6.0 Configuring the Closest Server Default Rule

The Closest Server Default rule lets you define the rule that is used by a device to determine the closest authentication, collection, content, and configuration servers when no Closest Server rules have been defined or when none apply. This rule is simply a listing of the servers in the order you want devices to contact them. You cannot add or remove servers from the lists.

For Closest Server Default rules, devices that are Satellites are considered as servers and can be listed for selection in the appropriate lists.

By default, all ZENworks servers and are displayed in the appropriate lists. In addition, any devices that are defined with the Content or Imaging roles are also displayed in the Content Servers list, any devices that are defined with the Collection role are also displayed in the Collection Servers list, and any devices that are defined with the Authentication role are also displayed in the Authentication Servers list.

NOTE:There is no Closest Server Default Rule for Join Proxy.

To configure a Closest Server Default rule:

In ZENworks Control Center, click the Configuration tab, click Infrastructure Management (in the Management Zone Settings panel), then click Closest Server Default Rule.

To configure the servers listed in the any section, do any of the following:

(Conditional) You can perform the following tasks to manage individual servers in any of the server lists (Collection, Content, Configuration, and Authentication):

Task	Steps	Additional Details
Reorder the list	In the desired server list, select the check box for the server, group, or L4 switch you want to move. Click Move Up or Move Down as necessary to change its order in the list. Repeat as necessary to order the list.	Placement in the list determines the order in which servers are contacted. The first list item (server, group, or L4 switch) is contacted first, then the second, and so forth. You can order the items in the lists differently. This allows you to spread the workload initiated by devices by placing different servers higher in one list than in the other lists. For example: Collection Servers: Server1, Group1, Server3, L4Switch5 Content Servers: L4Switch5 Configuration Servers: Server3, Server2, Group1 Authentication Servers: Server1, Server2

Task

Steps

Additional Details

Reorder the list

In the desired server list, select the check box for the server, group, or L4 switch you want to move.
Click Move Up or Move Down as necessary to change its order in the list.
Repeat as necessary to order the list.

Placement in the list determines the order in which servers are contacted. The first list item (server, group, or L4 switch) is contacted first, then the second, and so forth.

You can order the items in the lists differently. This allows you to spread the workload initiated by devices by placing different servers higher in one list than in the other lists. For example:

Collection Servers: Server1, Group1, Server3, L4Switch5
Content Servers: L4Switch5
Configuration Servers: Server3, Server2, Group1
Authentication Servers: Server1, Server2

(Conditional) You can use a group to randomize connections to servers. Each time the server list is sent to a device, it is randomized so that not all devices receive the same ordered list.

For example, assume the server list contains the following:

Server 1
Group 1 (Server 2, Server 3, Server 4)
Server 5

One device might receive the following list: Server 1, Server 3, Server 2, Server 4, Server 5.

Another device might receive a different list: Server 1, Server 4, Server 3, Server 2, Server 5.

In all cases, Server 1 is listed first and Server 5 is listed last, but the order of the servers in Group 1 is randomized.

You can perform the following tasks to manage server groups in any of the server lists (Collection, Content, Configuration, and Authentication):

Task	Steps	Additional Details
Create a server group	In the desired server list, select the check boxes for the servers you want to include in the group, then click Groups > Create Group from Selection. or If you want to create an empty group, click Groups > Create Empty Group. You can add servers to the empty group later using the Groups > Add to Group option. Specify a name for the group, then click OK to add the group to the list. Click Apply to make the change effective.
Add servers to a group	In the desired server list, select the check boxes for the servers you want to add to the group. Click Groups > Add to Group. Do one of the following: To add the selected servers to a new group, select Create New, specify a group name, then click OK. To add the selected servers to an existing group, select a group from the list in the Select Existing field, then click OK. Click Apply to make the change effective.
Reorder the list	In the server list, select the check box for the server, group, or L4 switch you want to move. Click Move Up or Move Down as necessary to change its order in the list. Repeat as necessary to order the list.	Placement in the list determines the order in which servers are contacted. The first list item (server, group, or L4 switch) is contacted first, then the second, and so forth. You can order the items in the lists differently. This allows you to spread the workload initiated by devices by placing different servers higher in one list than in the other lists. For example: Collection Servers: Server1, Group1, Server3, L4Switch5 Content Servers: L4Switch5, Server2, Server3, Server1 Configuration Servers: Server3, Server2, Group1 Authentication Servers: Group1, L4Switch5, Server1, Server2
Copy a group from one list to another list	In the server list to which you want to copy a group, click Groups > Copy Existing Group. For example, to copy a group from the Collection Servers list to the Content Servers list, click Groups > Copy Existing Group in the Content Servers list. Select the desired group from the list, then click OK to copy the group. Click Apply to make the change effective.	If you copy a group to a list that does not already contain the group’s servers, the unlisted servers are removed from the group. For example, if Group1 includes Server1 and Server2 and you copy Group1 to a list that does not include Server1, Server1 is removed from the group.
Remove servers from a group	In the server list, expand the group to display its servers. Select the check boxes for the servers that you want to remove from the group. Click Groups > Remove from Group, then click OK. Click Apply to make the change effective.	The servers are not removed from the server list, only from the group.
Remove a group	In the server list, select the check box for the group you want to remove. Click Groups > Remove Group, then click OK. Click Apply to make the change effective.	The group’s servers are not removed, only the group.

