Forum Discussion
BIG-IP : sync-failover device-group sync options
F5 BIG-IP Virtual Edition v11.4.1 (Build 635.0) LTM on ESXi
For a device-group of type sync-failover, the admin browser provides these options :
Automatic Sync
Full Sync
Maximum Incremental Sync Size (KB)
Could someone please explain these options ?
Are syncs on a time-schedule ?
Or are syncs triggered by any change to the primary ? Or exactly what types of changes will trigger a sync ?
Specifically, will a change to a data-group file ( e.g. add/delete a line ) trigger a sync ?
NikhilBEmployee
Automatic Sync - Sync is automatic and not manual. Done almost immediatelly after a change is made
Full Sync - if checked will do a FULL sync and if left unchecked, only an incremental sync
Maximum Incremental Sync Size (KB) - 1024 - if you make more than this default value it goes into FullSync mode. (number is a variable)
support.f5.com has further info on this. Hope this helps for now.
- thanks NikhilB .. what would motivate a full-sync vs an incremental-sync ? are there scenarios where an incremental-sync is not fully reliable ?
ZdendaCirrus
Hi, opening this after some time... I am also curious what would motivate you to select full-sync over incremental-sync?
Yann_DesmarestHi, we forced full-sync over incremental-sync because we get lot of issues with incremental since we are using many iapps. There is a known issue and should have been fixed in latest bigip version.
Automatic Sync - Sync is automatic and not manual. Done almost immediatelly after a change is made
Full Sync - if checked will do a FULL sync and if left unchecked, only an incremental sync
Maximum Incremental Sync Size (KB) - 1024 - if you make more than this default value it goes into FullSync mode. (number is a variable)
support.f5.com has further info on this. Hope this helps for now.
- thanks NikhilB .. what would motivate a full-sync vs an incremental-sync ? are there scenarios where an incremental-sync is not fully reliable ?
- ZdendaHi, opening this after some time... I am also curious what would motivate you to select full-sync over incremental-sync?
- Yann_DesmarestHi, we forced full-sync over incremental-sync because we get lot of issues with incremental since we are using many iapps. There is a known issue and should have been fixed in latest bigip version.
