Cisco 9800 best practices

The Catalyst Wireless solution is built on three main pillars of network excellence: Resiliency, Security, Intelligence:. This means that, although most AireOS features are retained, there might be changes in the way you configure certain functionalities.

This document covers the best practices recommended for configuring a typical Cisco Catalyst Series wireless infrastructure. The objective is to provide common settings that you can apply to most wireless network implementations. But not all networks are the same. Therefore, some of the tips might not be applicable to your installation.

Always verify them before you perform any changes on a live network. The first part of the document focuses on some important configuration and design concepts of the Catalyst Wireless Controller.

These will be useful to understand the best practices presented in the rest of the document. The guide is a list of recommended configurations organized in sections: General, Network, Radio Frequency RFSecurity settings and more. When available, these settings are shown using the new Graphical User Interface GUI of the Catalystas it has been greatly improved and should be easy to navigate. In the next popup window select Show Diff.

This will open up another window where you can compare the existing and new configuration. The commands that are different are highlighted: green indicates new commands, orange modified commands, and red deleted commands.

Below is an example for a new rogue management setting. Each recommended setting will be highlighted if there are some known restrictions or if it applies to a specific release of code. The differences with AireOS will also be underlined. The information in this document is derived from tests on devices in specific lab environments. All of the devices used in this document started with a cleared default configuration. If your network is live, make sure that you understand the potential impact of any command.

More information can be found here. The information in this document is based on the following software and hardware versions:. Cisco Catalyst Series new configuration model. A quick recap first.

The Cisco Catalyst Series new configuration model is based on two constructs: profiles and tags. Profiles group a set of features and functionalities, and tags allow you to assign these features and functionalities to APs. There are five types of profiles:.

The tag allows you to bind the settings in the profiles to an access point. There are three types of tags:. An access point is always assigned three tags, one for each type. If a tag is not explicitly defined, the AP will get the default policy, site, or RF tag.

The C configuration model allows the customer to have much more flexibility in tweaking the configuration to fit a specific wireless deployment. With the new configuration model, the TCP MSS Adjust value is set at the AP Join profile level, so the customer can evaluate the transport network at each site and decide the value that is best for a specific group of APs.Hi guys, I've been trying to get the new Catalyst controller virtual to work and trying to learn the basics of it also.

However I'd like to ask about the best practices in setting up the thing and if there are clues in the running config of a physical appliance that helps. The thing is about the interfaces: - Do you actually need to define 3 interfaces in vmware? And how is this on physical appliances?

It did grab the mac addresses both ways as I could see in the ARP tables of devices on both ends. I couldn't use https to the controller anymore and had to do no http-secure server to regain GUI access on port However I skipped the day0 and went full cli from the start.

I even got an AP connected. However without licensing on this machine I won't get it to work completely but I got very far. I also noticed you could manage the appliance fully using the wireless mgmt interface. So once again, best practices on a virtual controller. I am running into some of the same issues as you, though I only have a GigabitEthernet1 "physical" interface.

We have two controllers on order and I am also curious if I will run into this on the physical hardware. I am confused about interfaces, too. We have two CL in a cluster running on kvm.

cisco 9800 best practices

One interface serves for management access, another is trunk with the wireless management vlan and the third is used for HA. I played around and set the management interface as trustpoint. Access Points are able to join. As we do not switch centrally we do not need other Vlans than the one for management on the Controllers.

What is the reason for adding a seperate wireless management interface? So I'll give it a try with only one interface serving as trustpoint for access points and for device management. Buy or Renew. Find A Community. Cisco Community.

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You must be signed in to add attachments.This document introduces the new configuration model for the Cisco Catalyst Wireless Controller and provides general guidelines for its deployment. The purpose of this document is to:. Introduction to the Best-Practice driven configuration model. Cisco Catalyst Wireless Controller configuration data model is based on design principles of reusability, simplified provisioning, enhanced flexibility and modularization to help manage networks as they scale and simplify management of dynamically changing business and IT requirements.

AP can be mapped to the tags either statically or as part of the rule engine that runs on the controller and comes into effect during the AP join process. Configuration objects are modularized as objects which helps in reusability of configuration.

In addition, a flat tag-based configuration model eliminates the complexities associated with inheritance and container-based grouping leading to a simpler and more flexible configuration that can ease change management. Profiles define the properties of the AP or associated clients. Profiles are reusable entities which can be used across tags. There are different kinds of profiles depending on the characteristic of the network they define.

These profiles are in turn part of a larger construct called a Tag, as defined in the previous section. The policy profile defines the network policies and the switching policies for a client with the exception of QoS which constitute the AP policies as well.

Policy profile is a reusable entity across tags. The switching policies define central switching or local switching attribute of a WLAN. The flex profile contains the remote site-specific parameters. By default, there exists two default RF Profiles one for One There are various type of tags, each associated to different profiles.

cisco 9800 best practices

No two types of Tags include profiles having common properties. This helps eliminate the precedence amongst the configuration entities to a large extent. Every Tag has a default that is created when the system boots up. Site tag constitutes of two profiles, the flex profile and the AP join profile.The intent of this post is to get your Catalyst CL online with a trunked network interface.

