• Author : Campus TAC Solutions

 
 

How to Collect Arista AP/Sensor Debug Logs

Introduction This document provides the steps to fetch debug logs from Arista devices. These logs are required by the Arista WiFi TAC team at the time of troubleshooting.You can download and save a debug log for future reference. The debug logs are available in .tgz format. There are multiple methods to fetch AP/Sensor debug logs: Via the UI of CloudVision WiFi (CVW) or Wireless Manager (WM). This requires the AP/Sensor and WM to be on software version 7.3 or above. Via the config CLI of the Arista AP/Sensor. Prerequisites Access to CVW/WM UI, if the logs are to be obtained...
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How to Configure an SSID on Arista APs using Wireless Manager

Introduction This document focuses on the basic prerequisites and minimum configuration required for configuring an Arista device as an AP.  Prerequisites Administrative access to the Wireless Manager UI. Access Point should be connected to the network and also active on the Wireless Manger. If you do not see the Access Point active on the server, please refer to Troubleshoot AP Server connectivity. Solution The Arista AP does not have a UI of its own, so it must be configured via Wireless Manager. There are two aspects that control the configuration of an AP via Wireless Manager.   SSID Profile Device...
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Troubleshooting RADIUS Authentication/Authorization Issues

Introduction Arista Access Points offer several authentication methods for client connectivity, including the use of external authentication servers to support WPA2-Enterprise. This article outlines Dashboard configuration to use a RADIUS server for WPA2-Enterprise authentication, RADIUS server requirements and basic troubleshooting of RADIUS authentication. Prerequisites All Arista APs must be added as RADIUS clients on the RADIUS server. It is recommended that a static IP assignment or a DHCP fixed IP assignment should be used on the APs. Corresponding user authentication policies must be in place on the RADIUS server. Feature Description WPA2-Enterprise with 802.1x authentication can be used to authenticate...
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Dynamic VLAN Support Using RADIUS and Google Integration

Introduction Dynamic VLAN assignment helps you to quickly on-board a new device by allowing it to connect to a single SSID irrespective of the VLAN it has access to. Users can get access to their respective VLANs by connecting to a single corporate SSID. With dynamic VLAN assignment RADIUS server maps these users to their respective VLANs at the back end. The APs need to be connected to a trunk port that carries all the VLANs. There are two methods to assign Dynamic VLANs: RADIUS Google OU Solution RADIUS Based Assignment To achieve this, the following tasks must be performed:...
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How to Troubleshoot Low Throughput Issues on a Wireless Network

Introduction Data Rate is not the same as the actual Throughput achieved for a wireless network. The term Data Rate usually specifies the theoretical bit transfer rate of a particular implementation of Radio Frequency (RF) transmission. Whereas, Throughput is the actual amount of data per second that can be pushed across the link. Some spreading technologies are more effective than others, so the throughput will vary. 802.11 RF medium is a shared medium, meaning that in any discussion about throughput, it should be thought of as aggregate throughput. For example, if the data rate is 54 Mbps, because of CSMA/CA...
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How to Troubleshoot Low Throughput Issues on a Wireless Network

Introduction Data Rate is not the same as the actual Throughput achieved for a wireless network. The term Data Rate usually specifies the theoretical bit transfer rate of a particular implementation of Radio Frequency (RF) transmission. Whereas, Throughput is the actual amount of data per second that can be pushed across the link. Some spreading technologies are more effective than others, so the throughput will vary. 802.11 RF medium is a shared medium, meaning that in any discussion about throughput, it should be thought of as aggregate throughput. For example, if the data rate is 54 Mbps, because of CSMA/CA...
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How to Enable Automatic Packet Capture

Introduction CloudVision WiFi can automatically capture packet traces when an AP detects a connectivity failure. The captured packet traces can be accessed and downloaded from the CloudVision WiFi GUI under Connection Logs. Use case This feature is useful for troubleshooting random client connectivity issues that last for a short duration and hence make it difficult for the administrator to capture the trace. For example incorrect password, DHCP and DNS issues Prerequisites Administrator or higher access to CloudVision WiFi/Wireless Manager. Solution On CloudVision WiFi, navigate to Troubleshoot > Packet trace > Auto Packet Trace Click on Auto Packet Trace and select...
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How to Enable Application Firewall on Arista Access Points

