Finisar Surveyor manual Table A-2. Resource Use of Buffers, Resource Buffer Usage

Surveyor

User’s Guide

	Table A-2. Resource Use of Buffers
Resource	Buffer Usage
THGm (Ten/Hundred/	THGm is a high speed network analyzer card with a single on-board
Gigabit module)	buffer. THGm supports full line-speed capture or for RJ45 10/100 Mbps
	Ethernet or Gigabit Ethernet. Filtering and all other Surveyor features are
	supported on THGm modules.
	The entire THGm buffer can be allocated for capture, monitor, or transmit
	functions.
	There is little demand for system resources, regardless of the number of
	cards being controlled. Real-time functions introduce some system
	resource dependency: the need to copy periodic real-time monitor, analy-
	sis, and/or protocol decode updates to Surveyor, and optionally to copy
	the real-time buffer to disk.
Portable Surveyor 10/	With the Portable Surveyor 10/100 Ethernet Analyzer Card, both buffers
100 Ethernet Ana-	are implemented in software, thus requiring system resources. To the
lyzer Card	extent that a system can keep up with traffic captured by an NDIS card, all
	LAN traffic will be copied to Surveyor and filtered, sliced if necessary, then
	routed to the capture buffer, real-time buffer, or both if desired. System
	resource demands increase with the complexity of analysis and monitoring
	tasks, and very much with the number of interfaces Surveyor is controlling.
	All Surveyor real-time functions are available.
	Simultaneous capture and transmit is not supported.
NDIS	When Surveyor uses standard Ethernet adapter cards, both buffers are
	implemented in software, thus requiring system resources. To the extent
	that a system can keep up with traffic captured by an NDIS card, all LAN
	traffic will be copied to Surveyor and filtered, sliced if necessary, then
	routed to the capture buffer, real-time buffer, or both if desired. System
	resource demands increase with the complexity of analysis and monitoring
	configured, and very much by the number of NDIS interfaces Surveyor is
	controlling. All Surveyor real-time functions will be available, excluding any
	MAC error counters which are not implemented on the card.

A-2