MikroTik Switching - Spanning Tree Protocol
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- Understand the broadcast storm problem in a redundant switching network in case STP is not used
- Understand the multiple frames copies problem in a redundant switching network in case STP is not used
- Understand the MAC address table instability in a redundant switching network in case STP is not used
- Understand how the root bridge is being elected
- Understand what is BPDU and its role in electing the root bridge
- Understand what is the bridge ID
- Understand how to change the priority in the bridge ID to change the selection of the root bridge
- Understand the port roles: Designated, Root Port, Alternate, Disabled
- Understand the port states: Listening, Learning, Forwarding, Blocking
- Understand what the root path is and how to use it
- Understand what is the port Auto-Isolate
- Understand what is the port Restricted-Role
- Understand what is the port Restricted-TCN
- Understand what is BPDU-guard
- Understand what is Topology Change Notification (TCN)
- Understand how Rapid Spanning-Tree works
- Understand what is the edge port
- Uderstand the Negotiation mechanism in RSTP
- Understand the edge and Point-to-Point ports
- Understand the Region and Instances in MST
- Have a basic networking skills
- Understand the TCP/IP protocol
- Have some hands-on on MikroTik products and Winbox tool
This is the first course in the market discussing about switching in MikroTik. Since RouterOS version 6.41 and above, MikroTik has very reliable Switching features that you can profit from: One of the feature is the Spanning-Tree Protocol.
Spanning-Tree Protocol (STP) help your redundant switching networks to avoid having loops and to wok efficiently. Without STP your network would end up not working. In this course, I am going to discuss in details how STP works and what are its features, also I am going to discuss about the RSTP and the MSTP (MSTP is only available on RouterOS version 6.41+).
To be able to do the LABS in this course, you need 3 MikroTik routerboards having a switch chip, or you can use MikroTik CRS models. You also need 2 end devices such as PC's.
I look forward to see you in my course.
- Engineers who would like to upgrade their knowledge in MikroTik Switching
- Engineers who want to apply Spanning-Tree Protocol in their network
- Students who want to learn how MikroTik Switching Spanning-Tree protocol works
This lecture is an introduction of what I am going to explain in the upcoming video regarding problems with Switching Redundancy.
In this lecture, I am going to explain what are the problems that you will have in redundant switching if you don't apply the STP protocols. The main problems are:
Multiple frame copies received
MAC address instability
In this lecture, I will explain to you what are the different states that an interface on the MikroTik switch participating in the STP algorithm will have.
You will have a deep understanding on the follow states:
In this lecture, I am going to show you how you can make your Routerboards as switches by using Bridge interfaces and Hardware Offload, and how to add the physical interfaces to the Bridge.
Also I will show you how you can enable STP on your switches.
In the 2nd part of the LAB, I am going to show you on the graph which of the switches should be the root bridge and what are the port roles for each of the switch, then we compare that to the real switches and check if they are identical.
Then I am going to show you how long does it take when you remove a cable for the STP to re-converge the network again.
When you have 2 switches connected via a redundant way to each other via 2 ports, one of the switch will be the root bridge and the other the non-root bridge. The non-root bridge will have one of its port to be the Root Port and the 2nd port the Alternate. In this LAB, I will show you how the non-root bridge select which of its 2 ports become the Alternate and based on what he takes the decision, then I will show you how you can change this selection by using the port priority feature.
We have seen that in STP, for the port to go on Forwarding it has to pass via listening, learning until it goes into forwarding state. This takes up to 50 seconds in case the port is in a blocking state.
In RSTP there is no timers as in STP but instead there is a negotiation (synchronization) mechanism which makes the RSTP make the switch port goes much faster into forwarding state.
In this lecture, I will explain to you how this mechanism works in the RSTP,
In this lecture, I am going to do a LAB showing you to configure MSTP on MikroTik Switches.
This will include:
Setting the protocol mode to MSTP
Creating Region name and Region revision number of the 3 switches
Map the VLAN's to the right MSTI identifier
Change the root bridge election for the 2 different identifiers
By the end of this LAB, I am going to justify if the whole work has been done correctly.