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52 MergePoint 5224/5240 Service Processor Manager Installer and Administrator Guide

Configuring virtual networks (DNAT)

The administrator should define a virtual network based on Destination Network Address

Translation (DNAT) in the following cases:

• When multiple non

-contiguous private subnets must be supported by a single network route

(or, in the case of IPSec, a single tunnel) on the client for VPN or native IP access. This would

be the case when target devices are already configured using IP addresses from multiple

address ranges and it is not feasible to change the previously defined IP addresses

• When it is important to hide the addresses of the connected target devices from users by the use

of virtual IP addresses

Virtual networks are defined using the values described in Table 4.18.

Tasks for configuring IP addresses

The administrator may configure IP addresses using the Web Manager or the cli utility. See

Appendix C for additional details about preparing an addressing scheme.

Data Buffering on the MergePoint 5224/5240 SP Manager

The appliance supports the buffering (storing) of data from the consoles of target devices so that the

data can be monitored to detect events of interest and, when appropriate, generate alarms. Enabling

data buffering can be done through the Web Manager or by using the cli utility. Configuring where

data buffer files are stored must be done manually.

The administrator can configure a default for data buffering and then configure each target device

to use the default or not. An administrator can configure data buffering either by using the Web

Manager or by using the cli utility as described in the following sections:

• Configuring Target Devices in the Wizard on page 65 and spmanager on page 148

• spmanager server on page 162

By default, the buffered data is stored in RAM. The administrator may manually configure the

storage of data either on a directory mounted from an NFS file server or on a PC Flash memory

card. See Configuring Storage of Buffered Data on page 111.

Table 4.18: Values for Configuring Virtual Networks

Field Description

Address IP address to assign to the SP manager from the virtual network’s address range. For example, if

the virtual IP address of the network is 10.0.0.0, 10.0.0.254 would be a possible valid IP address

for the SP manager.

Netmask Netmask is used in combination with the network address portion of the Address above to define

the address range of the virtual network.

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