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Comment: Wrong parameters are deleted, "port_pending_tx_number" description is corrected

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(warning) The EIx0_MODE variable name is case insensitive, while its values are case sensitive! This is feature of OpenVMS EIDRIVER.

The values are:

ParameterDescription
"Auto"Auto-negotiate (default)
"Twisted"10Mbps half duplex
"Full"10Mbps full duplex
"Fast"100Mbps half duplex
"FastFD" 100Mbps full duplex

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If this parameter is set to "true", CHARON-AXP tries to use very first implementation of "packet_port" having certain restrictions such as inability to automatically change MAC address on given interface etc.

This setting may be needed if CHARON-AXP runs in VMware environment for example.

In other situations please do not change its default value ("false").

Example:

Parameter

Type

Value

interface

Text string

This parameter identifies an Ethernet adapter of the host system dedicated to CHARON-AXP.

Syntax:

set <name> interface="<adapter>"

Example:

set pp1 interface="eth1"

port_enable_mac_addr_change

Boolean

If "true" is specified (default value), CHARON-AXP sets the appropriate Ethernet address automatically.

If "false" is specified, set the Ethernet address manually.

Example:

set pp1 port_enable_mac_addr_change=false

port_ignore_on_rx

Numeric

The "port_ignore_on_rx" parameter provides the ability to shutdown the port when a specified number of sequential "on receive" errors is exceeded.

Typically, errors "on receive" indicate serious (unrecoverable) errors.

By default, the value is set to the value of the "

port_

pending_rx_number" parameter. A value of ‘0’ means infinite.

Example:

set pp1 port_ignore_on_rx=16

port_retry_on_tx

Numeric

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:

set pp1 port_retry_on_tx=8

port_pending_rx_number

Numeric

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:

set pp1 port_pending_rx_number=128

port_pending_rxtx_number

Numeric

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:

set pp1 port_pending_rxtx_number=128

suspend_msg_on_mac_change

Boolean

To avoid confusion arising from non critical errors during a MAC address change, logging is by default suppressed (default value is "true").

To enable tracing during a MAC address change set this parameter to "false"

Example:

set pp1 suspend_msg_on_mac_change=false
legacy_modeBoolean
set pp1 legacy_mode=true
Info

This parameter is required only if you do not want to allow promiscuous traffic for the VMware adapter/port. In this mode, CHARON-AXP uses legacy MAC address change logic, so use of this option is not desirable.

Thus for ESXi networking configuration:

  • Create the port with e1000 adapter;
  • Enable the promiscuous traffic;
  • Do not use legacy_mode option in Charon's configuration file;
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    Example:

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