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Reboot ESXi host causes vlan flapping on J4903A Switch 2824 Software I.10.70

fcocquyt
Occasional Contributor

Reboot ESXi host causes vlan flapping on J4903A Switch 2824 Software I.10.70

Hi, we are experiencing a strange 100% reproducible issue.

 

When we reboot a VMware ESXi 5 host, and as it comes back on the network, we are seeing one of our older feed switches:

 

ProCurve J4903A Switch 2824
Software revision I.10.70

 

log a lot of "VLANXYZ virtual LAN enabled" (for 6-7 different vlans)

 

At the same time, we have 4 NTI Enviromux devices which drop off the network until the vlan messages stop

 

Anyone seen this behaviour before?

 

Any ideas how to debug?

 

thanks!

1 REPLY
fcocquyt
Occasional Contributor

Re: Reboot ESXi host causes vlan flapping on J4903A Switch 2824 Software I.10.70

We determined the root cause - I wrote up the solution here:

 

http://www.vmadmin.info/2012/04/esxi-reboot-causes-arp-flood.html

 

thanks