June 2017
Intermediate to advanced
446 pages
10h 10m
English
Content preview from Mastering Python Networking
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Ryu controller code
Most of us network engineers take routing for granted after a while. After all, it is easy to just assign the default gateway for devices, turn on the routing protocol on routers, advertise IP blocks, and call it a day. However, as we have seen in the switch configuration, OpenFlow gives you very granular control over network operations. With this control, you have to tell the devices what to do with your code: very little is handled on your behalf. So let's take a step back and think about the network operations in our two-router topology when h1 is trying to ping h2, such as when issuing the command h1 ping -c 2 h2:
- The h1 host with IP address 192.168.1.10/24 knows that the destination 192.168.2.10 is not on its own ...
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