Finisar Surveyor manual Custom Counters, Error Counters

Surveyor

User’s Guide

The following packet counters are supported:

•Total Frames

•Broadcast Frames

•Multicast Frames

•Unicast Frames

•Error Frames

•Total Bytes Received

•A breakdown of the total number of error frames is provided by the error counters.

Custom Counters

Custom counters are user-defined counters established in capture filters. When a certain condition in the filter is satisfied, counter 1, 2, or 3 can be incremented as a result of one of the actions taken by the capture filter. Custom counters are available in capture mode only.

Custom counters are incremented in the MAC Statistics view as packets are captured. By setting counters, you can visually see in the MAC Statistics view how many frames of a certain type have been captured.

Error Counters

During receive, error events are counted as they occur. The MAC statistics view and the table associated with the Utilization/Errors chart displays the receive error counters.

Table 12-2 contains an alphabetical list, with descriptions, of Surveyor’s Ethernet error counters.

.

Table 12-2. Alphabetical List and Descriptions of Ethernet Error Counters

Counter Type	Description
Collision Indication	The sum of CRC/Align and Fragments error counters, as these condi-
	tions are usually caused by collisions. See the CRC/Align and Frag-
	ments counters described below.
CRC/Align	The total number of packets received that had a length between 64
	and 1518 octets, inclusive, but had either a bad FCS with an integral
	number of octets (FCS/CRC Error) or a bad FCS with a non-integral
	number of octets (Alignment Error).

12-2