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Groups > linux.debian.user > #200940

[SOLVED] Re: dual port cross over cable bonding

From Adam Weremczuk <adamw@matrixscience.com>
Newsgroups linux.debian.user
Subject [SOLVED] Re: dual port cross over cable bonding
Date 2018-10-05 17:50 +0200
Message-ID <wFAwx-3fG-1@gated-at.bofh.it> (permalink)
References <wFzqN-2E2-1@gated-at.bofh.it> <wFA3w-363-13@gated-at.bofh.it>
Organization Matrix Science Ltd

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A single dual port gigabit card on each server.

I'm more concerned about performance than redundancy.

The bond operates in 2 gigabit mode:

ethtool bond1
(...)
     Speed: 2000Mb/s
     Duplex: Full
(...)

My working config (will play with it a bit more):

auto bond1
iface bond1 inet static
     slaves ens1f0 ens1f1
     address 192.168.200.1
     netmask 255.255.255.252
     bond_miimon 100
     bond_mode balance-rr
     bond_xmit_hash_policy layer3+4

I've done a simple some performance test - copied a file over ssh (which 
adds own overhead).

90-100 MB/s over a single link and 150-160MB/s over a dual bond

So it's definitely working and making a substantial difference.

Unplugging one cable doesn't break the transfer; speed temporarily 
decreases but then goes up again after cable is reinserted.


On 05/10/18 16:01, Dan Purgert wrote:
> Are these "just" 10/100 cards?  I mean, if they're gbit capable,
> crossover cables violate the spec, and you're limiting them to 100m
> only...
>

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Thread

dual port cross over cable bonding Adam Weremczuk <adamw@matrixscience.com> - 2018-10-05 16:40 +0200
  Re: dual port cross over cable bonding Dan Ritter <dsr@randomstring.org> - 2018-10-05 16:50 +0200
    Re: dual port cross over cable bonding Dan Ritter <dsr@randomstring.org> - 2018-10-05 16:50 +0200
      [SOLVED] Re: dual port cross over cable bonding Adam Weremczuk <adamw@matrixscience.com> - 2018-10-05 17:20 +0200
  Re: dual port cross over cable bonding Dan Ritter <dsr@randomstring.org> - 2018-10-05 16:50 +0200
    Re: dual port cross over cable bonding Adam Weremczuk <adamw@matrixscience.com> - 2018-10-05 17:10 +0200
  Re: dual port cross over cable bonding Reco <recoverym4n@enotuniq.net> - 2018-10-05 17:20 +0200
  Re: dual port cross over cable bonding Dan Purgert <dan@djph.net> - 2018-10-05 17:20 +0200
    [SOLVED] Re: dual port cross over cable bonding Adam Weremczuk <adamw@matrixscience.com> - 2018-10-05 17:50 +0200

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