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Thin Client and Virtual Machines Thread, Xencenter 5.5 wow in Technical; Don't know whether this is any use to anyone. Might have already been posted....
  1. #16
    AJT1's Avatar
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    Don't know whether this is any use to anyone. Might have already been posted.

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    @cookie_monster the default bonding mode is bonding-slb (mode 7) which I've struggled to find much on. What I have read (most of it is on the Citrix Xen Forums!) is that it doesn't require any switch support. According to XenServer Documentation traffic will only be going out over a single interface at a time so hopefully no problems will occur!

    Hmm I wonder how they prevent mac flapping, I suppose if it only sends on one link at a time then it could be avoided but it still must confuse the switch. If traffic is only going out on one link at a time then the bond must be about redundancy rather than throughput.

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    @cookie_monster: I've just double-checked and I was telling you lies. The LACP is the SAN stuff, the XenServer boxes have no special config.

    I think that the reason it works, is because each VM can only use one NIC at a time. XenServer presents the virtual NIC's MAC to the network and all is well. The balancing of the load across NICs is redone every few seconds.

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    Ok cheers looks like i'm all set to go then

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