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To configure connection settings for Network Manager 1 In the Navigation pane, click Change Settings.

2 To configure the default settings for NetVault Backup Server, click Server Settings.

3 To configure the default settings for a NetVault Backup Client, click Client Settings. In the clients table, select the applicable client, and click Next.

4 Under Services, click Network Manager.

5 In the Network Manager dialog box, under Connections, configure the following settings. Time between security

broadcasts Security broadcasts discover the password-protection status of clients, and notify whether its password has been activated or disabled on a client. The Client Status icons on the NetVault WebUI are updated based on these broadcasts. The default interval for security broadcasts is 600 seconds. To change the default setting, type or select a new value. The broadcast interval is specified in number of seconds.

Time between availability

checks The NetVault Backup Server performs availability checks at regular intervals to scan for changes in the network settings. If a change is detected, the server sends an interim broadcast to propagate the new settings. The broadcast system is then reset to regular pulse, reducing network traffic. The default interval for availability checks is 10 seconds. To change the default setting, type or select a new value. You can reduce the interval between two checks to quickly detect and transmit changes. If you do not want to apply the changes immediately, use the default value or set it equal to the interval for Availability Broadcasts.

Table 20. Network Manager connection settings

Setting Description

Broadcast details to machines on local networks

This check box is selected by default. Although this option can be disabled, it is not recommended. Availability broadcasts are needed for automatic discovery of clients and status updates. Without these broadcasts, you need to manually locate new clients using the Find Machine command to add them. For more information about this command, see Locating a client.

Preferred network address

Comma separated list of barred address(es) Comma separated list of fallback address(es)

For multihomed systems, you can configure the following settings: • Preferred network address – Specify the primary IP address for

network connection. You can specify only a single IP address. • Comma separated list of barred address(es) – Specify the barred

or blocked addresses that are not to be used for NetVault Backup connections. To specify multiple addresses, use a comma as delimiter.

NOTE: The NetVault Backup Service must be restarted after making any changes to the barred addresses setting.

• Comma separated list of fallback address(es) – Specify the fallback addresses to use when the preferred network address is not available. For multiple addresses, use a comma as delimiter.

Table 19. Network Manager timeout settings

Important notes:

• Ensure that the preferred, barred, and fallback addresses do not conflict with each other.

• These settings should only be used when the local machine is connected to multiple networks, either through multiple Network Interface Cards or through virtual IP addressing.

When a connection is initiated, the addresses are attempted in the following order:

• Preferred network address • Fallback addresses

• Any other addresses in the order defined by the binding order of the host machine

If the preferred address is unavailable and the NetVault Backup Server starts using a fallback address, it does not automatically revert back to the preferred address when the IP becomes available.

To force the NetVault Backup Server to use the preferred address, do one of the following:

• Remove the client and add it again.

When you remove the client, the message “Machine <NetVault Backup Machine Name> Has Gone Down” (Warning Level: Background) is displayed on the View Logs page. Wait until the timeout for remote connection expires. The timeout interval is determined by the Time to complete remote connection setting (set to 60 seconds by default).

When the client is up and detected on the network, the message “Machine <NetVault Backup Machine Name> Has Come Up” (Warning Level: Background) is displayed on the View Logs page. To add the client, use the Find Machine command, and specify its preferred network address in the box.

• Alternatively, disable or disconnect the network interface currently in use until the timeout for remote connection expires. The value configured for the Time to complete remote connection setting determines the duration for which the network interface needs to be disabled or disconnected. Restart the NetVault Backup Service when the client is reported as unavailable. The NetVault Backup Server uses the preferred address when the next connection attempt is made after you restart the service on the client. Comma separated list of

networks and addresses not to resolve

When the NetVault Backup Service starts, it attempts to resolve all client IP addresses listed in the machines.dat file. You can find this file in <NetVault Backup home>\etc on Windows and <NetVault Backup home>/etc on Linux. This can cause a significant delay in the service startup and the machine can appear unresponsive during this time. The Comma separated list of networks and addresses not to resolve option lets you specify the addresses that are not be resolved. This can reduce or avoid the startup delay.

You can specify a single address or a range, for example, 192.168.1.2 or 192.168.x.x. If you want to configure multiple addresses or networks, use a comma as delimiter.

Table 20. Network Manager connection settings

6 Click Apply to apply the new settings and close the dialog box

To get the list of networks from the machines.dat file, issue the following command on Windows:

findstr Network <NetVault Backup home>\etc\machines.dat An example output is given below:

C:\NetVault Backup\etc>findstr Network machines.dat Networks=192.168.203.1,192.168.65.1,172.16.245.1 Networks=10.1.40.81,172.16.211.1,172.16.62.1 Networks=10.1.2.37,172.16.22.1,172.16.128.1 Networks=10.1.240.222,172.16.4.1 Networks=192.168.122.1,10.1.240.52 Networks=10.1.80.83,10.1.2.68,172.16.116.1 Networks=192.168.172.1,10.1.40.98,192.168.147.1 Networks=192.168.174.1,10.1.8.71,192.168.120.1 Networks=192.168.122.1,10.1.8.79 Networks=10.1.8.132,192.168.91.1,192.168.106.1 Networks=10.1.8.163,192.168.233.1,192.168.207.1 Networks=10.1.8.16,200.0.0.1 ...

Based on this output, you can configure the following values in the Comma separated list of networks and addresses not to resolve box:

10.0.0.0, 172.0.0.0, 192.0.0.0, 200.0.0.0

Some networks may have name instead of the IP address. To find the IP addresses for such clients, you can use the nslookup tool.

To prevent the NetVault Backup Service from resolving all networks, specify the first octet of a network address (that is, 192.0.0.0, 10.0.0.0).

NOTE: Using 0.0.0.0 does not prevent the service from resolving the networks.

The startup delay is also caused by clients that are offline and listed on the Manage Clients page. To speed up the process, you can remove the clients that are offline or no longer in use.

In a domain managed by a Windows-based NetVault Backup Server, you may experience a long delay as the service attempts to resolve all client IP addresses using the NBNS (NetBIOS Name Service) protocol. In this environment, you can use the Comma separated list of networks and addresses not to resolve setting to reduce the startup delay. You can also use this setting in an NetVault Backup Client Cluster setup to prevent the service from resolving the private cluster IP addresses.

Table 20. Network Manager connection settings