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Forum Discussion

fubarSUSHI's avatar
fubarSUSHI
Icon for Altocumulus rankAltocumulus
Apr 06, 2014

Design question #2: Active-Standby pair in two different data centers

The question that got brought up is if a LTM pair (two devices paired) can be in two different data centers with a point to point 100mb line in between?   The request imho is "network-wise" not ...
application delivery
deployment
design
LTM
What_Lies_Bene1's avatar
What_Lies_Bene1
Icon for Cirrostratus rankCirrostratus
Apr 06, 2014

A few things;

 

1) I think the failover heartbeat is 1 per second and failover occurs if there are three 'lost' probes in a row. So, latency would need to be very high for this to be an issue. Network failover should work fine over very long distances.

 

2) Don't forget VXLAN is supported on the box.

 

3) Note, as far as I'm aware, failover doesn't require L2 adjacency, it's unicast UDP so should work fine if it's routed between devices.

 

4) I'd agree it's not ideal to split an active and standby in this way.