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| Parameter | station_address | |||
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| 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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rx_fifo_size
| Parameter | rx_fifo_size |
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| Type | Numeric |
| Value | "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. |
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| Parameter | adapter_mode | |||||||||||||
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| Type | Text String | |||||||||||||
| Value | Defines the link speed and the duplex settings of the virtual network adapter (except for DE602/DE602AA - see below). The values are:
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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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 |
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| "Auto" | Auto-negotiate (default) |
| "Twisted" | 10Mbps half duplex |
| "Full" | 10Mbps full duplex |
| "Fast" | 100Mbps half duplex |
| "FastFD" | 100Mbps full duplex |
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| Parameter | interface | ||
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| Type | Text string | ||
| Value | This parameter identifies an Ethernet adapter of the host system dedicated to CHARON-AXP. Syntax:
Example:
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port_enable_mac_addr_change
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| Parameter | port_retry_on_tx | |
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| Type | Numeric | |
| Value | The "port_retry_on_tx" parameter controls the number of times a port will attempt to transmit a packet before giving up. By default, the value is 3. Increasing this value may introduce problems in carrier loss logic, because not all NIC drivers support a carrier status query. Typically, you do not need to increase the value. Example:
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port_pending_rx_number
| Parameter | port_pending_rx_number | |
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| Type | Numeric | |
| Value | The "port_pending_rx_number" parameter sets the number of pending receive buffers. The default value is 63. The maximum value allowed is 195. You may want to increase the "port_pending_rx_number" when you have very busy networking and experience problems like losing connections not related to the carrier loss. Typically, you do not need to change this parameter. Example:
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| Parameter | port_pending_tx_number | |
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| Type | Numeric | |
| Value | The "port_pending_tx_number" parameter sets the number of buffers the port uses to transmit. The default value is 62. You may want to increase the "port_pending_tx_number" value if the log file indicates dropped TX packets due to TX queue overflow. Typically, you do not need to change this parameter. Example:
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log
| Parameter | log | ||||
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| Type | Text string | ||||
| Value | If this parameter is set to some valid file name or a directory where the log files for each individual session will be stored CHARON logs Recv and Xmit packets at the emulated port layer. If an existing directory is specified, CHARON automatically enables creation of individual log files, one for each session using the same scheme as used for the generation of the rotating log files. If the "log" parameter is omitted, CHARON does not create log. In certain situations enabling this parameter may help to detect loss of packets. Example:
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Example
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