Okay, thanks to some help from the list, I’ve configured a transparent bridge
running fq_codel which works for multiple subnet traffic. Here’s my setup:
Machine A ——— 192.168.10.200 — — bridge fq_codel machine B —— laptop C
192.168.10.150
Machine D ——— 192.168.3.50 — —|
On Machine A:
straight gigE interface 192.168.10.200
Bridge Machine B: enp3s0 mgmt interface
enp2s0 bridge interface 1
enp1s0 bridge interface 2
br0 bridge for 1 and 2
# The loopback network interface
auto lo br0
iface lo inet loopback
# The primary network interface
allow-hotplug enp3s0
iface enp3s0 inet static
address 172.16.0.5/24
gateway 172.16.0.5
dns-nameservers 8.8.8.8
iface enp1s0 inet manual
tc qdisc add dev enp1s0 root fq_codel
iface enp2s0 inet manual
tc qdisc add dev enp2s0 root fq_codel
# Bridge setup
iface br0 inet static
bridge_ports enp1s0 enp2s0
address 192.168.3.75
broadcast 192.168.3.255
netmask 255.255.255.0
gateway 192.168.3
note: I still have to run this command later, will troubleshoot at some point
(unless you have suggestions to make it work):
tc qdisc add dev enp1s0 root fq_codel
To start, my pings from Machine A to Laptop C were around 0.75 msec, then I
flooded the link from Machine A to Laptop C using:
dd if=/dev/urandom | ssh user@192.168.10.150 dd of=/dev/null
Then my pings went up to around 170 msec. Once I enabled fq_codel on the bridge
machine B, my pings dropped to around 10 msec.
Hope this helps someone else working on a similar setup.
- Dev
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