Forum Discussion

Piotr_Lewandows's avatar
Piotr_Lewandows
Icon for Altostratus rankAltostratus
Apr 20, 2015

Cookie persistence and source address fallback

I wonder what will be result of such setup:   LB set to Round Robin Default Persistence Profile: Cookie (Cookie Insert) Fallback Persistence Profile: Source Address Source IP same for all requ...
application delivery
deployment
design
LTM
performance
TMOS
  • Richard__Harlan's avatar
    Richard__Harlan
    Apr 20, 2015

    You are correct when putting Cookie and Source Persist together. If there is a persist record it will go to that server and cluster all the clients that share the same IP to the same server.

     

Richard__Harlan's avatar
Richard__Harlan
Historic F5 Account
Apr 20, 2015

You are correct when putting Cookie and Source Persist together. If there is a persist record it will go to that server and cluster all the clients that share the same IP to the same server.

 

  • dragonflymr's avatar
    dragonflymr
    Icon for Cirrostratus rankCirrostratus
    Apr 20, 2015
    Thanks, good to have confirmation from experienced F5'ers Piotr
  • gsharri's avatar
    gsharri
    Icon for Altostratus rankAltostratus
    Apr 20, 2015
    Piotr, If the clients have a persistence cookie then the source address records will not be used. LTM will attempt to match clients with no cookie with a source address persistence record and then insert a cookie into the response. Note that the source addr persistence record will be created using the client-side source address not the server-side snat source addr.
  • keshav_163381's avatar
    keshav_163381
    Icon for Nimbostratus rankNimbostratus
    Mar 28, 2016
    Yes....Because Persistence table check first before doing the SNAT on egress interface