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Cornuwel
Contributor
Contributor
‎12-16-2010 10:26 AM

"Host has no management network redundancy", but it has !

Hi, I just set up a two hosts HA cluster and I get this warning on both ESX servers.

The hosts DO have management network redundancy : two nics for the service console, plugged to two different switchs (stacked Cisco 3750). I tested it today with the client without a problem (unplugged a cable, watched the alarm, plugged it back, reset the alarm, unplugged the other cable, etc...).

Any idea what could cause this message to show up when it shouldn't ?

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8 Replies
jamesbowling
VMware Employee
VMware Employee
‎12-16-2010 11:41 AM

Have you attempted to restart the management agents?

James B. | Blog: http://www.vSential.com | Twitter: @vSential --- If you found this helpful then please awards helpful or correct points accordingly. Thanks!
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dquintana
Virtuoso
Virtuoso
‎12-16-2010 12:09 PM

Hello Cornuwell

  • First, try with enable a second management portgroup, you can use the vmotion to adquire a second management port.
  • Can you confirm us wich policie for team are you using? route based port id? mac hash? ip hash?
Ing. Diego Quintana - VMware Communities Moderator - Co Founder & CEO at Wetcom Group - vEXPERT From 2010 to 2020- VCP, VSP, VTSP, VAC - Twitter: @daquintana - Blog: http://www.wetcom.com-blog & http://www.diegoquintana.net - Enjoy the vmware communities !!!

Cornuwel
Contributor
Contributor
‎12-16-2010 12:16 PM

I think you might be on the right way. The team policy is set to 'IP hash', but I'm not sure etherchannel is configured on the switchs already.

I'll check this out tomorrow morning (it's 9PM here) and keep you posted.

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khughes
Virtuoso
Virtuoso
‎12-16-2010 02:12 PM

I've seen this a few times, usually its just a bug that for whatever reason it doesn't register as redundant, try putting it in maint mode then taking it out and see if it still shows up as no redundancy.    

-- Kyle "RParker wrote: I guess I was wrong, everything CAN be virtualized "
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AndreTheGiant
Immortal
Immortal
‎12-19-2010 01:49 AM

Thread moved in HA area.

Have you tried to use "reconfigure HA" for each hosts?

Andre

Andrew | http://about.me/amauro | http://vinfrastructure.it/ | @Andrea_Mauro
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Cornuwel
Contributor
Contributor
‎12-19-2010 05:04 AM

Both hosts have been rebooted several times. And HA works fine : we tested it.

The only difference between this setup and the similar others I installed is the 'IP hash' parameter and the lack of etherchannel on the switchs.

Unfortunately, I'm no longer at the client's. I showed him how to change the parameter and he'll tell me the result in a few days.

I'll keep you posted.

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depping
Leadership
Leadership
‎12-19-2010 08:33 AM

You shouldn't be doing IP-Hash without Etherchannels! This can and probably will cause unexpected behavior and may result in issues.

Duncan

Cornuwel
Contributor
Contributor
‎12-19-2010 08:42 AM

Thanks for confirming my hunch. I'll confirm that as soon as the client has time to test it.

Regards,

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