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5 - 8 VM600 networking manual MAVM600-NET/E

Edition 9 - February 2018

Adding a default gateway to a CPUM card

ETHERNET COMMUNICATIONS WITH A VM600 RACK

To get around this potential problem, a default gateway can be defined for a CPUM card.

NOTE: For proper operation, the IP addresses of the gateway and the CPUM must belong

to the same subnet. If this is not the case, the gateway cannot be accessed by the

CPUM.

In addition, the host computer and the gateway must also have IP addresses that are visible

to each other.

5.6 Adding a default gateway to a CPUM card

5.6.1 CPUM cards running firmware version 075 or later

For a CPUM card running firmware version 075 or later, the default gateway for a CPUM card

is defined and added using the sysinit file.

5.6.2 About the sysinit file

The sysinit file is a system initialisation file that contains commands to set up various

device drivers and services for the CPUM card.

To add a default gateway to a CPUM card, a command must be added to the

Configure TCP/IP section of the sysinit file, as shown in 5.6.2.1 Example sysinit file.

The path to the sysinit file is /etc/system/sysinit

5.6.2.1 Example sysinit file

The Configure TCP/IP section of an example sysinit file without a default gateway:

#--------------------------------

# Configure TCP/IP

startnet

The Configure TCP/IP section an example sysinit file with a default gateway:

#--------------------------------

# Configure TCP/IP

startnet

route add default 10.10.1.254

5.6.2.2 Description

To add a default gateway to a CPUM card, the route command is used. For example:

route add default 10.10.1.254

Where:

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