Forum Discussion
Zen_Y
Nimbostratus
NimbostratusWhat will be happen to live and existing connections when failover HA BIG IP active-standby
Good morning
I have a little question, when we create HA configuration with active-standby mode, with Mac Masquerade configuration. What will be happen to live and existing connections? They will be disrupted when we do failover? or will the network device immediately find the standby device that has the same masquerade mac and floating ip without any timeout process first?
Thank you
akonuEmployee
Zen_Y .
To maintain active connections when a failover occurs, you will need to configure connection mirroring.I found some information that could help answer your questions on our myf5 portal, please click on the links below .
K84303332: Overview of connection and persistence mirroring (13.x - 16.x)
https://my.f5.com/manage/s/article/K84303332
Manual Chapter : Managing Connection Mirroring
https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-device-service-clustering-admin-11-5-0/9.html
On the other hand MAC masquerade optimizes the flow of traffic during failover events
K13502: Configuring MAC masquerade (11.x - 17.x)
https://my.f5.com/manage/s/article/K13502.I hope this helps.
- Zen_Y
Hi akonu
This is interesting, I have read several articles about mirroring connections, but in the implementation in reality, I have not implemented this. Is there any information about the impact of this implementation? such as increasing cpu, memory, network load or even certain bugs that must be avoided on both active and standby devices?
And when we do not implement a mirroring connection, will the existing connection time out before it finds a new active device?