Subnet

Screen Reference > Network Tree > Subnet

Subnet List

Subnet Details

Node Attributes

Event List

Add Subnet

Edit Subnet

You can review a list of subnets, add new ones, see their details and change their properties.

Subnet List

"Subnet List" lists all subnets monitored by the plug-in.

Table 1: Subnet List
Item Name	Description
Items per page	Lets you select a number of subnets displayed on a single page.
"Create" button	Lets you add a subnet to monitor.
Copy to Clipboard	Copies the subnet list (name, network address, number of detected devices and number of monitored devices) to clipboard as a tab-delimited text. It is useful when you want to copy a list to your text editor. You can filter target subnets with "Search" box. "Number of items on the page" and the current page do not affect an output.
Export to CSV file	Exports the subnet list (name, network address, number of detected devices and number of monitored devices) to a CSV file. You can filter target subnets with "Search" box. "Number of items on the page" and the current page do not affect an output.
Export to Excel	Exports the subnet list (name, network address, number of detected devices and number of monitored devices) to an Excel book file (.xlsx for Microsoft Excel 2007 or later). You can filter target subnets with "Search" box. "Number of items on the page" and the current page do not affect an output.
Print	Shows the subnet list (name, network address, number of detected devices and number of monitored devices) on another browser window or tab and opens a print dialog box. You can filter target subnets with "Search" box. "Number of items on the page" and the current page do not affect an output.
Search field	Lets you filter target subnets by keywords. The search ignores case. "." and "/" in the search keywords do not match them in the network address ("." and "/" in "192.168.1.0/24").
Name	Shows the name of the subnet.
Network Address	Shows a subnet address block by an IPv4 address and a prefix length (xxx.xxx.xxx.xxx/xx format).
Detected Devices	Shows the number of devices in the subnet.
Monitored Devices	Shows the number of detected devices which are monitored.
"Edit" button	Opens Edit Subnet page for the subnet.
"Details" button	Opens Subnet Details page for the subnet.
"Delete" button	Opens "Delete Subnet" dialog box for the subnet. Click "Yes" to delete the subnet. Click "No" or "Close (x)" button at the top left of the dialog box allows you to cancel the delete operation and goes back to "Subnet Details" page. Note If you delete a subnet that contains many devices, you may see an internal server error, but the error will disappear after a while.
Displayed Range	Currently displayed range of the list is shown as "From Xth to Yth out of Z items".
Page Navigation	Lets you view a specific page of the list. First Shows the first page. Previous Shows the previous page. Page Number When you click a page number, the page will be shown. Current page number is grayed out. Next Shows the next page. Last Shows the last page.

Subnet Details

You can open the "Subnet Details" page by clicking a subnet name on the Device Tree View page.
"Subnet Details" page shows its attributes and a event list.

Node Attributes

Table 2: Node Attributes
Item	Content
"Gear" icon	Clicking "Gear" icon shows the "Auto Discovery" submenu for the subnet. An auto discovery on a subnet scans nodes in the subnet and adds them to the Tree View.
Name	Shows a user-defined name of the subnet.
Network Address	Shows an IPv4 address and a prefix length (xxx.xxx.xxx.xxx/xx format).
Detected Devices	Shows the number of devices in the subnet.
Monitored Devices	Shows the number of detected devices which are monitored.
SNMP Parameter Name	Shows a Get Parameter Name used to get information from the device via SNMP. By clicking this you can see the detail of an SNMP Parameter.
Status	Shows the status of the subnet
Edit	Opens Edit Subnet page for the subnet.
Remove	Opens "Delete Subnet" dialog box for the subnet. Click "Yes" to delete the subnet. Click "No" or "Close (x)" button at the top left of the dialog box allows you to cancel the delete operation and goes back to "Subnet List" page. Note If you delete a subnet that contains many devices, you may see an internal server error, but the error will disappear after a while.

Event List

You can see a list of event logs on "Event Log List" page.

Table 3: Event List
Item Name	Description
Event Date/Time	Shows the date/time of the event
Source Name	Shows the event source name such as node name where the event occurred.
Model Name	Shows the model name of the event source (when the source is a device).
Event Name	Shows a type of the event.
Message	Shows a descriptive message for the event.
Details	Moves to Event Log Details page for the event.
Page Navigation	Lets you view a specific page of the list. First Shows the first page. Previous Shows the previous page. Page Number When you click a page number, the page will be shown. Current page number is grayed out. Next Shows the next page. Last Shows the last page.

Add Subnet

You can open "Add Subnet" page by selecting the Network on "Tree View" and clicking "Add Subnet" from "Gear" icon's submenu on Device Tree View page.
"Add Subnet" page lets you add a new subnet to monitor.
When you added a subnet, SNMP plug-in begins an auto discovery on the subnet and added found nodes under the subnet in the Tree View.

Note
Do not delete the subnet while Auto Discovery is running.

Table 4: Add Subnet
Item	Content
Name	Enter a name for the subnet. Should be 1 to 35 characters in length, with alphabets, numbers and symbols (space " % , - < > ^ _ ` { \| } ~ can be used). Note A subnet name cannot be changed once created. To change the name, you have to delete and add it with a new name.
Network ID	Enter a network ID (IPv4 network address such as 192.168.1.0) for the subnet.
Subnet Mask	Enter a subnet mask (e.g. 255.255.255.0) or a prefix length (for example, "24") for the subnet. Note Set the subnet mask to a value greater than 22 bits long (255.255.252.0), i.e., set it so that the number of IP addresses is less than 1,024. Examples: 22-bit mask (255.255.252.0) Number of IP addresses: 1,024 23-bit mask (255.255.254.0) Number of IP addresses: 512 24-bit mask (255.255.255.0) Number of IP addresses: 256 : : If you need to set a mask value smaller than the above (such as a 21-bit mask), change the PING condition to "Use direct broadcast address" or "Use seed file instead of PING" in the SNMP Plug-in's system configuration utility.
SNMP Parameter Name	Select a Get Parameter Name used to get information from the device via SNMP.
SNMP Parameter List	Opens SNMP Parameter List page. You can create, edit or delete SNMP parameters on "SNMP Parameter List" page.
"Create" button	Adds a new subnet with the data you input on the page and moves to the Device Tree View page.

Edit Subnet

You can open "Edit Subnet" page by clicking a subnet name in the node attribute section of Subnet Details page.
"Edit Subnet" page lets you edit node attributes of the subnet.

Table 5: Edit Subnet
Item	Content
Name	Shows the subnet name. Note A subnet name cannot be changed once created. To change the name, you have to delete and add it with a new name.
Network ID	Shows the network ID (IPv4 network address such as 192.168.1.0) of the subnet.
Subnet Mask	Shows the subnet mask of the subnet.
SNMP Parameter Name	Select a Get Parameter Name used to get information from the device via SNMP.
SNMP Parameter List	Opens SNMP Parameter List page. You can create, edit or delete SNMP parameters on "SNMP Parameter List" page.
"Save" button	Saves changes to the subnet attributes and moves to Subnet Details page.

C613-04155-00 Rev A

06 Sep 2023 11:35