Users Guide

48 Configuring IT Assistant to Monitor Your Systems
Selecting An Appropriate Discovery Time-Out Value for the Network
Since Tom is monitoring remote systems across a WAN, time-out values may differ significantly between
local systems and those further removed. In this case, it is recommended that Tom determine and set an
appropriate time-out for the discovery of the systems located over the WAN.
In environments with long network latency times, such as global WANs, Tom may want to consider
increasing ping time-outs across the enterprise. He can determine the ping times of systems that exhibit
the greatest latency on the network by using the Too ls→ Troubleshooting Tool and selecting the Device
Connectivity tab. From there, Tom can test the connection of high-latency systems to see whether he
should increase specific ping times for better WAN performance.
Configuring Discovery Settings for the First Time in the Enterprise Network
Like Jane, if this is the first time IT Assistant has been launched since installation, Tom is presented with
a welcome screen indicating that IT Assistant has not yet been configured. The four basic steps of
configuration are listed:
Step 1: Discovery Configuration
Step 2: Inventory Configuration
Step 3: Status Polling
Step 4: Ranges
Clicking any of the steps will take him to the corresponding dialog box under the Discovery and
Monitoring menu bar in IT Assistant. Steps 1 through 3 are single-window dialog boxes; Step 4 is a
wizard-based procedure for defining discovery ranges.
Data Center
Servers 8
192.166.160.* dcp123/dcxprivall 100 59
Data Center
Servers 9
192.166.161.* dcp123/dcxprivall 50 128
Remote
Servers 1
10.9.72.* dcp123/dcxprivrem 50 5600
Remote
Servers 2
10.9.73.* dcp123/dcxprivrem 100 2400
Table 4-2. Example Subnet Ranges, IP Addresses, or Host Names and Corresponding Information for Data Center and
Remote Servers (continued)
System
Group Name
Include Subnet
Range
Exclude Hosts or
Subnet Range
Public/Private
Community Names
Number of
Servers on
Subnet
Longest Ping
Response Time
Observed on
Subnet