03. Network Configuration - bridged networks

I haven't progressed much further, but to the looks of it there is no example for a bridged network setup.
While it's not that hard to figure out, the ever-changing methods of configuring interfaces and bridges are sometimes getting to me. Here is what worked:
- Get the current configuration:
nmcli con show
- Add a bridge named "bridge0":
sudo nmcli con add ifname bridge0 type bridge con-name bridge0
- Add the Ethernet port ("eno1" in my case) as a slave to the bridge:
sudo nmcli con add type bridge-slave ifname eno1 master bridge0
Optional - disable STP:
sudo nmcli con modify bridge0 bridge.stp no
- Review the configuration:
nmcli con show
nmcli -f bridge con show bridge0
- Here comes the trick. One has to turn OFF the (default) Ethernet connection (in my case it was the "Wired connection 1", then turn on the bridge interface:
sudo nmcli con down "Wired connection 1"
sudo nmcli con up bridge0
- Let's check it:
nmcli con show
As to step 5, I always thought that systemctl restart networking.service
would do the job, but it doesn't.
Hope it's useful.
Comments
-
In Chapter 3 the intention is to understand what a bridge is and that all the traffic is seen on all the segments. The example shows a physical bridge. Your example is a virtual bridge, a very handy construct but not at this part of the class.
In your example , if you find the Network Manager keeps re-configuring the nic use the nmcli option to "unmanage" the nic.
Thank you for the input. Lee
1 -
Thanks for the input, Lee, and the advice on "unmanage".
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