ICMPv6把报文种类划分为两大类，即差错报文 (error message) 和提供信息的报文 (informational message)，并取消了使用得很少的ICMP报文。
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RIP最新的增强版是RIP - 2规范，它允许在RIP报文中包含路由汇总、无类域问路由、变长子网掩码等信息，并提供了简单的认证机制。
The new version of RIP is RIP-2. It allows packets to include such information as routing summary, classless interdomain routing, variable length subnet mask and simple authentication.
评估清单的解答为灾难报文提供了必要的信息，灾难报告格式已经在前一节做了概要说明。
The answers to the checklist questions will provide the information needed to complete the disaster cable formats outlined in the previous section on cable formats.
该方法能提供报文服务和短帧信息结构，满足现场通信的实时性要求。
According to this solution, the requirement of real-time in field communication can be fulfilled as a result of its message service and short frame structure.
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