13.5. Options

Select the ToolsOptions menu item to customise various aspects of sFlowTrend-Pro. On an Apple Macintosh, the customisation dialog is accessed from by selecting Preferences from the application menu.

13.5.1. Setting the switch, interface, and host naming policy

Use the ToolsOptions menu item, View tab, to tell sFlowTrend-Pro how you would like your switches and their interfaces to be displayed and whether end hosts are identified using IP addresses or DNS names.

13.5.1.1. Setting the switch naming policy

Switches can be displayed using one of the following options:

SNMP IP address
The IP address that sFlowTrend-Pro uses to communicate with the switch via SNMP
sFlow agent address
The IP address that is used by the sFlow agent on the switch to uniquely identify the switch.
DNS name
The domain name obtained from the reverse DNS lookup of the SNMP IP address of the switch. If the reverse DNS lookup fails, the SNMP IP address will be used instead.
sysName
The SNMP sysName obtained from the SNMP MIB. If sFlowTrend-Pro cannot communicate with the switch using SNMP (see Section 14.1.7, “sFlowTrend-Pro cannot communicate with the switch using SNMP”), then SNMP IP address will be used instead.

If the SNMP IP address or the sFlow agent address option is chosen, the switches will be listed in numerical order in the Switch selector in the Charts and Interfaces tabs. For other options, the switches will be listed in alpha-numeric order, even if an IP address is shown because the name is not available.

13.5.1.2. Setting the interface naming policy

Interfaces can be displayed using one of the following options:

ifIndex
The integer that the switch uses to uniquely identify the interface.
ifName
The friendly name assigned to the interface, identifying the card/slot. For example A1, ethernet1/1. If sFlowTrend-Pro cannot communicate with the switch using SNMP (see Section 14.1.7, “sFlowTrend-Pro cannot communicate with the switch using SNMP”), then the ifIndex will be used instead.
ifAlias
A string administratively assigned to the interface often giving useful information about its purpose. For example "Connection to servers". If sFlowTrend-Pro cannot communicate with the switch using SNMP (see Section 14.1.7, “sFlowTrend-Pro cannot communicate with the switch using SNMP”), or the ifAlias is not assigned, then ifIndex will be used instead.

If the ifIndex option is chosen, the interfaces will be listed in numerical order in the Interface selector in the Charts tab. For other options, the interfaces will be listed in alpha-numeric order, even if the ifIndex is shown because the name is not available.

13.5.1.3. Setting the host naming policy

In the Charts and Thresholds tabs, end hosts can be identified using IP addresses or DNS names. Check the Resolve IP addresses to hostname in charts checkbox to tell sFlowTrend-Pro to use DNS names instead of IP addresses.

13.5.2. Configuring global SNMP settings

Select the ToolsOptions menu item, SNMP tab to configure the SNMP settings which will be used for all switches. These settings will be used when querying switches for the friendly names for the switches and interfaces. You can ask sFlowTrend-Pro to communicate with the switches using SNMP v2c or SNMP v3. If sFlowTrend-Pro is to use SNMP to configure the switches to send sFlow, then the SNMP settings must allow write access to the sFlow MIB, and the switch must allow the system running sFlowTrend-Pro write access.

These global settings can be explicitly overridden for a specific switch (see Section 13.2, “Configuring agents in sFlowTrend-Pro ).

When these global settings are changed, sFlowTrend-Pro will start using the new settings to communicate with switches that use the global settings.

13.5.3. Configuring advanced options

Select the ToolsOptions menu item, Advanced tab to view and configure some less commonly used settings:

Restore warnings

Checking this checkbox will cause sFlowTrend-Pro to display warnings asking you to confirm actions, for example when deleting switches or when exiting sFlowTrend-Pro. When these warnings are shown, you can ask sFlowTrend-Pro not to show these warnings again. This checkbox can be used to restore the behaviour of showing warnings.

Show alerts on this client

Leaving this checkbox checked will display alerts about sFlowTrend-Pro, such as notification of software updates, on this client. If you clear the checkbox, you will not recieve any notifications on this client. This may be useful if, for example, you are using sFlowTrend-Pro to display network status in a public area.

Report problems with sFlowTrend-Pro to InMon

Leaving this checkbox checked will allow sFlowTrend-Pro to send reports of software problems to InMon. We appreciate this feedback, and it helps us improve sFlowTrend-Pro. If you do not want problem reports to be sent, then clear this checkbox.

sFlowTrend home directory

Allows you to change the directory used by sFlowTrend-Pro for storing information. The directory is configured differently, depending on whether you are running sFlowTrend-Pro as an application, or as a service.

If you are running as an application, then the home directory is used to store traffic and log data, and custom configuration information. If you have enabled user authentication (see Section 13.6, “Configuring user authentication , then only Administrators can change the home directory. If you change the home directory, all currently saved traffic data and custom configuration information will be lost. sFlowTrend-Pro must be restarted for the change to take effect.