I will be writing another post to cover configuring WLANs, go over the new configuration model, and best practices. However, Cisco does not excel at developing OVA packages that work well in different environments. This has never been more true than it is with the The deployment process is wildly different between different versions of ESXi, or with vCenter. However, it is possible to successfully deploy the in several versions of ESXi, as well as vCenter. The process may differ with newer versions.

At the very least, I hope it gets more consistent between platforms. Please read this section carefully. At the very least, it will cause the controller to perform very poorly, because it will be constantly looping traffic in the background. By default, the Catalyst CL will deploy itself with 3 network interfaces. The purpose of each of these interfaces is as follows:.

Remember, the Catalyst is basically a switch with wireless capabilities. Having more than one of these interfaces on the same vSwitch is like plugging two switches together using multiple links without a port channel.

In my opinion, most deployments will not need Gigabit1 and some will not need Gigabit3. In our example, we will be deleting Gigabit1 and Gigabit3, and setting Gigabit2 as a trunked interface. Important note: If you are going to delete interfaces, you must do so before the VM is powered on for the first time. On the initial boot, a bunch of scripts are automatically executed, and they appear to map specific services to each interface. Just delete them before you power it on and save yourself the trouble.

Now you will see this Port Group in the list when you select the network for each interface during the OVA deployment.

Deploying and Configuring the Cisco Catalyst 9800-CL in VMware – a Detailed Guide

I am showing the process with ESXi 6. If you do, please reference the VMware Version Support section above. If you would like to be able to access the WLC console via a telnet client instead of the VMware consoleyou can follow these steps.

The OVA wizard is much more detailed and will pre-configure many of the settings in the In my opinion, this is both good and bad. You will need to make several changes to the command line syntax to make it appropriate for your environment. Also, this command structure is very specific.

Be sure to read the Networking section above, and delete the unnecessary interfaces before powering on the VM.

cisco 9800 best practices

Here is a script that you can paste into a freshly deployed Catalyst CL in order to give it an initial configuration. The items that need to be changed are italicized. I hope this helps get your controller online with a trunked network interface. I intend to write another post that covers the new configuration model, and how to configure WLANs, tags, profiles and policies.

In the meantime, here are a few quick tips for the main configuration of the Catalyst Description— Aironet IE is a Cisco proprietary attribute used by Cisco devices for better connectivity. It contains information, such as the access point name, load, number of associated clients, and so on sent out by the access point AP in the beacon and probe responses of the Cisco Catalyst Series Wireless Controller. The CCX software is licensed to manufacturers and vendors of third-party client devices.

The CCX code resident on these clients enables them to communicate wirelessly with Cisco APs and to support Cisco features that other client devices do not. The features are related to increased security, enhanced performance, fast roaming, and power management.

Aironet IE is optional for CCX based clients, however it can cause compatibility issues with some types of wireless clients. The recommendation is to enable for WGB and Cisco voice, but for general production network, it can be beneficial to disable Aironet IE after testing.

Management over wireless should be disabled for security reasons. Clicking Fix it Now disables management over wireless. If a device is configured with more than one crypto trustpoint which could be for a self-signed or identity certificateenter the following CLI command to use a specific trustpoint for HTTPS communication:. HTTPS chooses the trustpoint in the following order:.


Description—In dense production networks, controllers have been verified to function optimally with load balancing ON and window size set at 5 or higher. In practical, this means load balancing behavior is only enabled when, for example, a large group of people congregate in a conference room or open area meeting or class.

Load balancing is very useful to spread these users between various available APs in such scenarios. Load balancing should be enabled. For time sensitive application such as voice, it can cause roaming issues. Therefore, it is recommended to test before enabling load balancing on the Cisco Catalyst Series Wireless Controller. Clicking Restore Default enables load balancing on the Cisco Catalyst Series Wireless Controllerwhich may impact service at the time. The controller supports synchronization with NTP.

Description: Virtual gateway IP should be enabled. Clicking Fix it Now enables virtual gateway IP. Description—The controller in Cisco Catalyst series -enabled APs can determine the client type from the information received when a client device associates with the controller. This controller acts as the collector of the information, and either displays the information directly on the Cisco Catalyst Series Wireless Controller GUI dashboard or sends required data to the ISE optimally.

The controller should not be used as a router for wireless clients. For APs in local mode or local site-tagwe recommend that you limit the number of APs per site-tag to For example, if you have more than APs in a building, use two site-tags for the building.

Seamless and fast-roaming is supported across site-tags. You can configure more or less APs per site-tag, but the recommendation is not to exceed these numbers:. Description—WLAN should be using You can enable this from the linked WLAN page.

The default day 0 setting does not mandate configuring Description—When the client fails to authenticate, the controller excludes the client. The client cannot connect to the network until the exclusion timer expires or is manually overridden by the administrator.

Cisco Catalyst 9800 Series Configuration Best Practices

Client exclusion detects authentication attempts made by a single device. When the device exceeds a maximum number of failures, that MAC address is not allowed to associate any longer to the controller.

cisco 9800 best practices

When you click Fix itthe following components are enabled:. The valid values for exclusion-list timeout ranges between 0 and seconds.Asking for a review in person can be intimidating but it is often the most effective approach, so if the opportunity presents itself, seize it.

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Cisco Catalyst 9800 Wireless Controller Series Web UI Deployment Guide

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