Marcelo Ricardo Leitner

Recent Posts

SCTP Stream Schedulers and User Message Interleaving

As some may have noticed already, a new request for comments (RFC) regarding the Stream Control Transmission Protocol (SCTP), RFC8260, has been published recently. This RFC defines two major changes for the SCTP protocol, originally defined in RFC4960:

1) Stream schedulers, which control which stream gets served next when sending a data chunk over the wire.
2) I-Data chunk, which extends DATA to overcome some of its limitations.

This blog post will go over the two changes, pointing out the benefits of using the stream schedulers, and especially when using them together with the new I-Data chunks.

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On link modeling, network emulation and its impacts on applications

In this blog post, I’ll guide you through the most important characteristics that define a ‘link’ in packet-switched networks, how they can impact your application, give some examples of real world parameters and how to use NetEm to emulate them.

In every packet-switched network, you will notice characteristics that are intrinsic to them and that varies depends on the communication channels being used. Such characteristics are bandwidth, delay (including jitter), packet loss, packet corruption and reordering.

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