Duplex/Aggregate 2 10GB ports

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Rasherz
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Duplex/Aggregate 2 10GB ports

Postby Rasherz » 11 Feb 2016, 04:01

Hi,

Does anyone know if it's possible to duplex/aggregate 2 10GB Fibre ports to give 20GB throughput.
I currently use Linkagg & LACP to give failover but would like to offer 20GB capacity to certain servers.

Thanks 8)
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devnull
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Re: Duplex/Aggregate 2 10GB ports

Postby devnull » 12 Feb 2016, 08:26

Linkagg does not only give failover but additional bandwidth as well, but you need to be aware, that a single Connection (e.g. a flow between a backupserver and a storage) will only take one of the lacp links, hence has a bandwidth of 10G (link). If you have multiple flows using the lacp you can expect a even distribution using both links.
If you need more bandwidth for a single connection you have to switch to 40G.

But this applies to all vendors (afaik except Brocade VCS http://blog.ipspace.net/2011/04/brocade ... rfect.html) and does not apply to servers.

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Rasherz
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Joined: 04 Dec 2008, 03:06

Re: Duplex/Aggregate 2 10GB ports

Postby Rasherz » 12 Feb 2016, 10:24

Perfect, that's pretty much what I thought. We have 40GB ports but not enough.... (yet)
____________________________________________
Time is what we want most, but what we use worst.

devnull
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Re: Duplex/Aggregate 2 10GB ports

Postby devnull » 12 Feb 2016, 13:04

yes.. 100 flows over the lacp will easy max out your 20 Gbit.
A single connection will never get more than 10Gbit.
-> distribution depends on the hashing algorithm afaik 6900/10k use source/destination IP/port while the 6850 probably use source destination mac


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