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 Etherchannel Boost Up Bandwidth??
Author: naruto_norm 
Date:   16-02-07 08:27


I would like to ask about etherchannel in Freebsd. Is it can boost up our bandwidth by combining 2 physical NICs to become one virtual NIC??

FYI, I've done a few series of testing to prove it but the outcome is different. It just make redundancy and never boost up the bandwidth.

I'm using Intel(R) PRO/1000 Network Connection (em) NICs, and restrict it to allow 100baseTX for each NICs. So theoretically if we combine 2x 100Mb NICs, we should get about 200Mb bandwidth right. But I'm only get about 111Mb by using iperf.

Here is some of my testing info:

I'm using command to create etherchannel and 2 freebsd machine with the same configuration except IP address ( &

#ngctl mkpeer fec dummy fec
#ngctl msg fec0: add_iface '"em0"'
#ngctl msg fec0: add_iface '"em0"'
#ngctl msg fec0: set_mode_inet
#ifconfig fec0 promisc
#ifconfig em0 promisc
#ifconfig em1 promisc
#ifconfig fec0 inet netmask // for other machine, ip addr is
#ifconfig fec0 up

Could someone help me to clarify this. Thanking you in advance. ;)

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