Chapter 2 Setting Up The NAM Traffic Analyzer

Traffic

Table 2-11

WAAS Data Collection Points (continued)

 

 

 

Setting

 

Description

 

 

 

Server

 

This setting configures the WAE device to export the original (LAN side) TCP

 

 

flows from its servers to NAM for monitoring. To monitor this point, configure

 

 

a Server data source.

 

 

 

Passthrough

 

This setting configures the WAE device to export the TCP flows that are passed

 

 

through unoptimized.

 

 

 

You can also configure a data source to use Export Passthrough data. For more information about configuring WAAS data sources, see Editing WAAS Data Sources, page 2-34.

Monitoring Client Data Sources

By monitoring the TCP connections between the client and the WAE device (Client segment in Figure 2-3), you can measure the following ART metrics:

Total Response Time as experienced by the client

Total Transaction Time as experienced by the client

Bandwidth usage (bytes/packets) before optimization

Number of transactions and connections.

Network Time broken down into two segments: client-edge and edge-server

Monitoring WAN Data Sources

By monitoring the TCP connections between the edge and core WAE devices (Client WAN and Server WAN segments in Figure 2-3), you can measure the following:

Bandwidth usage (bytes/packets) after optimization

Network Time of the WAN segment

Monitoring Server Data Sources

By monitoring the TCP connections between the core WAE devices and the servers (Server segment in Figure 2-3), you can measure the following ART metrics:

Server Response Time (without proxy acceleration/caching server)

Network Time between the core WAE device and the servers

Note NAM measures Network Time by monitoring the TCP three-way handshake between the devices.

 

 

User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0

 

 

 

 

 

 

OL-22617-01

 

 

2-31

 

 

 

 

 

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Cisco Systems NAM, 5 manual Monitoring Client Data Sources, Monitoring WAN Data Sources, Monitoring Server Data Sources