Networking
Table of Contents
General description
CHARON-AXP supports emulation of the following network adapters:
DE435
DE450
DE500AA
DE500BA
DE602
DE602AA
Each of them is a PCI Ethernet adapter based on the DEC21040 (DE435, DE450, DE500AA and DE500BA) and the Intel i8255x (DE602 and DE602AA) PCI Ethernet adapter chips for the HP Alpha.
CHARON Virtual Machine (VM) maps the virtual adapter to a dedicated Ethernet adapter in the Windows host system.
All the emulated controllers are loaded and configured in the same way.
The Ethernet adapter in the Windows host system must support dynamic changes of its MAC address (i.e. no reboot of the host system is required to change the MAC address), which is the case with nearly all modern Ethernet adapters.
By default the PCI Ethernet adapters use first available PCI slot. If instead some particular slot is needed, refer to this section for details of specific placement of PCI peripherals on CHARON VM PCI bus.
Network booting is not currently supported.
Configuration steps
To configure CHARON VM networking, follow these 3 steps:
Load network adapter (if required)
Use the "load" command as shown below.
Example:For DEC21040 adapters
For Intel i8255x adapters
load DE500BA/dec21x4x NICload DE602/i8255x NICBy default each loaded virtual network adapter uses first available PCI slot. If instead some particular slot is neded, refer to this section for details of specific placement of PCI peripherals on CHARON VM PCI bus.
In AlphaStation 400 configuration use the following syntax for network adapter loading:
load DE500AA/dec21x4x NIC irq_bus = isa
.Load "packet_port"
Load "packet_port" to connect network adapter to the host hardware network card (or to a virtual network interface).
Example:load packet_port/chnetwrk NDIS interface = "connection:Charon".
Connect the loaded "packet_port" to the loaded virtual network adapter
Connect the network adapter to the "packet_port" by setting the interface name.
Example:set NIC interface = NDIS.
The interface name can be either "(disabled)" for a disabled interface or "connection:<Windows network interface name>"
Examples:
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The AlphaServer DS15 and DS25 contain two built-in PCI Ethernet adapters. Models and names (EI* or EW*) of them depend on configuration addon. Choose one of the two or none, but not both. The first instantiates onboard network interfaces as EIA and EWA. While the second - EWA and EWB (enabled by default for backward compatibility)
Example:
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Specification of "chnetwrk" is not mandatory, but it is still used for compatibility
Configuration parameters
Each virtual network controller has the following parameters that are specified with the "set" command:
interface
Parameter | interface |
|---|---|
Type | Text string. |
Value | Name of the corresponding instance of the "packet_port" component |
station_address
Parameter | station_address | |||
|---|---|---|---|---|
Type | Text String | |||
Value | The "station_address" provides the ability to configure the adapter’s permanent address. By default the adapter’s permanent address is read from the host system’s NIC. Format:
or
Example:
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