cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1072
Views
0
Helpful
1
Replies

Cluster Failover

l.waldenberger
Level 1
Level 1

Hi,

is there any possibility to increase HA speed of the two Fabric Interconnects?

In our redunancy tests it took about 100 seconds to switch the subordinate to the primary - during this time the cluster management ip adress won't work.

is there a hidden/undocumented command to decrease the time between the checks?

Or how do you perform these tasks?

1 Reply 1

David McFarland
Cisco Employee
Cisco Employee

If this is with respect to UCS, switchover between the primary and secondary UCS 6120 will result in a control plane outage. The time for the control plane to recover is a funtion of the size of the managed environment. It will take longer with more managed devices.

Control plane failover affects the ability to perform active management of the UCS. It does not affect the data plane.

Unless, there is an actual switch reload or total failure. Then the data plane switch over can take several seconds. Impact to hosts will depend on whether A-B, B-A HA is configured, or the NIC teaming, or, if SAN dual fabric with multipathing is configured.

In short, there are no commands available to decrease the UCS managment recovery time.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: