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Understanding hardware acceleration
Chapter 15: Gen3 Capture Card 329
Next, you should change the monitored network adapter (page 329) of a probe
instance to use the virtual adapter.
How to change the monitored network adapter
If your probe has multiple network cards in it, you can choose which card you
want to monitor.
This section applies to all probes and all versions of them, including Single Probe,
Multi Probe, and Expert Probe on VIAVI or third party hardware.
Note: If you have a network card in your system, but it is not being seen
or recognized by Observer, follow the instructions in No network adapter
available (page 354) .
Tip!
If you are seeing only broadcast traffic, you do not have the correct
network card selected or you do not have your switch port configured
correctly as a SPAN/mirror port. Change the network adapter you are
monitoring or configure the SPAN/mirror port.
♦
When choosing the monitored adapter from within Observer for all probe
versions:
1.
In the probes list, select the probe instance.
2. Choose .
The
Select Network Adapter window appears.
3. Select the network adapter you want to monitor, and click Select .
♦
When choosing the monitored adapter on the probe for Multi Probe and
Expert Probe:
1. Click Adapters and Redirection .
2. Select your probe instance and click Configure Adapter/Redirection .
The Edit Probe Instance window appears.
3. In the Selected Network Adapter area, change the network card you are
monitoring.
The probe instance is now using the newly selected adapter.
Understanding hardware acceleration
Hardware acceleration optimizes a GigaStor active instance for its fastest possible
operating speed by using the Gen3 capture card instead of the system CPU.
Hardware acceleration significantly increases the performance of an active
instance than without it. By using hardware acceleration with the Gen3 capture
card, the fastest capture rates and post-capture analysis can be achieved in
your GigaStor hardware or probe appliance. Turning off hardware acceleration
is not recommended, as packet capture performance will be greatly degraded
because this work is offloaded from Gen3 capture card to the CPU instead where
it competes for resources.
Do not turn off hardware acceleration unless you have a specific need to.
The feature provides performance benefits only; there are only advantages to