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Discovering Nodes
3-22 Using the IP or Host Locator Tool
Subnet Search
You can also use the Locator Tool to locate (and ping, if desired) all IP addresses on a
subnet or a portion of a subnet, resolve host names to the located IP addresses, and resolve
MAC addresses to the located IP/hostname pair. To do so:
1. Click Clear to clear the default values from the IP and Host fields.
2. In the IP field, enter the appropriate bytes of the subnet address:
To search an entire subnet, enter the first three bytes of the subnet address;
To search a portion of a subnet, enter the first three bytes of the subnet
address; in the fourth byte field, enter the IP at which you want the search to
start.
3. If you have chosen to search only a portion of a subnet, click to select the
Start subnet/MAC search using 4th numeric IP value shown above
option. A check mark opens in the selection box.
4. Because searching an entire subnet can be time-consuming, you can
configure the Locator Tool to stop at pre-defined intervals, asking if you want
to continue the search. To activate this option, click to select Prompt every
XX devices, and use the text field provided to enter the number of devices
that will be located between prompts. The default value is 10.
5. If you wish to ping each found device once it is located, select the Ping found
devices option; in the text field provided, specify a timeout period, in seconds.
If a device does not respond to the ping request within the specified timeout,
the ping will be considered to be unsuccessful.
6. For the quickest Subnet search, click to select the Do not resolve host
names during subnet search option. This kind of search will locate only IP
addresses (and ping them if you have selected that option); no host name or
MAC resolution will take place. Note that selecting this option inactivates the
Identify MAC address option described in the next step.
7. For the most detailed Subnet search, click to select the Identify MAC
addresses during search option. Though time-consuming, this subnet
search gives you complete IP, host, and MAC resolution for all devices in the
subnet (or subnet portion) you have specified.
8. Click Subnet to start the search. The Locator window will expand (see
Figure 3-16) to display a list box containing the results of the search. A Stop
Searching button will also appear just above the list box; click this button at
TIP
Once the search begins, a Stop Searching button will also appear, allowing you to stop
the search at any time.