Tuesday, August 30, 2016

linux networking - Bonding 4 Gigabit ethernet and 2 Fiber SFP+




We received a DL380 with 4 Gigabit Ethernet (normal CAT6), and 2 Fiber SFP+ (HPE 10Gb SR SPF+).
I've successfully managed to bond the 4 Gigabit Ethernet together, and put in place some LACP on our Cisco equipment.



I can succefully bond the 4 Gigabit Ethernet together with the following



auto bond0
iface bond0 inet dhcp
bond-mode 4
bond-primary eno1
bond-slaves eno1 eno2 eno3 eno4

bond-miimon 100
bond-downdelay 400
bond-updelay 800


According to this post it's impossible to add one of the Fiber channel to the bonding group ?
Sadly, the solution provided is... 404



I'm curious if stuff have changed from now ?
Can we bond 1Gb Ethernet with 10GB SFP+ Fiber ?


Answer




Sorry, when you say 'Fibre Channel' do you mean Fibre-Channel or plain old ethernet over fibre? because...they're very different indeed. For a start do your FC SFP+'s actually say 10Gbps? as that's not a valid FC port speed - they go up in 'binary' (1,2,4,8,16,32 etc.) not 'decimal' like Ethernet (1,10,100,1000,10000,100000 etc.) - it'll be printed on the actual SFP+. Also what make/model of 'Fibre-channel' adapter does it have?



Although technically you can do IP-over-FC (I know, I did it once, painful) nobody does, FC and Ethernet are very different protocols and while some switches (Cisco Nexus for one) allow you to plug FC SFP/SFP+'s into their unified ports to allow for downstream conversion to FCoE at no time does the FC port 'talk' Ethernet.


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