Cisco Systems NAM, 5 manual Server Network Responses

Chapter 3 Monitoring and Analysis

Response Time

Note NAM uses the TCP three-way handshake to calculate network delay. If there are no new TCP connections during the polling interval, the NAM GUI displays a dash (-) for the delay value indicating there is no delay data for that interval.

Table 3-9, Server Application Transactions Metrics, provides definitions of each field of the Server Application Transactions window.

Table 3-9 Server Application Transactions Metrics

Field	Description
Client Site	Name of the client site.
Server Site	Name of the server site.
Data Source	Name of the data source
VLAN	VLAN
Server	Name or IP address of the server
Application	Application currently running
Number of Clients	Total number of clients
Number of Transactions	Total number of transactions
Average Transaction Time (ms)	Average time (ms) elapsed from the start of a client request to the
	completion of server response. Transaction times might vary
	significantly depending upon application types. Relative thresholds are
	useful in this situation.
	Transaction time is a key indicator when detecting application
	performance anomalies.
Average Server Response Time	Amount of time it takes a server to send the initial response to a client
(ms)	request as seen by the NAM.
Average Data Transfer Time	Average elapsed time from the first server-response packet to the last
(ms)	server-response packet, excluding retransmission time. Data transfer
	time is always measured in the server-to-client direction and can be
	used to detect problems for a particular type of transaction of an
	application.
Average Retransmission Time	Average time to retransmit lost packets, per transaction.
(ms)
Client ACK Round Trip Time	Average round trip time for the client to acknowledge (ACK) a server
(ms)	TCP packet.

Server Network Responses

The Server Network Responses window shows the network connectivity and responsiveness between the server and the switch. It is located at Analyze > Response Time > Detailed Views > Server Network Responses.

	User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
OL-22617-01		3-25