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Customizing NetSight Element Manager 2-17
Overview of NetSight Element Manager
IP Address Autofill
As with community names, an IP address is required to add devices to, or modify existing
devices in, the central node database. (The Insert Device and Device Discover Properties
windows both have an IP address entry field.) The IP Address Autofill option allows you
to specify the network or subnet identifying octets (in dotted decimal IP format) you wish
to be entered by default in any required IP Address field (again, you can change the IP
address on a case-by-case basis).
To set the default IP Address Autofill prefix:
1. Click in the IP Address text field, and type in the network or subnet identifying
octets (in dotted decimal IP format) which you wish to use as a prefix.
Address Mask
An address mask is used to determine whether a given destination IP address (in this case,
that of managed devices) exists on the same network or subnetwork as a given source IP
address (in this case, that of yourNetSight Element Manager workstation). The Address
Mask field lets you set a default value which will be used when NetSight Element
Manager polls for IP devices during a Network Discovery.
The appropriate address mask depends upon your network configuration. If your network
contains subnets, entering the appropriate subnet mask in this field will identify the
network, subnet, and host portions of the IP addresses in the address range. For example,
on a Class B network containing an IP address of 132.177.118.24, a subnet mask of
255.255.255.0 would identify the first two octets (132.177) as the network portion of the
address, the third octet (118) as the subnet portion, and the final octet (24) as the host
portion.
If your network does not contain subnets, entering the appropriate network mask in this
field will identify the network portion of the IP addresses in the address range. For
example, on a Class B network containing an IP address of 132.177.118.24, a network
mask of 255.255.0.0 would identify the first two octets (132.177) as the network portion
of the address.
To set the default Address Mask:
1. Click in the Address Mask text field, and type in the network or subnet
identifying octets which you wish to use as the mask.
Polling Options
The Polling options (Figure 2-9) let you configure how NetSight Element Manager
contacts nodes in your database (and consequently how often their contact status is
refreshed in List View, Tree View, or Map View windows).