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GDC1-TRG-F5's avatar
GDC1-TRG-F5
Icon for Nimbostratus rankNimbostratus
Jun 23, 2024

HA Sync issue on Active-Active Cluster

One of the peer shows the error "Does not have the last synced configuration, and has changes pending"   We tried syncing manually and the same error persists.  As verified, NTP is in sync and the...
application delivery
security
Mohamed_Ahmed_Kansoh's avatar
Mohamed_Ahmed_Kansoh
Icon for MVP rankMVP
Jun 23, 2024

Hi , 
First >>> It's recommended to configure a separate VLAN for HA with considering an aggregate link between both of devices specially in Active-Active scenario , as any failures could make a device to handle more traffic than it afford. 

For your issue, please check the MTU in in your HA VLANS it could make such these issues. 
Please have a look in this article: https://my.f5.com/manage/s/article/K13946

to troubleshoot in MTU issues , you can use Packet capture on HA VLAN or a traceroute utility in BIGIP Linux shell , you can see if there is an error in fragmentation in the HA VLAN path between both of BIGIPs.