Viavi Apex Enterprise G3-APEX-ENT-32T, Руководство пользователя

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Understanding hardware acceleration
330 GigaStor (23 Feb 2018) — Archive/Non-authoritative version
gain by using hardware acceleration. However, two situations require that you
disable hardware acceleration on the active instance:
1. If you need the GigaStor active instance to filter network traffic in real time
using a “deeper” set of filters than the following:
MAC/IP Address
MPLS
Port
VLAN Tag (802.1Q)
VNTag
It is a best practice to use the supported broad filters (page 333) listed or no
filters when capturing real-time network traffic with the GigaStor active
instance. As soon as the network traffic is written to the RAID array, it
becomes available for data mining and more complex filters can be used. If
unwanted traffic is entering your GigaStor system, it is instead recommended
that the connected switches, SPAN, or aggregator switch be configured to
discard those packets before they reach the Gen3 capture card.
2. If you have an eight (8) port Gen3 capture card and intend to create one
virtual adapter for each physical port, then hardware acceleration must be
disabled. This is because only four virtual adapters can be created while
hardware acceleration is enabled. In practice, this is not a typical setup, and
better use of your hardware is gained by leaving hardware acceleration
enabled than separating more than four ports of traffic.
Tip! You can verify if hardware acceleration is enabled by viewing the
capture card properties (page 321) .
The active instance is the only probe instance that can be configured for
hardware acceleration. This means you cannot configure a passive instance
to use hardware acceleration—the option simply does not exist—but passive
instances can always be created from your hardware-accelerated active instance.
Each GigaStor appliance with a Gen3 capture card is configured to use the card
for the active instance, so the best capture performance is ready out-of-the-box.
Hardware acceleration does not affect or speed-up statistics-based
features like Network Trending. Statistic-based features behave exactly the
same whether hardware acceleration is enabled or disabled, and this is because
hardware acceleration affects packet capture modes only.
Note: When allocating memory for any probe instance with the VIAVI
capture card as the chosen adapter, at least 80 MB of memory must be
allocated to both the capture buffer and statistics queue buffers. Failure to
do so will result in the inability to capture data. This must also be followed
for any Gen3 capture card that has hardware acceleration enabled.
How to enable hardware acceleration
Hardware acceleration must be turned on for certain features in Observer and the
GigaStor Control Panel to become usable. Hardware acceleration is exclusive to
the Gen3 capture card.