(Conditional) If you have ZENworks Servers that are clustered behind an L4 switch, you can define the L4 switch and add the servers to the definition. This enables the L4 switch to continue to balance the traffic among those servers.

Table 6-1 L4 Configuration

Task	Steps	Additional Details
Create an empty L4 Switch Definition	Using this panel, you can create an empty L4 switch by specifying the following details: Name: Name of the L4 switch. DNS Name/IPv4 Address: In this field, you can either specify an IPv4 address or a DNS name that resolves to an IPv4 address of the L4 switch. DNS Name/IPv6 Address: In this field, you can either specify an IPv6 address or a DNS name that resolves to an IPv6 address of the L4 switch. You must specify L4 switch name and at least one DNS name or IP address.
Create L4 Switch Definition from Selection	Using this panel, you can create L4 switch definition for the selected servers. Name: Name of the L4 switch. DNS Name/IPv4 Address: In this field, you can either specify an IPv4 address or a DNS name that resolves to an IPv4 address of the L4 switch. DNS Name/IPv6 Address: In this field, you can either specify an IPv6 address or a DNS name that resolves to an IPv6 address of the L4 switch. You must specify L4 switch name and at least one DNS name or IP address.	When you create a new L4 switch definition, then selected servers will be added to the newly created definition.
Add servers to an L4 switch definition	In the server list, select the check boxes for the servers you want to add to the L4 switch definition. Click L4 Switch > Add to L4 Switch Definition. Do one of the following: To add the selected servers to an existing L4 switch definition, select an L4 switch definition from the list in the Select Existing field, then click OK. To add the selected servers to a new L4 switch definition, select Create New and specify the following, and then click OK. Name: Name of the L4 switch. DNS Name/IPv4 Address: In this field, you can either specify an IPv4 address or a DNS name that resolves to an IPv4 address of the L4 switch. DNS Name/IPv6 Address: In this field, you can either specify an IPv6 address or a DNS name that resolves to an IPv6 address of the L4 switch. You must specify L4 switch name and at least one DNS name or IP address. Click Apply to make the change effective.	When you create a new L4 switch definition, then selected servers will be added to the L4 switch definition.
Create an empty L4 Switch Definition	Using this panel, you can create an empty L4 switch by specifying the following details: Name: Name of the L4 switch. DNS Name/IPv4 Address: In this field, you can either specify an IPv4 address or a DNS name that resolves to an IPv4 address of the L4 switch. DNS Name/IPv6 Address: In this field, you can either specify an IPv6 address or a DNS name that resolves to an IPv6 address of the L4 switch. You must specify L4 switch name and at least one DNS name or IP address.
Create L4 Switch Definition from Selection	Using this panel, you can create L4 switch definition for the selected servers. Name: Name of the L4 switch. DNS Name/IPv4 Address: In this field, you can either specify an IPv4 address or a DNS name that resolves to an IPv4 address of the L4 switch. DNS Name/IPv6 Address: In this field, you can either specify an IPv6 address or a DNS name that resolves to an IPv6 address of the L4 switch. You must specify L4 switch name and at least one DNS name or IP address.	When you create a new L4 switch definition, then selected servers will be added to L4 switch definition.
Add servers to an L4 switch definition	In the server list, select the check boxes for the servers you want to add to the L4 switch definition. Click L4 Switch > Add to L4 Switch Definition. Do one of the following: To add the selected servers to an existing L4 switch definition, select an L4 switch definition from the list in the Select Existing field, then click OK. To add the selected servers to a new L4 switch definition, select Create New and specify the following, and then click OK. Name: Name of the L4 switch. DNS Name/IPv4 Address: In this field, you can either specify an IPv4 address or a DNS name that resolves to an IPv4 address of the L4 switch. DNS Name/IPv6 Address: In this field, you can either specify an IPv6 address or a DNS name that resolves to an IPv6 address of the L4 switch. You must specify L4 switch name and at least one DNS name or IP address. Click Apply to make the change effective.	When you create a new L4 switch definition, then selected servers will be added to the L4 switch definition.

