Finisar Surveyor User Manual
7-1
Chapter 7
7
Capture and Display Filters
For most data analysis operations, you’ll want to look at only a subset of all data.
Filters allow you to select and count data in just about any way you can imagine.
Capture filters allow you to capture a subset of the network data. Display filters
Capture filters allow you to capture a subset of the network data. Display filters
allow you to view a subset of the data you have already captured. They can be used
to refine your view of captured information. For example, you might choose to cap-
ture all packets sent/received by a specific IP network station. Later, you might
decide you want to look at the data for specific types of packets that are flowing
through the station. A display filter allows you to view this subset of captured data.
Surveyor uses a layered approach to developing filters. If you want a simple filter,
Surveyor uses a layered approach to developing filters. If you want a simple filter,
all filter options can be specified from a single window. However, if you need to
create an advanced filter with multiple states and searches to refine exactly what
you’re looking for, Surveyor supports a complete filtering language.
Example filters are provided to give you an idea of the types of filters that can be
Example filters are provided to give you an idea of the types of filters that can be
created. This section describes both Capture and Display Filters; the minor differ-
ences are noted in the text.
Getting Started with the Filter Interface
For most users, filters can be created and applied from a single window. The over-
view below describes a simple way to get started with the interface.
1. Select the resource you want to filter from the Resource Browser.
1. Select the resource you want to filter from the Resource Browser.
2. Press the
Detail View
button.
3. Press the
Create/Modify Capture Filter
button to bring up the
Filter Design
window.
4. Click on a pre-defined filter template from the
Available Filter Templates
box.
The data pattern for the filter template you have selected will display in the
Current Filter Template Display
area. Suggestion: Try HTTP to collect HTTP
traffic only.