============================================================================= DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT ============================================================================= EBONE Boundary System Technical Specification Stockholm, April 25, 1992. Abstract The goal is to implement, and put into production, a shared infrastructure for open architecture protocols in Europe. EBONE supports two architectures, "OSI" and "TCP/IP" and this document describes the way of establish a Ebone Boundary System (EBS). For EBONE-92 the proposed requirements should be interpreted as recommendations. CONTENT 1. Technical specification and Implementation 1.1 Environment 1.1.1 Power 1.1.2 Aircondition/Cooling 1.1.3 Fire protection 1.1.4 Physical security 1.2 The EBS router 1.2.1 Mounting 1.2.2 Physical interfaces 1. Technical Specification and Implementation. 1.1. Environment. The goal with EBONE is to provide a production stable networking infrastructure within Europe. As we all know, no chain is stronger than its weakest link. The EBONE systems has to be put in a 'friendly' (for this kind of equipment) environment. 1.1.1. Power. The primary power feeder for the entire EBONE system (including all external components such as terminals and other systems in direct communication like transmission equipments) should be unique to the EBONE system. Therefore, power for all components should be derived from the same power distribution panel. All equipments must be grounded to the same single point. If, for any reason, this cannot be implemented, provide special signal interference handling whenever a communication path goes between two devices powered from different feeders. Special signal interface handling may include opto-isolation, or any means which maintains logic reference isolation between the communicating components. The EBONE system shall be powered from uninterruptable power source (UPS), this system provides the greatest degree of power regularity and power line isolation. An UPS is a source of ac power not effected by fluctuations in commercial power, and therefore guards the connected system against even momentary voltage disturbances. The UPS system shall be able to support the EBS for not less than a 120 minute outage of commercial power. It shall also be possible to bypass the UPS and remove it for maintenance without the need of interrupt the EBS. The current drained through a fuse shall be less than 50% of the rated value. 1.1.2. Air Conditioning and Cooling Recommendations. The room that houses the EBS needs sufficient air conditioner, effective enough to meet the environmental specification for both the hottest and coldest day of the year. The air conditioner shall have at least two separate circuits. In case of multiple circuits, make sure that there is a spare circuit. Some buildings have centralized water cooling systems. If such a system is used make sure that the building has enough emergency backup, or arrange for an alternate source of cooling water. Make sure that, in case of a fallback to UPS power, that cooling capacity is provided through UPS power that the equipment does not 'fry' itself. Recommended environmental specifications. Temperature 21 C Relative humidity 50% Dew point 10 C Recommended control tolerance: Temperature 18 C to 24 C Relative humidity 40% to 60% Temperature rate of change 3 C/hr Humidity rate of change 6%/hr 1.1.3. Fire protection. As the rules are different from country to country, no general rules could be set. A non-destructive extinguishing system is preferred. Examples of non-destructive extinguishing system are carbon dioxide and bromotriflouromethane (halon 1301). 1.1.4. Physical security. The area surrounding the EBS shall provide such physical protection that it is unlikely that it may be sabotaged or manipulated by unauthorized personnel. 1.2. The EBS router. As EBS, a router with at least 4 Megabyte of RAM is needed. At the time of the writing a good example is an CISCO AGS+. The router should be configured with a maximum of 16 serial interfaces. A general opinion is to have only serial interfaces attached to the EBS if possible. A rule of thumb here is to try to group links to RBS systems having much traffic between them on the same interface board, using 4 port serial circuit cards to offload the backplane bus if possible. By definition, a EBS has two international links, and they shall, as far as possible, be routed in separated paths from the EBS. Try to avoid shared resources like cross-connects, multiplexors, telecom cables, G703-704/V35 converters etc. EBONE EBONE ! ! --------------------------------- ! BANDWIDTH MANAGEMENT ! ! ! ! BACKBONE TRAFFIC ROUTING ! <- EBS ! ! ! ROUTING TO/FROM THE REGION ! --------------------------------- ! <- EBONE Boundary Interface ========================================================================= ! ! --------------------------------- --------------------------------- ! ACCESS (AND CONTROL) TO/FROM ! ! ACCESS (AND CONTROL) TO/FROM ! ! THE BACKBONE SERVICES ! RBS ! THE BACKBONE SERVICES ! ! ! ! ! ! REGIONAL TRAFFIC ROUTING ! ! REGIONAL TRAFFIC ROUTING ! --------------------------------- --------------------------------- ! ! REGIONAL NETWORK REGIONAL NETWORK FIGURE 1. 1.2.1. Mounting. The EBS router shall be installed in a 19-inch cabinet which have both front and back doors that can be closed. There shall be enough air-flow through the cabinet to take away all the heat produced by the housed equipment with the doors closed. As much as possible of the needed equipment should be placed into the same rack. If there are RBS systems at the same location they may be placed in the same cabinet. The goal is to make the EBS system as compact as possible to minimize the risk of interruptions caused by accident while working on other equipment housed in the same location. 1.2.2. Physical interfaces. Below list is EBS accepted interfaces: - V.35 or HSSI with PPP (RFC 1171) encapsulation. - Ethernet (AUI Male Port provided by the EBS) - FDDI (Dual Attachment). - Frame Relay (CCITT I.122) - RS.449 - X.21 Depending on speed and local conditions the WAN links may be delivered either as V.35 or G703, in the case of G703 (G704) the appropriate converters to V.35 must be provided. EBONE-92 assumes "clear channel service" point-to-point links for its implementation. Future networks may use some kind of "level 2" WAN service. Regarding Frame Realy it shall be noted that: a) The EBONE will only connect regions. It will not serve local sites or end users. The EBONE organization shall decide how the term "region" should be interpreted in uncertain cases. b) If the Frame Relay induces overload in an EBS router, the acceptance of Frame Relay will be reconsidered. The EBONE organization will decide on what shall be regarded as overload in EBS routers.