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Forum Discussion

Martin_Vlasko's avatar
Martin_Vlasko
Icon for Altocumulus rankAltocumulus
Dec 18, 2017

Load balance to node in the same DC where VIP is active

Hi,   We have following (simplified) scenario:   Two data centers: DC1, DC2.   Two F5 LTMs, one LTM in each DC, they run in active/standby mode and have one VIP configured.   Two applicat...
application delivery
irule
iRules
location awarness
LTM
Farshad_249798's avatar
Farshad_249798
Icon for Cirrus rankCirrus
Dec 18, 2017

You need to track a unique local id somehow and then use irule to select pool member based on that id. Haven’t tested this but I would use tcl_platform(machine) to get hostname assuming they are different.

 

Martin_Vlasko's avatar
Martin_Vlasko
Icon for Altocumulus rankAltocumulus
Dec 21, 2017

Thanks for the tip with the RULE_INIT. Out of curiosity, why would the DC interconnect link latency matter in this exact situation? The irule should actually keep the traffic within a single DC.