Syntax
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Description
The CHARON-AXP/SMA(+) virtual machine is capable of emulating a total of 4 network controllers. The total number of controller objects is set by the ew-count parameter of the load command. The individual ethernet controller objects are then available as EWA0, EWB0, EWC0 and EWD0 (depending on the number of controllers loaded).
Each virtual interface can be attached to either a physical, host-attached interface or an internal shared memory bus allowing multiple virtual machine instances to communicate with each other. This is controlled by the iface member of the ethernet object. Specifying a value of memory for iface-name will connect the interface to the shared memory bus. To attach to a physical controller iface-name must be set to the name of the controller. This can be found in the host network adapter configuration folder.
By default the network controller is configured as a DE435. This model was chosen at it is supported by almost all operating systems and versions supported on CHARON-AXP. However, it is possible to configure an alternate model by specifying the optional model parameter to the load command. The values for model and the ethernet adapters they emulate are listed in the table below.
| model | Emulated Ethernet Controller |
|---|---|
| DE435 | DE435 EtherWORKS Turbo PCI Adapter |
| DE450 | DE450 EtherWORKS Turbo PCI 10 Adapter |
| DE500 | DE500-BA FastEtherWORKS 10/100 PCI Adapter |
Occasionally it is necessary to force the physical address of a network controller. This can be done using the macaddr member. The value hardware-address must be specified in a hexadecimal, hyphen separated format (e.g. AA-BB-CC-DD-EE-FF).
In the event that the DECnet address of the virtual machine is reconfigured, it may be necessary to reboot the virtual machine to prevent instability.