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Introduction: Difference between revisions
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2. Allegro Network Multimeter facilitates the use of a so called Packet Ring Buffer. The packet ring buffer (see [[Storage]]) is a HDD/SSD storage device where packet data can be stored "permanently". This allows Allegro Network Multimeter users to retroactively extract packets of interest from the web-interface. In depth analysis of such extracted pcap file can be done either with Allegro's built in Webshark or with Wireshark. | 2. Allegro Network Multimeter facilitates the use of a so called Packet Ring Buffer. The packet ring buffer (see [[Storage]]) is a HDD/SSD storage device where packet data can be stored "permanently". This allows Allegro Network Multimeter users to retroactively extract packets of interest from the web-interface. In depth analysis of such extracted pcap file can be done either with Allegro's built in Webshark or with Wireshark. | ||
The use of a packet ring buffer also allows to easily replay network traffic (or parts thereof) that was captured to the storage device. So for instance, an engineer could send out a portable Allegro Network Multimeter to a remote site/customer, have the Allegro collect network traffic for multiple days and replay & analyze this data afterwards. Packet broker type filters can be set for the In-Memory Database and the packet ring buffer. | The use of a packet ring buffer also allows to easily replay network traffic (or parts thereof) that was captured to the storage device. So for instance, an engineer could send out a portable Allegro Network Multimeter to a remote site/customer, have the Allegro Network Multimeter collect network traffic for multiple days and replay & analyze this data afterwards. Packet broker type filters can be set for the In-Memory Database and the packet ring buffer. | ||
===Dynamic memory utilization=== | ===Dynamic memory utilization=== | ||
The Allegro Network Multimeter dynamically adjusts its memory usage to the traffic it sees. This means that in smaller networks with few IPs and connections, the analyzer can store historical data longer than in larger networks with far more IP- and connection information. | The Allegro Network Multimeter dynamically adjusts its memory usage to the traffic it sees. This means that in smaller networks with few IPs and connections, the analyzer can store historical data longer than in larger networks with far more IP- and connection information. | ||