Re: [Xen-API] XCP 1.1 DDK for OVS Build

[brooks@xxxxxxxxxxx]

So many threads never get closure I wanted to send a quick follow up.

OVS 1.3 compiled, installed and functions as advertised.  If the bond is 
put into active-backup it will only listen on one interface.  That helped 
us track down another issue we were seeing where the VM VLAN traffic 
wasn't being passed to the VMs.  That turned out to be a problem with the 
BMC sharing one of the Ethernet ports.  For some reason the driver for the 
BMC or for the Broadcom chipset is munging the VLAN packets, untagged 
packets are passed up the stack without any issue, but tagged packets are 
being munged.  Since I have a working XCP 1.1 DDK I was able to download 
the latest Broadcom driver and compile and install it.  Unfortunately it 
didn't help.  The only resolution was to install a PCIe card and move the 
VM VLAN traffic.  OVS 1.3 also allowed us to track down and resolve a 
problem we were seeing with ARP/MAC table convergence which was causing us 
to see traffic instability for a long period of time (~5 minutes) when 
moving a VM from one compute node to another, or when the switching the 
active interface on the bond associated with VM traffic.  OVS 1.3 is a 
nice improvement to the 1.0.2 code shipped with XCP 1.1 and I would highly 
recommend it if you're seeing any strange behavior with your active-backup 
bonds in XCP 1.1.
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