Introduction Arista Access Points include an Application Firewall feature, which allows you to define firewall rules at application level/Layer 7. This feature can be useful in corporate environments where the requirement is to either allow or block certain applications. The applications that the Arista APs are able to recognize can be broadly classified into the following categories. Messaging Proxy File Transfer Networking Web Services Remote Access VPN and Tunneling Database Network Monitoring Collaboration Games Streaming Media Streaming Media- Messaging Mail Social Networking Prerequisites Administrative access to CloudVision WiFi (CVW) / Wireless Manager (WM). Application Visibility should be enabled on the...
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How to Configure Alerts in CloudVision WiFi

Introduction This article will give you a brief idea about configuring Alerts in CloudVision WiFi. An alert provides a means to notify network admins of network events that need their attention. Alerts can be configured at individual locations in the hierarchy. If an alert is configured at the parent location, the same alert configuration will be inherited by the child location unless the administrator creates a different alert configuration at the child location. Prerequisites Administrator access to Wireless Manager and CloudVision WiFi Wireless Manager should be running version 8.6.0 or higher and CloudVision WiFi should be on version 2.3 or...
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How to Install CloudVision WiFi plugin for On-Premises Wireless Manager

Introduction CloudVision WiFi is extremely useful in troubleshooting WiFi client connectivity or network related issues. It is available as a service to Arista Cognitive WiFi Cloud customers, and can also be configured as a plugin for Wireless Manager in an On-Premises environment. Prerequisites Wireless Manager (WM) must be upgraded to version 8.5.1 or above Administrator must download CloudVision WiFi (CVW) plugin file from the WiFi Customer Portal. Release Notes will include information on WM and CVW compatibility. CVW plugin bundle must be hosted at a location from where it can be downloaded on WM, using one of HTTP, FTP, SFTP...
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Troubleshooting On-premises CloudVision WiFi

Introduction CloudVision WiFi service was originally available only as a service on the Arista Cognitive WiFi Cloud. From Wireless Manager version 8.5.1, an administrator can now install CloudVision WiFi for an on-premise Wireless Manager server. This document lists the steps to troubleshoot issues with the CloudVision WiFi plugin. Use Case This article is useful to troubleshoot scenarios where the hyperlink to launch CloudVision WiFi from Wireless Manager is not displayed. Prerequisites Wireless Manager (WM) must be running software version 8.5.1 or higher The administrator will have to download and install the CloudVision WiFi (CVW) plugin. Solution Setup Follow the steps...
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Troubleshooting On-premises CloudVision WiFi

Introduction CloudVision WiFi service was originally available only as a service on the Arista Cognitive WiFi Cloud. From Wireless Manager version 8.5.1, an administrator can now install CloudVision WiFi for an on-premise Wireless Manager server. This document lists the steps to troubleshoot issues with the CloudVision WiFi plugin. Use Case This article is useful to troubleshoot scenarios where the hyperlink to launch CloudVision WiFi from Wireless Manager is not displayed. Prerequisites Wireless Manager (WM) must be running software version 8.5.1 or higher The administrator will have to download and install the CloudVision WiFi (CVW) plugin. Solution Setup Follow the steps...
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TCP/UDP Ports used by Arista WiFi Products

Introduction This article explains the network ports, and the purpose for each, that need to be allowed in an environment where Arista WiFi products are deployment. A network port is a process-specific or an application-specific software construct serving as a communication endpoint, which is used by the Transport Layer protocols of Internet Protocol suite, such as User Diagram Protocol (UDP) and Transmission Control Protocol (TCP). Solution Here are the TCP Ports that need to be allowed in your network. Port Purpose TCP 21 File upload/download. e.g. db backup. TCP 22 Remote CLI access over SSH and file upload/download. TCP 25...
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Troubleshooting WiFi Throughput Issues with iPerf3 on Arista APs

