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47 lines
1.4 KiB
Markdown
47 lines
1.4 KiB
Markdown
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ZEP packet dispatcher
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=====================
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The ZEP dispatcher is a simple daemon that forwards ZEP packets to all connected
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nodes.
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```
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usage: zep_dispatch [-t topology] [-s seed] [-g graphviz_out] <address> <port>
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```
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By default the dispatcher will forward every packet it receives to every other
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connected node (flat topology).
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Advanced Topology Mode
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----------------------
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It is possible to simulate a more complex topology as well as packet loss by
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specifying a topology file.
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The file format is:
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```
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<node_a> <node_b> [weight_ab] [weight_ba]
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```
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This line defines a connection between <node_a> and <node_b>.
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The weight of the edge <node_a> -> <node_b> is <weight_ab>.
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An edge weight is a float value between 0 and 1 that represents the probability of
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a successful packet transmission on that path.
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A weight of `0` would mean no connection, whereas a weight of `1` would be a perfect
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connection. Intermediate values are possible, e.g. `0.6` would result in a packet
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loss probability of 40%.
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The weights can be omitted.
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If both weights are omitted, a perfect connection is assumed.
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If <weight_ba> is omitted, a symmetric connection is assumed and <weight_ab> is used
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for both directions.
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refer to the file `example.topo` for an example.
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There can only be as many nodes connected to the dispatcher as have been named in
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the topology file.
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Any additional nodes that try to connect will be ignored.
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