How to assign physical ports to probe instances
By default, the active instance monitors network traffic from every physical port of your capture card—all the traffic is aggregated. If you want to instead “divide” your monitored network traffic by physical ports, to help you monitor certain SFPs separately from others, then you can use virtual adapters to assign specific physical ports to probe instances.
Your hardware appliance must have one of the following:
Gen2 capture card
Gen3 capture card
For example, suppose you are deploying an 8-port Gen3 capture card as follows:
Ports 1-4 are monitoring a collection of trunked links
The remaining ports are each connected to the SPAN (or mirror) port on a switch
In this scenario, it makes sense for Observer to view ports 1-4, for example, as a single stream of network traffic and to separate each of the four remaining ports into separate data streams. Virtual adapters are a convenient way to accomplish this separation or aggregation in real time, rather than depending on filters to sort through the traffic post-capture.
These are the general steps for assigning physical ports to a probe instance:
Create a virtual adapter (or have one already).
Assign physical ports to this virtual adapter.
Set a probe instance to use this virtual adapter as its NIC.
Tip! As a general reminder, you risk severe performance loss when using more than one active instance. These instructions do not create multiple active instances.
To assign physical ports to a specific probe instance:
1. In Observer, right-click the Gen3 capture card-equipped probe instance from the probe list, and click Probe or Device Properties.
A Gen3 capture card-equipped probe instance shows (Gigabit) or similar after the name.
2. Click the Virtual Adapters tab.
Figure 102: Virtual Adapters tab
3. Select a virtual adapter, and click Edit Adapter.
4. Select physical ports from the Available Ports list, and click Add.
You can select more than one physical port by holding CTRL as you click.
5. Click OK to return to the Virtual Adapters window.
6. Click OK to save the virtual adapter and close the Virtual Adapters window.
Changes to virtual adapters are not be saved until OK is clicked in the Virtual Adapters window.
The virtual adapter appears in the list of available network adapters when creating a probe instance. This allows you to assign the virtual adapter to a specific probe instance, among other benefits.
Next, you should change the monitored network adapter of a probe instance to use the virtual adapter.