If you are running sFlowTrend-Pro as a service, then two home directories are shown in advanced settings: one for the client, and one for the server:

sFlowTrend-Pro home directory
This allows the home directory for the current client to be changed. The client home directory is used for log files, and any custom configuration that is applicable to the client. The client needs to be restarted for changes to the home directory to take effect.
sFlowTrend-Pro server home directory
Displays the home directory used by the server. The server home directory is used to store traffic and log data, and custom configuration information. This directory cannot be changed from within sFlowTrend-Pro; it is entered when installing sFlowTrend-Pro. To change the directory, you can reinstall sFlowTrend-Pro.

13.5.4. Proxy configuration

If a proxy server is required for connectivity to the Internet, this is configured by selecting the ToolsOptions menu item, Proxies tab. If you are running sFlowTrend-Pro as a service, the proxy can be set for both the client and the server. When you are running as an application, then just one proxy can be set.

It is important to set the proxies if required. The server uses Internet connectivity to download the initial license and any subsequent updates (for example, if you renew the license), and the client uses the Internet to display product alerts.

The configuration available for the proxies is as follows:

No proxy

No proxy will be used.

Default system proxy

Sets the proxy to be the same as the system default. Note that the system default settings are not necessarily those defined in the browser that you use: on Windows, the system default settings are those configured in SettingsControlPanelInternet Options. In Linux under Gnome, the system default settings are those configured in SystemPreferencesInternet and NetworkNetwork Proxy.

On some Operating Systems the system default setting may not work (with the result being that no proxy is used). It is also possible for this setting to cause sFlowTrend-Pro to crash, due to a problem with some JVMs. If this occurs, please contact support for further help.

Manual proxy configuration

Allows configuration of a proxy server only for sFlowTrend-Pro. The address of the proxy server and the TCP port used to communicate with it should be entered into the Http proxy and port fields, respectively.

If there are any hosts that do not require a proxy, you can enter the address of these hosts into the Do not proxy for hosts field. Multiple hosts can be entered here, separated by semicolons or commas, and wildcards can be used to represent a range of hosts (for example, "*.inmon.com").

[Note] Note

If you change the proxy configuration from No Proxy or Manual proxy to Default system proxy, or vice-versa, then you must restart the sFlowTrend-Pro client or service (depending on which proxy was changed) to make the change effective.

13.5.5. Email

sFlowTrend-Pro uses a Simple Mail Transfer Protocol (SMTP) server to send email notification of events. The SMTP server receives messages from sFlowTrend-Pro and forwards them to their destination. The following SMTP server settings must be configured:

SMTP server
The hostname or IP address of the server that will receive messages from sFlowTrend-Pro for forwarding to their destinations (email recipients).
Port
The TCP port on the SMTP server that sFlowTrend-Pro connects to to send email for forwarding.
Sender
The full name of the user (for example sFlowTrend) that will be shown as the sender of emails sent by sFlowTrend-Pro
Address
The email address to be used as the From address in emails sent by sFlowTrend-Pro
Use authentication
Select authentication if your SMTP server will only receive and forward email from authenticated senders. If you select use authentication, then you must also enter the Username and Password that can be used to authenticate sFlowTrend-Pro as a vaild sender.
Encryption
The email encryption method (None, TLS, SSL).

You can test the SMTP server configuration by clicking Test configuration. An email will be sent to the sender email address that you have entered. If the configuration fails, sFlowTrend-Pro will show an error message.

13.5.6. Advanced sFlow

Select the ToolsOptions menu item, Advanced sFlow tab to view and configure some less commonly used sFlow related settings:

sFlow collector address

If the system you are running sFlowTrend-Pro on has multiple IP addresses and you are using SNMP to configure switches to send sFlow you can use the sFlow collector address to select the address that is configured on the switches as the sFlow collector or receiver address (see Section 13.2.1, “Adding a switch that is to be configured via SNMP”). Note that sFlowTrend-Pro will listen for sFlow on all addresses, and unless you are using SNMP configuration this setting is not used.

If there is a NAT device between the system running sFlowTrend-Pro and the switches, or you are running sFlowTrend-Pro in a virtual or container environment where a virtual NAT device is used, you can use an advanced setting (see sflowtrend.natReceiverAddress) to add the public IP address and port of the NAT device to the sFlow collector address selection list. When you select the NAT address and port as the sFlow collector address and you are using SNMP to configure switches to send sFlow, the switches will be configured to send sFlow to the NAT address and port.

sFlow UDP port
This allows you to change the UDP port that sFlowTrend-Pro will listen on to receive sFlow. If you are using a CLI to configure sFlow on your switches, make sure that you configure the switch to send sFlow to this UDP port (see Appendix A, Configuring switches to send sFlow).