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Forum Discussion

Mark_Cloutier's avatar
Mark_Cloutier
Icon for Nimbostratus rankNimbostratus
Apr 15, 2015

vCMP and failover

I am using vCMP for the first time, just purchased two 5250v's to support a migration to Exchange/Lync. Very experienced with LTMs, have used them for almost 16 years now. Basic question, should I ...
application delivery
availability
design
LTM
Steven_J__Willi's avatar
Steven_J__Willi
Icon for Nimbostratus rankNimbostratus
Oct 29, 2015

Why would you not want the vCMP hosts to be able to config sync though? If I make changes to a guest on one vCMP guest, like add a vlan, then I would want that change to sync to the other vCMP guest on the other host in the event of a failover?

 

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Oct 29, 2015
    Steven, even with appliances you have to manually add VLANs to both devices, this is not part of the configsync. So in that case vCMP guests does not mean any extra work. Assign the VLANs to the guest in the host gui (on both hosts) and then assign the self IPs.
  • Steven_J__Willi's avatar
    Steven_J__Willi
    Icon for Nimbostratus rankNimbostratus
    Oct 29, 2015
    Ok that makes sense. Sorry I am just struggling to wrap my head around the vCMP concept. First time dealing with this. In previous situations my companies have just purchased new HA pairs for expansion. How does the networking work for vCMP guests? So they share links with the hosts? Currently I have 1.1 from each host connected into my PCI zone and 1.2 connected to a downstream failover switch for HA. So when I look into the vCMP guest I see interfaces 0.3 and 0.4? What does that mean? Should I be using a HA vlan within the Guests like I would the hosts if vCMP was not configured?
  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Oct 29, 2015
    This post explains the interfaces query, probably better than i could "https://devcentral.f5.com/s/feed/0D51T00006i7Zc7SAE". Hope this helps. And yes to the HA Vlan query.