核心路由器

• As core router may be used in all kinds of environments , it must implement multiple routing protocols , including rip , ospf , is - is , bgp and other interior or exterior routing protocols
  核心路由器可能应用于各种环境，它必须提供多种路由协议，包括rip 、 ospf 、 is - is以及bgp等内部和外部网关路由协议。
• The paper also discusses these routing polices deeply . having been used and tested in the environment of " yh 9108 " core - router , our bgp - 4 system is considered to have high stability , good interoperation and high performance
  经过在“银河玉衡”核心路由器环境下的使用和测试机构的测试，表明实现的bgp - 4协议具有较好的稳定性、较强的互操作性和良好的性能。
• This paper provides our hot swap solutions on a specific core router called gf8516 according to the kind of hot swap structure of routers that this paper presents and the software connection states that this paper defines
  针对采用网络处理器进行设计的gf8516核心路由器，本文根据提出的路由器热切换结构和定义的状态转换关系给出了gf8516核心路由器的热切换解决方案。
• To be high available , a . core router should allow the insertion and extraction of boards without adversely affecting system operation . also it should allow its system reconfiguration and its fault recovery to take place with no system down time and minimum operator interaction
  为了满足高可用性的要求，核心路由器应该支持系统运行时的设备板的插入和拔出，支持在不关闭系统和操作员干预尽可能少的情况下的系统重组和恢复，支持对故障的隔离。
• So core router was developed , which can forward ip packets at line - speed , it supports several kinds of lan connection including atm . this paper focus on how to design line card of router fitting for atm networks with verilog , and how to design and schedule packet , then implement it with fpga
  本文的研究背景是核心路由器项目，它支持多种网络连接， atm网络也是其中之一。本文主要用verilog设计了核心路由器的atm网络的路由器接口卡，设计了报文调度器，并用fpga实现。
• Through performance analysis under multi - priority burst traffic , we demonstrate that the load - balancing algorithm is efficient , and the switch system not only provides excellent performance to real - time traffic , but also efficiently allocates bandwidth among other traffic of lower priorities
  另一方面，随着计算机网络的普及和终端用户的增多，网络流量和业务种类呈现爆炸性增长，这就使得探讨核心路由器中如何取得更好的qos控制具有重要的研究意义和广阔的应用前景。
• When this paper introduces the hot swap design and implementation of each level of the gf8516 core router , it puts emphasis on the design and implementation of the hot swap interface board drivers and the hot swap support platform including the common management module of network processors , the hot swap system driver , and so on
  在介绍gf8516核心路由器的各层热切换的设计与实现时，本文着重介绍了包括网络处理器公共管理平台及热切换系统驱动程序等组成部分的热切换支撑平台以及热切换接口模块驱动组件的设计与实现。
• This paper studies the load - balancing algorithm and quality of service control mechanism in a 320gb s switch system , which incorporates four packet - level parallel switch planes . eight priorities for both unicast and multicast traffic are implemented , and the highest priority with strict qos guarantee is designed for real - time traffic
  一方面，近年来光传输网络的飞速发展使得骨干网的瓶颈转移到了负责交换和路由功能的核心路由器，即要求核心路由器支持更高线速，如10gb s 40gb s等。
• This paper considers the hot swap processes and the control mechanisms for these processes that a hot swap router may have . then this paper presents a kind of hot swap structure for core routers . also this paper defines the software connection states that the insertion and extraction of hot swap interface boards may cause
  本文研究了核心路由器的热切换处理过程和控制机制，给出了一种基于交换网络的核心路由器的热切换结构，定义了接口模块热切换时系统的状态及状态之间的转换关系。
• Secondly , the paper describe the principle of atm network , and the function of ' sar " ( segmentation and reassembly ) and the format of packet aal5 , and introduce the basic idea of ipoa , and the design project and implementing of the control chip . later , the paper introduce the logic function and operational principle of packet buffer control chip and prove the feasibity and correctness of the arithmetic . at last the paper introduce crc - 32 arithmetic based on look up and implement it with hardware
  接着详细论述了核心路由器atm网络实现的原理，包括“ sar ” ( segmentationandreassembly )功能和aal5报文的格式， ipoa基本思想，以及控制芯片的设计方案和实现途径等。然后又论述报文缓存区控制芯片的工作原理和逻辑功能等，并对算法的可行性，正确性等进行论证。最后介绍了一种基于查表的crc - 32算法的原理及其硬件实现。