Forum Discussion

commsmonkey_172's avatar
commsmonkey_172
Icon for Nimbostratus rankNimbostratus
Aug 08, 2010

Order of precedence Network Wildcard VS or Forwarding network VS

Hi all,

 

 

Say I have a packet entering my LTM to destination 10.1.1.1:80

 

Which of these 2 would take precedence and why:

 

 

 

VS1

 

Network Wildcard VS

 

eg. Destination 10.1.1.* Netmask 255.255.255.255

 

 

or

 

 

VS2

 

Forwarding network VS

 

eg. Destination 10.1.1.0:80 Netmask 255.255.255.0

 

 

Is order of implementation/creation an important factor in determining this?

 

 

Cheers,

 

 

Comms

 

config
design

1 Reply

Sort By
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Aug 09, 2010
    The most specific VS will be the one that matches the traffic irrespective of the order of creation or listing in the bigip.conf. Here is the order of precedence:

     

     

    Host:port specific VS: 1.1.1.1:80

     

    Host specific VS: 1.1.1.1:0

     

    Port specific network VS: 1.1.1.0/24:80

     

    Network VS: 1.1.1.0/24:0

     

    Port specific wildcard VS: 0.0.0.0:80

     

    Wildcard VS: 0.0.0.0:0

     

     

    Here are a few related solutions:

     

     

    SOL6459: Change in Behavior: Order of precedence for virtual server matching

     

    https://support.f5.com/kb/en-us/solutions/public/6000/400/sol6459.html

     

     

    SOL9038: The order of precedence for local traffic object listeners

     

    https://support.f5.com/kb/en-us/solutions/public/9000/000/sol9038.html

     

     

    Aaron