Cisco Systems 5 manual Maximum Capture Session Sizes for NAM Platforms

Chapter 4 Capturing and Decoding Packet Data

Sessions

Table 4-3	Capture Settings Fields (continued)
Field		Description	Usage Notes
Storage Type:		Check to store captures in	Enter values for Memory Size for this capture. Enter a number from
Memory		memory	1 up to your platform maximum. If system memory is low, the actual
			session size allocated might be less than the number specified here.
			See Table 4-4for maximum session sizes for each NAM platform.
			The NAM Traffic Analyzer will grant less memory than requested if
			the available memory is less than requested.
			Check (if desired) Wrap when Full to enable continuous capture
			(when the session is full, older packet data is removed to make room
			for new incoming packets). If you do not check Wrap when Full, the
			capture will end when the amount of data reaches size of session.
Storage Type: File(s)		File Size (MB)	Enter a value for File Size (file size can be from 1 to 2 GB or up to 10
			GB for the NAM appliances). About 400MB of free disk space is
			reserved for working files. If available disk space is below 400 MB,
			you will not be able to start new capture-to-disk sessions. See
			Table 4-4,Maximum Capture Session Sizes for NAM Platforms.
		Number of Files	Enter a value for Number Of Files to use for continuous capture.
		Rotate Files	Check the Rotate Files check box to rotate files in continuous capture.
			Available only for remote storage or NAM 2200 Series appliances.
			See section Capture Data Storage, page 2-18, for information about
			configuring remote storage.
			The Rotate Files option can only be used with remote storage or the
			NAM 2200 Series appliance’s local disk. See the section Capture
			Data Storage, page 2-18, for information about configuring remote
			storage.
			If you choose the Rotate Files option, when you reach the highest
			number file, the earliest file is overwritten. For example, if you
			specify No. Files to 10, file CaptureA_1 is overwritten after the
			NAM writes capture data to file CaptureA_10. To determine the most
			recent capture, check each file’s time stamp.
		File Location	Choose a location from File Location. Local disk is the default, or
			choose a previously configured remote storage location. You can add
			(NFS and iSCSI) remote storage locations by going to
			Administration > System > Capture Data Storage.

Table 4-4lists the hardware platforms NAM 5.0supports and their maximum session size. This is the maximum capture memory buffer size for all capture sessions together, not individually.

Table 4-4 Maximum Capture Session Sizes for NAM Platforms

			Maximum Session
		NAM Platform	Size
		WS-SVC-NAM-1	125 MB
		WS-SVC-NAM-1 with memory upgrade (MEM-C6KNAM-2GB)	500 MB
		WS-SVC-NAM-1-250S	200 MB
	User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
4-6			OL-22617-01