• Tag : trace


How to Enable Automatic Packet Capture

Introduction CloudVision Wi-Fi can automatically capture packet traces when an AP detects a connectivity failure. The captured packet traces can be accessed and downloaded from the CloudVision Wi-Fi 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 Wi-Fi/Wireless Manager. Solution On CloudVision Wi-Fi, navigate to Troubleshoot > Packet trace > Auto Packet Trace Click on Auto Packet Trace and select...
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Why do I see Many ARP Packets Coming from Arista Sensors on My Network?

Introduction This article describes one of the techniques used by Arista Sensors to determine wired connectivity of the Access Points that are visible in the RF vicinity. This technique leverages ARP request packets sent by the sensor from its wired side MAC address on each VLAN. ARP request packets are sent to Layer 2 broadcast address. Prerequisites Arista WIPS Sensor and Wireshark How it Works The Arista Marker packets are formatted as gratuitous ARP Requests i.e., sensor requests resolution of its own IP address. The sensor injects the ARP marker packets on VLANs that it is monitoring and they remain...
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