Abstract
A Link is an OTcl object that connects two nodes and carries packets from the beginning node to the terminating node. This chapter focuses on a class of most widely used Link objects, namely, SimpleLink objects. Conveying packets from one node to another, a SimpleLink object models packet transmission time, link propagation delay, and packet buffering. Here, packet transmission time refers to the time required by a transmitter to send out a packet. It is determined by the link bandwidth and packet size. Link propagation delay is the time needed to convey a data bit from the beginning to the end of a link. In the presence of bursty traffic, a transmitter may receive packets while transmitting a packet. The packets entering a busy transmitter could be placed in a buffer for future transmission. SimpleLink also models this packet buffering mechanism.
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© 2012 Springer Science+Business Media, LLC
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Issariyakul, T., Hossain, E. (2012). Link and Buffer Management. In: Introduction to Network Simulator NS2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4614-1406-3_7
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DOI: https://doi.org/10.1007/978-1-4614-1406-3_7
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Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4614-1405-6
Online ISBN: 978-1-4614-1406-3
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