A buffer overflow, or buffer overrun, occurs when a process attempts to store data beyond the boundaries of a fixed-length buffer.

当进程尝试将数据储存到固定长度的缓冲区的范围之外时，就会出现缓冲区溢出。

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For processing variable length packet, current routers usually separate the packet into the smaller fixed-size one before buffering, or simply provide the packet with a fixed-length buffer.

现代网络设备常采用固定长度缓冲区机制来缓冲可变长度数据包，或采用信元机制将可变长度数据包进行定长化处理后再完成缓冲操作。

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