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Note

On Red Hat Enterprise Linux 6 & 7 and CentOS 7, the following packages are needed:

  • bridge-utils - optional
  • tunctl - optional, need only if command 'ip tuntap' not worked
  • ethtool - mandatory
  • vconfig - optional, if VLAN is needed

On Red Hat Enterprise Linux 8 and CentOS 8, the following packages is needed:

  • ethtool - mandatory

Using "ncu" utility to establish CHARON virtual network

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# ncu

CHARON Network Configuration Utility,  Version 1.6. Copyright STROMASYS (Cc) 2014-20192020 STROMASYSVersion SA1. 7

Interfaces Dedicated to State
---------- ------------ -----
eth0 host connected to host
eth1 host disconnected from host
lo host unmanaged from host
=================================================================
bridge name bridge id STP enabled interfaces
========================== VLAN =================================
=================================================================
select action:
1 - Dedicate to CHARON
2 - Release to host
3 - Create Bridge with TAPs
4 - Remove Bridge
5 - Add VLAN
6 - Remove VLAN
7 - Print status
8 - Exit

:> 3

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Virtual interface creation

The creation of the desired number of virtual network interfaces (TAPs) can be performed in the following way:

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# tunctl [-t tap<N>]

where “tap<N>” is a name of an instance of the virtual network interface, i.e. “tap0”, “tap1” etc.

Once each virtual network interface instance is created it must be set to promiscuous mode:

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Usage of the virtual interface in CHARON-AXP configuration

Once the “tap<N>” interfaces have been created, the load command maps those interfaces to CHARON-AXP:

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load tap_port/chnetwrk XQA0 interface="tap<N>"

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