Forum Discussion
NimbostratusHA Failover between two Datacenters
I currently have three Host Load Balancers with LTM Guest, with GSLB.
In datacenter 1 is two Host standalone w/two Guest in HA Failover / Synchronization - GSLB.
In datacenter 2 is one Host standalone w/one Guest in standalone - GSLB.
I am creating another set of three Guest for application isolation, two in datacenter 1 and one in datacenter 2, with no GSLB, due to application limitations of not using FQDN.
Is if feasible to create a HA Failover/Synchronization between three Guest, even though they are in separate datacenters (450 miles apart).
If so, what are some precautions that I should be aware of?
Regards,
Larry
2 Replies
- Aswin_mk
MVP
Hello,
I suggest first to Measure RTT and packet loss between DCs. Aim for very low packet loss and stable latency. If latency is high/variable, do not rely on connection mirroring or DSC state sync for session continuity.
BR
Aswin - zamroni777
if the app doesnt have fqdn, you can use Route Health Injection.
basically, both DCs use same vip for the vservers of the app and the vip is advertised to ospf/bgp.
routing network will select best dc.
