When error correction is not required, UDP provides unreliable datagram service that enhances network throughout at the host-to-host transport layer.

如果没有要求更改错误，则UDP提供不可靠的数据服务，从而增加网络在传输层的吞吐量。

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First, a router with the basic ability of address resolving, datagram forwarding, error controlling and SNMP agency is designed and made.

首先，设计并实现一个具有地址解析、报文转发、差错控制及SNMP代理等基本功能的路由器。

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