ISO/IEC 10747:1994标准是一种用于中间系统之间交换路由信息的协议,以支持ISO 8473 PDU的转发。该标准定义了一种路由信息协议(Routing Information Protocol,RIP),用于在中间系统之间交换路由信息。该协议的目的是使中间系统能够了解到网络中的路由信息,以便正确地转发数据包。
该标准规定了RIP的工作原理和数据格式。RIP使用UDP协议进行通信,其默认端口号为520。RIP通过交换路由信息来维护路由表,路由表中包含了到达目的网络的最佳路径。当网络拓扑发生变化时,中间系统会向相邻的中间系统发送更新信息,以便更新路由表。RIP使用跳数(hop count)作为度量标准,即到达目的网络所需经过的中间系统数量。RIP支持最多15个中间系统的网络。
该标准还规定了RIP的一些限制和安全措施。例如,RIP不支持VLSM(Variable Length Subnet Mask,可变长度子网掩码),因此所有子网必须使用相同的子网掩码。此外,RIP没有身份验证机制,因此可能会受到欺骗攻击。为了防止这种攻击,可以使用RIP认证机制,即在RIP消息中添加密码字段,以便验证消息的真实性。
总之,ISO/IEC 10747:1994标准定义了一种用于中间系统之间交换路由信息的协议,以支持ISO 8473 PDU的转发。该协议简单易用,但也存在一些限制和安全隐患,需要在实际应用中加以注意。
相关标准
- ISO/IEC 8473:1988 Information processing systems - Data communications - Protocol for providing the connectionless-mode network service
- ISO/IEC 10589:2002 Information technology - Telecommunications and information exchange between systems - Intermediate system to Intermediate system intra-domain routeing information exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service (ISO 8473)
- ISO/IEC 11442:1994 Information technology - Telecommunications and information exchange between systems - Intermediate system to Intermediate system routeing exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service (ISO 8473)
- ISO/IEC 10748:1994 Information technology - Telecommunications and information exchange between systems - Protocol for exchange of inter-domain routeing information among intermediate systems to support forwarding of ISO 8473 PDUs
- ISO/IEC 15802-3:1998 Information technology - Telecommunications and information exchange between systems - Intermediate System to Intermediate System intra-domain routeing information exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service (ISO 8473) - Part 3: Integrated Intermediate System to Intermediate System (IS-IS) routing protocol for use in larger networks