Introduction When we observe low throughput in the network it is important to understand whether the issue lies on the WiFi or the wired side of the network. The method to achieve this is to perform an iPerf test and compare results. This utility is present on the Arista AP which acts as an iPerf server, eliminating the need for a second client connected to the WiFi network. Online speed tests are good for quick results; however, they are not ideal for troubleshooting as these speed tests are also dependent on factors outside the LAN/WLAN. Prerequisites config shell CLI access...
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Troubleshooting WiFi Throughput Issues with iPerf3 on Arista APs

Introduction When we observe low throughput in the network it is important to understand whether the issue lies on the WiFi or the wired side of the network. The method to achieve this is to perform an iPerf test and compare results. This utility is present on the Arista AP which acts as an iPerf server, eliminating the need for a second client connected to the WiFi network. Online speed tests are good for quick results; however, they are not ideal for troubleshooting as these speed tests are also dependent on factors outside the LAN/WLAN. Prerequisites config shell CLI access...
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How Frequently is Data Updated on CloudVision WiFi?

Introduction The article lists the different modules and frequency at which CloudVision WiFi updates its UI by fetching data from Wireless Manager. Solution The Wireless Manager collects all data and stores it in its database. CloudVision WiFi polls this data from the Wireless Manager database periodically and presents it using an internal webserver. There are different counters and charts across different modules on CloudVision WiFi which have their own polling intervals, default duration filter and granularity for which data is being shown. Modules Counters or Charts Default Filter Duration Granularity Polling Interval All Pages AP counters Current 2 minutes Clients...
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CloudVision WiFi and APIs

Introduction The article describes a few examples of how CloudVision WiFi uses APIs to interface with Wireless Manager. Prerequisites Administrator or higher access to the Wireless Manager and API Keys Solution CloudVision WiFi (CVW) does not store any WiFi data or configuration. Instead, the Wireless Manager (WM) server collects all the data and stores it in its database. CVW polls the WM database periodically and represents it on its own UI using an internal web server. So, how does CVW fetch this data from the WM database? API  Samples Below are few  examples of the APIs that CVW uses to...
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CloudVision WiFi and APIs

Introduction The article describes a few examples of how CloudVision WiFi uses APIs to interface with Wireless Manager. Prerequisites Administrator or higher access to the Wireless Manager and API Keys Solution CloudVision WiFi (CVW) does not store any WiFi data or configuration. Instead, the Wireless Manager (WM) server collects all the data and stores it in its database. CVW polls the WM database periodically and represents it on its own UI using an internal web server. So, how does CVW fetch this data from the WM database? API  Samples Below are few  examples of the APIs that CVW uses to...
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How to Work with Groups on CloudVision WiFi

Introduction Groups provide a network administrator the flexibility to apply custom configurations to APs across locations in CloudVision WiFi, regardless of the default templates configured at those individual locations. In this article we will walk through some common operations using Groups. Prerequisites Superuser or Administrator access to CloudVision WiFi (CVW). CloudVision WiFi version 2.4 or higher. Wireless Manager (WM) version 8.7 or higher. Solution Creating Groups A Group can be created in any of the following ways in CVW: Navigate to System > Navigator > Folder > Right click on a folder > Add Group Note: Groups cannot be created...
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Live Client Debugging on CloudVision WiFi

Introduction This article is step-by-step guide to collect client connectivity logs via CloudVision WiFi, using Live Client Debugging. This feature is similar to the Connection Logs on Wireless Manager. Live Client Debugging is useful to isolate the reason for WiFi client connectivity problems in real-time. These logs show the exchange between AP and the client and can capture issues with authentication, authorization, IP address assignment, etc. Prerequisites Administrative access to CloudVision WiFi. 802.11ac AP platform must be connected and active at the location where debugging will be performed. Solution Access CloudVision WiFi from the Launchpad and navigate to Monitor >...
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