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Instead of the ingress/egress network interface, it is possible to | Instead of the ingress/egress network interface, it is possible to | ||
report the *Virtual Link Group* of the flow by enabling the | report the *Virtual Link Group* of the flow by enabling the | ||
corresponding option in the | corresponding option in the IPFIX settings`. | ||
<br> | <br> | ||
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<br> | <br> | ||
The | The Allegro Network Multimeter is able to measure the throughput of | ||
interfaces on a millisecond basis to identify micro bursts in network | interfaces on a millisecond basis to identify micro bursts in network | ||
connections. If the Allegro-specific interface statistics is enabled | connections. If the Allegro-specific interface statistics is enabled | ||
in the :ref:`ipfix_settings`, regular messages are sent containing the | in the :ref:`ipfix_settings`, regular messages are sent containing the | ||
number of packets and bytes within a configurable time interval. The | number of packets and bytes within a configurable time interval. The | ||
Allegro Network Multimeter can measure time intervals as small as | |||
one millisecond, the exact value can be chosen in the | one millisecond, the exact value can be chosen in the | ||
Interface and MAC throughput configuration section. | |||
The message format is described as follows. | The message format is described as follows. | ||
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| observationTimeMilliseconds = ... | | observationTimeMilliseconds = ... | ||
*message type 5 is the "interface throughput update" message. | |||
*the ingress interface describes the corresponding network interface on | |||
which the packets have been receveived. The value corresponds to the | which the packets have been receveived. The value corresponds to the | ||
interface ID in the interface stats web page. | interface ID in the interface stats web page. | ||
*the packet delta count describes the number of packets within the specificied | |||
interval. | interval. | ||
*the octet delta count describes the number of bytes of layer 2 within the | |||
specificied interval. | specificied interval. | ||
*the update interval describes the duration of the reported interval in | |||
milliseconds. | milliseconds. | ||
*the ovservation timestamp describes the UTC timestamp of the reported interval | |||
in milliseconds. | in milliseconds. | ||
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