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Update: This post has been updated, please see Scripting SSH to network devices.

Automation, software defined networks, and network programmability are hot topics in the world of networking. Numerous platforms and architectures exist to facilitate programmatic interaction with the network, from direct API access to individual components, up through the various layers of abstraction offered by numerous management platforms and software controllers.

Today we will be looking at interacting with Cisco’s wireless controller directly using Python. Continue reading “Scripting the WLC”

The previous instalment of our wireless QoS series served as a brief introduction into the various wireless standards, in this post we go a little deeper into the transmission mechanisms required to implement wireless QoS features.

Continue reading “Wireless QoS, channel access”

Wireless Multicast with Cisco WLC

Recently the question of multicast over Wi-Fi came up again at the office, so it was time to set it up and see what happens. All the configuration and test results are documented below.

The basic lab setup.

First, we need to remember that sending multicast to the AP requires multicast communication between WLC and AP. This means the LAN needs to be multicast enabled, otherwise this will just not work. This is less of an issue in a small lab such as this as everything can be on the same VLAN, but on larger networks this is unlikely to be the case.

Once the LAN is multicast ready we can move on to WLC configuration, and we see that there is actually very little of it.

Continue reading “The multicast question”