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? Answer No. RSTP BPDUs are never tagged irrespective of the port type(access/trunk). Because RSTP BPDUs on being received by a bridge are sent … Read more
I’m looking to create a test environment for STP / RSTP. I eventually came by this post that suggested using namespaces. It seemed like that was exactly what I’d wanted to create the simplest STP environment. I ended up writing a script like this: #!/bin/bash if [ “$EUID” -ne 0 ] then echo “Please run … Read more
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 … Read more
Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 10 years ago. Improve this question We have the following requirements for three Ethernet switches that will be connected together: Allow the switches to connect together to form dynamic, … Read more
I’m looking at moving to colocation and one area being discussed is networking redundancy. I can get a dual feed from a two different datacentre switches configured with Rapid Spanning Tree Protocol to give me an active passive supply. I’m looking at using the Cisco ASA 5505 as a firewall. If I get two and … Read more
We recently purchased some 3Com IntelliJack NJ225 switches: (source: 3com.com) The specification states that they support IEEE 802.1D, and a mandatory part of this standard is support for the rapid spanning tree protocol. However, we quickly realised that we could not safely create loops when connecting these devices together (using the four “front” ports). After … Read more
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 … Read more
Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 6 years ago. Improve this question I recently discovered Windows 7 does support STP upon it’s own Ethernet bridges. https://reggle.wordpress.com/2011/09/03/hidden-feature-in-windows-7-spanning-tree/ Although the feature is barely documented by Microsoft, can … Read more
