Non-designated ports discard data traffic. These ports are called blocking ( B) or discarding ports.
非指定埠会丢弃资料流量。这些埠称为阻隔（B）或丢弃埠。
However, you can configure application-level tracing to always store the most recent tracing data, discarding the oldest data when the maximum number of requests is reached.
然而，您可以设定应用程序层级追踪一定要储存最新的追踪资料，并在达到要求的最大数目时舍弃最旧的资料。
We can overcome this by separating the three channels and discarding those with no data.
我们可以通过分隔3通道并忽略没有数据的地方来克服这一缺陷。
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