The TDM circuit may be channelized or unchannelized and may contain framed or raw/encrypted data. The gateway will regenerate the outgoing TDM clock and alarm conditions being received at the remote end.
Chapter 2: Quick Set-up Chapter 2: Quick Set-up Attach the gateway 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 gateway 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 4: Remote Management HTTP and SNMP Chapter 4: Remote Management HTTP and SNMP Gateways contain both an HTTP management interface, which may be accessed via a web browser, and an SNMPv2c agent. Unit's IP/MAC Address The source Ethernet MAC address of E3Switch gateways is 00:50:C2:6F:xx:xx. The gateway's current IP and MAC addresses are always both shown at the HTTP management screen.
Chapter 4: Remote Management HTTP and SNMP The following methods may be used to determine a gateway's IP address if lost or forgotten. Note that once determined, management communication with the unit may only be possible from a host configured to the same IP subnet address if the unit's default router address is invalid. To manually discover a unit's IP address, unplug all LAN and BNC cables from the gateway and power cycle the unit.
Chapter 4: Remote Management HTTP and SNMP – SNMP VACM Security Warning – As shipped, the default “safe_ro_view” is secure but not private. View based access model VACM for SNMPv2c provides good restriction of access to only specified statistics but no data privacy and minimal user authentication. When a specific variable is enabled for reading or writing, from a security perspective it should be considered either public for reading or public for writing.
Chapter 4: Remote Management HTTP and SNMP SNMP configuration of various parameters such as community names and trap destinations is accessed through the HTTP management interface and is implemented as a configuration file having an snmpd.conf structure. Snmpd.conf is described by third parties in publicly available documents. Statistics and settings accessible via SNMP are called MIB-variables and are organized in a hierarchical tree topology.
Chapter 5: Operating Modes and Configuration Packet Flow Packet Order 802.1p Class of Service (CoS), and DiffServ when appropriate, levels are configurable to ensure timely delivery of TDM packets through the LAN. While traveling across packet switched networks, received packets may arrive out of sequence for a variety of reasons. E3Switch gateways will use sequence numbers, present in the packets, to restore original packet order.
Chapter 5: Operating Modes and Configuration Port to Port Packet Flow LAN-to-LAN Full LAN-to-LAN packet flow can be enabled on a unit, if desired. This might be useful if it was desirable for incoming SFP management packets to exit the copper LAN Port 2 of the unit, along with the packets carrying TDM data, in order to reach and manage the remote gateway. LAN-to-LAN unidirectional flow for monitoring may also be configured if desired.
Chapter 5: Operating Modes and Configuration SFP Second LAN Port The SFP LAN Port 1 hardware exists on all gateways shipped and allows an SFP transceiver to enable outof-band management, through either LAN port, or fiber-optic LAN connections of 10km or more. Refer to interoperability section of this document for compatible SFP transceivers.
Chapter 5: Operating Modes and Configuration Chapter 6: Interoperability LAN The LAN ports of the gateway support, at a minimum, all 100BaseTX Full-Duplex Ethernet connections up to maximum line lengths and are set to auto-MDI/MDIX to automatically detect/correct crossover vs straight LAN cable and autonegotiate for full-duplex and pause frame modes with the attached LAN equipment. Passwords may be purchased to upgrade to enhanced LAN port modes as described elsewhere in this manual.
Chapter 6: Interoperability direction at a rapid, consistent periodic rate, which is proportional to the difference in clock speeds of each TDM direction. Chapter 7: Telecom Connections Framing and Physical Link The gateway can transmit the LAN data over a variety of E3, T3/DS3 links (with the appropriate media gateway) such as fiber optic, microwave radio, laser, copper, satellite, or a combination. The gateway may be used with a standard (i.e., M13, M23, clear-channel, C-Bit or G.
Chapter 8: LAN Connections and Performance by the industry at the inception of 100BaseTX, resulting in some older LAN equipment not understanding the gateway's autonegotiation advertisement of strictly full-duplex capability. It is highly desirable to leave autonegotiation enabled so that changing attached LAN equipment does not result in the new equipment defaulting to half-duplex if set to autonegotiate. Autonegotiation must always be enabled for 1000Mbit/s links.
Chapter 10: Troubleshooting The least frequent cause of problems will be the hardware of the gateway itself. This statement is not due to a narcissistic point of view, but rather to the simplicity of configuration features on the gateway and the low-component count. A microwave radio link, for example, has waveguides that can fill with water, antennas that can become misaligned, foreign objects that can block the path. From a failure point of view, the gateway is a simpler device.
Chapter 10: Troubleshooting 3. Ensure a proper LAN cable is being used. Straight-through or crossover cabling is acceptable. The LAN light of the gateway port to which any LAN is attached should be illuminated and green. If not, ensure that the attached equipment is set for autonegotiation and can accept 100BaseTX Full-Duplex links. Refer to front panel section of this document for other LAN light colors. 4.
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Chapter 12: Technical Specifications and Standards Chapter 12: Technical Specifications and Standards Please see separate specification datasheet.
