Cisco Systems 5 manual Client-Server Network Responses, Packet as observed at NAM probing point

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.

The Client-Server Application Transaction window displays when you click Analyze > Response Time

>Detailed Views > Client-Server Application Transactions. You can also view the TopN Chart to view the most active network.

Table 3-12 Client-Server Application Transactions Window

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
Client	Host address of the client.
Application	Application being used by server
Number of Transactions	Total number of transactions observed during the monitoring interval
Average Transaction Time	Average time (ms) elapsed from the start of a client request to the
(ms)	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	Amount of time it takes a server to send the initial response to a client
Time (ms)	request as seen by the NAM.
Average Data Transmission	Elapsed time from the first server-response packet to the last
Time (ms)	server-response packet, excluding retransmission time.
Average Retransmission	Average time to retransmit lost packets per transaction
Time (ms)
Client ACK Round Trip Time	Average network time for the client to acknowledge (ACK) a server data
(ms)	packet as observed at NAM probing point

Client-Server Network Responses

The Client-Server Network Responses window shows information about network connectivity (also known as network flight time) between servers and clients.

	User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
3-28	OL-22617-01