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VxRail 4.7.526 Network Failover (nic default ports)
We are testing network resiliency/failover and are seeing some unusual side effects when taking down our odd side network connection, more specifically when that network comes back up we drop connection/connectivity for over a minute. I believe in some instances we are even seeing vSAN complaining. We are only seeing this when we reboot the odd network side, the even side doesn't cause this issue. Does the VxRail servers default to 1 pair of nics odd vs even? And if so should we be seeing such a lengthy down connectivity state when the odd side comes back up?
We have four 10G links, 1/3 to odd cisco 9k and 2/4 to even cisco 9k.
VxRail P570F
VxRail 4.7.526
6.7.0 Update 3 Patch 132 (build-17167734) Kernel 6.7.0 (x86_64)
Description:
Ethernet 10G 4P X710 SFP+ rNDC
ryaninclt
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April 20th, 2021 10:00
Well I imagine the failover is because of the settings set in Teaming and Failover:
Load Balancing Route based on originating virtual port
Network failure detection Link status only
And then the failover order will be what it comes back to when that uplink is back up. uplink1 on the odd side, uplink2 on even etc. or because it is Route based on originating virtual port would it even matter what is the active and standby link?
Should these settings be modified, perhaps beacon probing to detect that the network is fully up before switching?
As stated before when shutting down the network on the odd side, there is no noticeable loss, perhaps one packet drop, but switching back to the odd side after the switch is back up, it is down for a minute or so.
DELL-Sam L
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April 20th, 2021 16:00
Hello ryaninclt,
Have you followed the steps list on page 88 of this guide?
https://dell.to/3gvZ3yj