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Forum Discussion

Stefan_Klotz's avatar
Stefan_Klotz
Icon for Cumulonimbus rankCumulonimbus
May 09, 2014

Force to standby with HA Group

Hi there,   we have a LTM 4000s with version 11.4.1 HF3 and two LACP channels (each with 2 interfaces), one dedicated for heartbeat/sync/mirroring and the other as trunk with all the productive VL...
application delivery
design
ha networking
LTM
Kevin_K_51432's avatar
Kevin_K_51432
Historic F5 Account
May 09, 2014

Hi Stefan, The scoring / failover aspects of clustering can get complicated. This bug could be one possibility:

 

http://support.f5.com/kb/en-us/solutions/public/14000/100/sol14155.html?sr=37247153

 

Also, I see a warning in the manual section "What is an HA group?" which states that you must ensure this is configured on both devices. This tells me that the feature doesn't sync and that perhaps some customers are overlooking this? There also appears to be quite a bit of good information for understanding scoring in general:

 

https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-device-service-clustering-admin-11-5-0/8.html?sr=37247045

 

Hope this offers some help.

 

Kevin