Overview

Data Analyzer Overview

Only one copy of the capture daemon runs in each HP 9000 system. It handles all analyzer sessions. The control of these sessions comes from one or more invocations of the Display program. The pdisplay program is designed to work on any HP-UX TTY device. Several copies of the pdisplay program can independently control several analyzer sessions simultaneously, or one pdisplay program may control multiple sessions.

The pcapture program can monitor all traffic on a particular X.25 link, or it can selectively monitor only traffic belonging to certain Virtual Circuits (VCs) on a link. The VCs of interest are identified by their Logical Channel Number (LCN); up to six filter LCNs may be specified for each X.25 analyzer session. By using this filter option, the size of the capture file can be minimized.

The pdisplay program also provides a filtering mechanism to select events from the capture file by LCN. Both these filtering mechanisms are independent. The pdisplay program also provides many options for displaying the captured X.25 or ISDN traffic (see “display” on page 27 for a detailed description of the display command).

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Chapter 1