Cyclades AlterPath BladeManager Manuál s instrukcemi stáhnout pdf (Strana 65)

Chapter 4: Administration Introduction 51

After configuring a private subnet, the administrator then assigns to each target device the

following two address

-related parameters:

• The name of the private subnet

• An address within the private subnet’s address range to be used by the target device when

communicating with the SP manager

When a target device is not assigned a private subnet, the SP manager attempts to contact the target

device using the default route and fails in the attempt, because devices are not connected on the

public side of the SP manager.

Multiple private subnets may be needed if IP addresses are already assigned to connected target

devices’ Ethernet ports if the IP addresses are not in the same range.

Private subnets can be configured in the Web Manager on the Wizard Subnets screen or on the

Network Private Subnets screen as described in Configuring Subnets and Virtual (DNAT) Networks

in the Wizard on page 63 and Configuring Private Subnets and Virtual Networks on page 106. For

more details about setting up subnets, see Address configuration for target devices on page 180.

Subnets are defined using the values described in Table 4.17.

The SP manager derives the range of addresses in the subnet from the appliance side IP address and

the subnet mask. The SP manager uses the specified information to create a route to the subnet in

the SP manager’s routing table.

Example

When the administrator defines an appliance

-side IP address of 192.168.0.254 and a subnet

netmask of 255.255.255.0, the private subnet address derived from this configuration is

192.168.0.0. Since the broadcast address is 192.168.0.255 (by convention) and the SP manager’s

address is 192.168.0.254, the administrator can assign any of the remaining available addresses

between 192.168.0.1 and 192.168.0.253 when configuring target devices.

Table 4.17: Fields on the Private Subnet Configuration Dialog

Field Definition

Private subnet name Any meaningful name chosen by the administrator.

Appliance side IP address Address for the SP manager and target devices to use when communicating with

each other. This address must be within the private subnet’s IP address range.

Subnet mask Used to define the range of addresses available on the subnet.

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Cyclades AlterPath BladeManager Manuál s instrukcemi Strana 65