[one-users] any software tools can help to visualize the physical and virtual network components?

[Qiubo Su (David Su)]

Dear OpenNebula Community,

I set up the Cloud computing platform and Virtual LAN in one dedicated
server (Linux) a long time ago.

Is there any way (i.e. installing some software tools or running some
commands etc.) that can help to visualize the network (either physical or
virtual network) components (i.e. interface, bridge, VLAN etc.) and their
relationship (e.g. a detailed diagram)?

This will help to analyse the networking traffic flow, firewall security
etc.

Thanks,
Q.S.
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