Task	Steps	Additional Details
Create an L4 switch definition	In the server list, select the check boxes for the servers to include in the L4 switch definition, then click L4 Switch > Create L4 Switch Definition from Selection. or If you want to create an empty L4 switch definition, click L4 Switch > Create Empty. You can add servers to the empty definition later using the L4 Switch > Add to L4 Switch Definition option. Specify the DNS name or the IP address of the L4 switch, then click OK to add the L4 switch to the list. Click Apply to make the change effective.
Add servers to an L4 switch definition	In the server list, select the check boxes for the servers you want to add to the L4 switch definition. Click L4 Switch > Add to L4 Switch Definition. Do one of the following: To add the selected servers to a new L4 switch definition, select Create New and specify the DNS name or IP address of the L4 switch, then click OK. To add the selected servers to an existing L4 switch definition, select an L4 switch definition from the list in the Select Existing field, then click OK. Click Apply to make the change effective.
Reorder the list	In the desired server list, select the check box for the server, group, or L4 switch you want to move. Click Move Up or Move Down as necessary to change its order in the list. Repeat as necessary to order the list.	Placement in the list determines the order in which servers are contacted. The first list item (server, group, or L4 switch) is contacted first, then the second, and so forth. You can order the items in the lists differently. This allows you to spread the workload initiated by devices by placing different servers higher in one list than in the other lists. For example: Collection Servers: Server1, Group1, Server3, L4Switch5 Content Servers: L4Switch5, Server2, Server3, Server1 Configuration Servers: Server3, Server2, Group1 Authentication Servers: Group1, L4Switch5, Server1, Server2
Remove servers from an L4 switch definition	In the server list, expand the L4 switch definition to display its servers. Select the check boxes for the servers that you want to remove from the L4 switch definition. Click L4 Switch > Remove from L4 Switch Definition, then click OK. Click Apply to make the change effective.	The servers are not removed from the server list, only from the L4 switch definition.
Remove an L4 switch definition	In the server list, click L4 Switch > Remove L4 Switch Definition, then click OK. Click Apply to make the change effective.	The L4 switch definition's servers are not removed, only the definition.

NOTE:In the Closest Server Default Rules page, the check mark indicates whether the server or L4 has either IPv4 or IPv6, or both.

When you add a server to a group, then both IPv4 and IPv6 URLs of the server will be part of the group. You cannot add the part of the Primary Server (IPv4 or IPv6 URLs) to the group separately.

Protocols enabled on Primary Servers	Protocols configured on L4 Switch
Protocols enabled on Primary Servers	IPv4	IPv6	IPv4 + IPv6
IPv4	Supported IPv4 URLs of this Primary Server will be replaced by IPv4 URLs of the L4 Switch in the Closest Server Rules.	Not Supported	Not Supported
IPv6	Not Supported	Supported IPv6 URLs of this Primary Server will be replaced by IPv6 URLs of the L4 Switch in the Closest Server Rules	Not Supported
IPv4 + IPv6	Supported IPv4 URLs of this Primary Server will be replaced by IPv4 URLs of the L4 Switch in the Closest Server Rules. The Primary Server object will still be visible outside the L4 switch which indicates that the IPv6 URLs can be directly accessed by the managed devices. Alternately, IPv6 URLs can also be added to another L4 switch with IPv6 address.	Supported IPv6 URLs of this Primary Server will be replaced by IPv6 URLs of the L4 Switch in the Closest Server Rules. The Primary Server object will still be visible outside the L4 switch which indicates that the IPv4 URLs can be directly accessed by the managed devices. Alternately, IPv4 URLs can also be added to another L4 switch with IPv4 address.	Supported IPv4 and IPv6 URLs of this Primary Server will be replaced by IPv4 and IPv6 URLs of the L4 Switch respectively in the Closest Server Rules.

(Optional) You can perform the following tasks to manage the server lists:

Task	Steps	Additional Details
Remove all the Satellites from the server lists of the Closest Server Default rule	Click Remove Current Satellite Servers.	You can again add the Satellites to the server lists of the default rule by clicking Add Current Satellites Servers.
Add the entries of all Satellites in to the server lists of the Closest Server Default rule	Click Add Current Satellite Servers.	The entries of all Satellites are added in to the server lists depending on the individual roles defined for each Satellite device.
Verify whether all ZENworks Servers are contained in the server lists of the Closest Server Default rule	Click Validate Server Lists.	If any existing server is missed out from the list, the server is added to the list

(Optional) If you want to automatically add new Satellites to the server lists of the Closest Server Default rule and synchronize the settings of the existing Satellites with their corresponding entries in the Closest Server Default rule, select the New and modified Satellite Servers should be added to the these default rule lists option. By default, the option is selected.
Specify the number of ZENworks servers whose data must be sent to the managed devices at a time. The available options are:
- Unlimited: By default, the contact information about all servers listed in the effective rule’s lists are sent to the managed devices. In addition, unless excluded in the effective rule, the servers listed in the Closest Server Default rule are appended to the servers listed in the effective rule.
- Limit to <a _numeric_value_that_you_specify> Servers per list: If you want to converse bandwidth between the server and the managed devices, specify the number of servers whose data must be sent to the managed devices at a time.
NOTE:You can also configure the Limit Servers Returned to Agent setting for each Closest Server rule. The limit that you set in the Closest Server rule overrides the limit that you set in the Closest Server Default rule.
Click OK or Apply to save the changes.