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NLB members : mix of VM & physical servers

Understand that to create an MS NLB cluster which have all VMs as
its members, it has to be a multicast NLB plus static ARP entries
to be defined in all switches & uplink switch ports.

We currently have 3 physical Crystal report servers (all of which
also act as print servers) : suppose we P2V'ed only one of them,
can we shut down the P2V'ed physical server & then make this
VM a member of the NLB cluster.  This NLB cluster is an existing
NLB previously with the 3 physical servers in it.

Any special settings needed like setting the NLB to multicast or
special settings on the LAN switches?
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sunhux
Asked:
sunhux
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3 Solutions
 
sunhuxAuthor Commented:
What if I have 2 VMs & 1 physical server?  Can they still be members
of an NLB cluster & do we need to set the NLB as multicast with
static ArP entries set in the switches?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
That is correct, I think we've discussed this before at length.

Cluster MUST be set to Multicast, and you then must assign the Cluster IP Address, against the MAC address, and statically configure the ports for your HOsts and  Physical server nic ports.
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sunhuxAuthor Commented:
Even if in the NLB cluster there's only one VM and the other
being the physical server?

If we have 2 VMs, we've indeed discussed that it needs to be
in multicast with static arp entries defined in the switches
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, we have mixtures of physical and virtual NLB clusters.

All static arps need to be configured, it's not different for virtual or physical machines.
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sunhuxAuthor Commented:
Just 1 last question:

suppose the VM joins the NLB (which has 2 other servers but
they're physical servers, not VMs) successfully & we don't
vMotion the VM to another ESXi host, would it give any
issue (as long as I don't do vMotion) ?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
It would not cause any issues, but if the port changes that the cluster MAC IP Addresses appears on, and it's not statically allocated, the Cluster is not likely to converge.
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