Virtual VS Virtual-Address

Question

Hi Experts,
Can anyone please guide me what is the different between the Virtual and Virtual address?
I understand that using 'virtual' we define a VIP and other associated parameters. Why would anyone want to define just a virtual address using 'virtual-address' command? What's the use of 'virtual-address'?
user@(ltm-02)(cfg-sync In Sync)(Active)(/Common)(tmos) create ltm virtual
Components:
  virtual           virtual-address  
user@(ltm-02)(cfg-sync In Sync)(Active)(/Common)(tmos) create ltm virtual

jaikumar_f5 · Answer

virtual -&gt; This is the Virtual Server (VS) which you create with a name followed by destination of IP:PORT, assigning pool, profiles, etc.
virtual-address -&gt; This is the part of VIP settings, where you can name a VIP and then use that name to create a VS (Similar to node creation with name &amp; use that name in the pool member creation).
(tmos) create ltm virtual-address test-virtual-address-name address 21.21.21.12
(tmos) create ltm virtual dummy_virtual-address destination test-virtual-address-name:80
(tmos) list ltm vi
Components:
  virtual           virtual-address
(tmos) list ltm virtual dummy_virtual-address
ltm virtual dummy_virtual-address {
    destination test-virtual-address-name:http
    mask 255.255.255.255
    profiles {
        fastL4 { }
    }
    source 0.0.0.0/0
    vs-index 234715
}

Modify the other properties of address too (icmp, traffic group), lets say you have 10VS (1.1.1.1:80,1.1.1.1:443,1.1.1.1:53 etc) on the same Vip(1.1.1.1) address, you can modify the vip-address to reflect the changes on the all 10VS.

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Virtual VS Virtual-Address

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