💻 Proxmox VE Course II-A-6. Network Settings: Recommendation for Using VirtIO (Virtualization Driver)

 

🌐 The Determinant of VM Communication Performance: Guide to #NetworkSettings and #VirtIO #Optimization

Through the previous #lectures, we have #completed the #disk and #CPU/#Memory #settings required for #VMCreation in #ProxmoxVE

Now, we move to the #Network #Settings #stage, a #critical #step where the #VirtualMachine (#VM) #communicates with the #external #network and #secures #high-#speed #data #transfer #performance

Especially in a #virtualization #environment, to #maximize #network #performance, the #driver #type must be #carefully #selected, and #VirtIO is the #most #recommended #option

This #post will #detail the #selection of #bridges, the #management of #MACAddress, and the #reasons why #VirtIO is the #most #efficient choice among #various #network #driver #types, along with the #configuration #method, in the #Network #tab of the #VM #Creation #Wizard

1. #Accessing the #Network #Tab and #Key #Settings #Items



This is one of the final stages of the VM Creation Wizard.

A. #Key #Settings #Items in the #Network #Tab

  1. #Bridge: #Select the #physical #network #interface to which the #VM will #connect

  2. #Model (#Driver #Type): #Select the #type of #virtual #network #card to be #used by the #VM

  3. #MAC #Address: #Set the #unique #MAC #address of the #VM

  4. #VLAN #Tag (#Advanced #Setting): #Specify the #tag #number when #using a #VLAN #environment

B. #Bridge #Selection #Guide

  • #vmbr0 (#Default #Bridge): This is the #default #network #bridge #automatically #created during #ProxmoxVE #installation

    #Most #VMs are #connected to #this #bridge for #Internet #access

  • #Additional #Bridges: If #internal #network #separation or #special #network #configuration is #required, #other #pre-#created #bridges can be #selected

2. #Comparison of #Virtualization #Driver #Types (#Model)



The #network #performance of the #VM is #determined by the #driver #type #selected.

A. #Emulated #Drivers (E1000, Realtek)

  • #Features: This #method #imitates #hardware #in #software

    It has #high #universality because #no #additional #driver #installation is #required in the #guest #OS

  • #Disadvantages: The #processing #is #complex, so #performance is #slow, and #CPU #usage is #high (#primarily #used for #older #OS such as #Windows #XP)

B. #Paravirtualization #Driver (#VirtIO)

  • #Features: A #driver #designed to #allow the #guest #OS to #recognize the #virtualization #environment and #communicate #directly with the #host

    It was #specially #developed for #optimal #performance in a #virtualization #environment

  • #Advantages: #CPU #overhead is #low, and the #transfer #speed is #very #fast, #close to that of a #physical #server (#Key to #VM #performance #optimization)

3. #Recommendation for #VirtIO #Utilization and #Installation #Notes



If #performance is the #top #priority, you #must #select the #VirtIO #network #driver in the #Model #setting.

A. #Conditions for #Using #VirtIO

  • #Linux: #Latest #Linux #kernel #versions #include the #VirtIO #driver #by #default, so it is #automatically #recognized just by #setting it

  • #Windows: For #Windows #OS, an #additional #VirtIO #driver #disk #provided by #Red #Hat #must be #loaded during the #installation #process for the #network to be #recognized

    (#Loading the #VirtIO #driver is #one of the #most #common #causes of #errors during #Windows #installation)

B. #Multiqueue #Activation (#Advanced #Option)

  • #Activating the #Multi-#Queue #setting can #further #enhance #performance in a #multi-#core #environment by #using #multiple #queues for #network #traffic #processing

    This is #useful for #servers that #require #high #bandwidth

4. #MAC #Address #Management and #VLAN #Utilization #Tips



A. #MAC #Address #Setting

  • If the #MAC #Address #field is #left #empty, #Proxmox #automatically #assigns a #unique #address

    #Using #automatic #assignment is #more #convenient for #management unless there is a #special #reason

B. #VLAN #Tag #Utilization

  • #VLAN is #used when you #operate a #large #number of #VMs and #want to #logically #separate the #networks

    It #will #only #work #correctly if the #VLAN #tag has been #pre-#configured on the #physical #switch of the #host #server

#Once the #network #settings #step is #complete, you have #finished #all the #main #settings in the #VM #creation #wizard

#Click the #Next #button to #move to the #final #step, the #Confirm #tab

ProxmoxVE, NetworkSettings, VirtIO, Virtualization, VMPerformance, NetworkDriver, MACAddress, VLAN, vmbr0, MultiQueue

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