BR_PORT_BITS - limit of bridges

Alibek

Member
Jan 13, 2017
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Hi!

Linux kernel have default hardcoded parameter BR_PORT_BITS = 10. This param limit max bridges to 1024 (2^10 = 1024).
In some cases need increase this param - for example qty containers over 1024 - big lxc containers with nested dockers containers.

I know BR_PORT_BITS limit is inspired by limitation of STP protocol, but i think this limit not is valid for current real cases (for example I use 'bridge_stp off' on all pve-hosts, and STP control is assigned to the switches).
Moving on openvswitch doesn't solve problem with dockers in lxc.

I think the limit of BR_PORTS_BITS needs replace from hardcoded to manage by sysctl
Proxmox team, how about made this in pve-kernels?
 
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