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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-AXP maps the virtual adapter to a dedicated Ethernet adapter in the Windows host system.
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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 NIC
By 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-AXP PCI bus.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
Configuration parameters
The built-in SGEC controller emulator ("EZA") Each virtual network controller has the following parameters that are specified with the "set" command:
Parameter | Type | Value | |||||||||||||
interface | Text String | Name of the corresponding instance of the "packet_port" component | |||||||||||||
| station_address | Text String | 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. Set the "station_address" when you need to configure a satellite (remotely booted) system that will run DECnet or when the migrated software uses the permanent address on the network adapter. Format:
or
Example:
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rx_fifo_size | Numeric | "rx_fifo_size" sets the receive FIFO size. The value is specified in Kb and, by default, is pre-calculated from the connected port’s size of the receive queue. Typically, you do not need to change the "rx_fifo_size" parameter. It is available for extended tuning and debugging purposes. | |||||||||||||
| adapter_mode | Text String | Defines the link speed and the duplex settings of the virtual network adapter (except for DE602/DE602AA - see below). The values are:
Example:
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Example:
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DE602 and DE602AA network adapters link speed and duplex settings
Regardless of the "adapter_mode" setting in CHARON-AXP configuration file (see above), DE602 and DE602AA network adapters remains in "Auto-negotiation" mode, since the EIDRIVER of OpenVMS checks for EIx0_MODE environment variable when configuring the network card.
So mode propagation is implemented in CHARON-AXP via SRM console EIx0_MODE environment variable:
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The EIx0_MODE variable name is case insensitive, while its values are case sensitive! This is feature of OpenVMS EIDRIVER.
The values are:
| Parameter | Description |
|---|---|
| "Auto" | Auto-negotiate (default) |
| "Twisted" | 10Mbps half duplex |
| "Full" | 10Mbps full duplex |
| "Fast" | 100Mbps half duplex |
| "FastFD" | 100Mbps full duplex |
Example:
>>>set eix0_mode FastFD |
Packet Port
The CHARON-specific "packet_port" interface establishes a connection between an Ethernet adapter in the Windows host system and a network adapter in the virtual VAX/PDP11 HP Alpha system.
For every virtual adapter instance loaded, one dedicated host Ethernet physical adapter is required.
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