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Active/Active or Active/Standby dual networking

How do you guys handle portgroups with two links? Do you use active/active, active/standby, or just one link? I’ve been told by a vendor that active/active doesn’t actually help anything. Curious on how others handle this. Thanks in advance for your input.


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7 Comments

  1. I use active/active. Both interfaces see traffic however one is utilized more than the other. But I’d prefer that then potentially saturating a link.

    Honestly, if you have the ability, why not use both.

  2. Just found this out today during switch upgrade.

    If Active/Standby and you pull the active cable you lose networking for a few minutes.

    If Active/Active and you pull either cable nothing drops.

    We run Active/Active on our 40GB pair links then set 1GB port as standby for emergency.

  3. standard or distributed vswitch ?

    if standard google for ‚the great vswitch debate‘. I think its from 2009 but standard vswitches didn‘t change much since all the new and fancy stuff was put into distributed vswitches.

    anyway use active-active but read the stuff regarding load balancing.

  4. VSwitch teaming policies are useful- my preferred one is route based on pnic load, but that’s dvs only.

    BUT- you won’t get more than line rate on any given flow. that’s the only way I could see it “not helping anything’ If you’ve got 1Gb, you have 4 1Gb links, you don’t have a 4Gb link, etc.

  5. I use active / active.

    my understanding is that each vm when moved or powered onto a host gets assigned to use a single nic. the assignment is based on whatever nic is being used less. so essentially half the vms will use 1 nic and the other half will use the other nic. in case of a nic failure, they will all go onto the remaining nic without problem or delay.

    i really like multinic vmotioning which really helps out: [https://kb.vmware.com/s/article/2007467](https://kb.vmware.com/s/article/2007467)

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