Last week, I ran Spanning Tree Protocol (STP) in Linux kernel successfully.
Now, I am trying to support Rapid Spanning Tree Protocol (RSTP) in Linux kernel.
I also found out some solutions in user space such as mstp (https://github.com/mstpd/mstpd). However, I want to find a solution in the kernel.
I searched patch from internet but I can't find anything. Is there any limitation that Linux kernel is not able to support RSTP?
I tried to figure out how to setup RSTP on Linux with VLANs and bridges involved and now am completely confused.
I am trying to bridge three interfaces, two of which are supposed to act as trunk (hdlc0 and hdlc1) and one is supposed to act as access port (eth0). I also need to enable RSTP on each interface included in bridge, but with the configuration listed below RSTP packets are sent via hdlc0 and hdlc1 tagged (!) so other devices rejects them. As Linux has no concept of 'native vlan', I have no idea how to fix it.
Here's my configuration:
ifconfig eth0 up
ifconfig hdlc0 up
ifconfig hdlc1 up
vconfig add hdlc0 42
vconfig add hdlc1 42
ifconfig hdlc0.42 up
ifconfig hdlc1.42 up
brctl addbr br1
brctl addif br1 eth0
brctl addif br1 hdlc0.42
brctl addif br1 hdlc1.42
ifconfig br1 up
brctl stp br1 on
Another question: I also wonder how to configure RSTP in scenarios where I have multiple bridges: say eth0 is trunk with vlan 42-42 allowed, vlan 42 is supposed to pass via hdlc0 and vlan 43 is supposed to go via hdlc1, so I have two bridges. If i enable RSTP on both bridges it will (probably) run independently on each bridge so I'll face problems soon?
RSTP(Rapid Spanning Tree) is configured on a bridge. All ports of this bridge are "trunk" ports and are part of vlan “x”. Will the BPDUs sent out of this bridge be tagged?