Unit 1: Network Infrastructure
This will allow you to demonstrate your networking skills, knowledge, and abilities, with a focus on enterprise-level switching, routing, and multicast components that support cross-platform (inter)operability and integration with the most recent software-defined technologies.
Spanning Tree Protocol, or STP, is turned on by default on all switches. There are different Spanning Tree modes for both Cisco’s Proprietory and open standard STP.
Spanning Tree Modes: An IEEE Open Standard
The following IEEE STP standards are being utilized by all other vendors:-
Spanning Tree Protocol (STP) IEEE 802.1D – IEEE 802.1D, often known as the Spanning Tree Protocol (STP), was the first and original implementation of the standard for the Spanning Tree Protocol. Within the confines of the Local Area Network (LAN), a single instance of spanning tree should be permitted.
Rapid Spanning Tree Protocol (RSTP) IEEE 802.1w –This is an upgraded version of the 802.1D STP protocol known as the Rapid Spanning Tree Protocol (RSTP) IEEE 802.1w. This makes the process of the network converge more rapid. However, in the same way as 802.1D STP is restricted to a single instance, the Local Area Network (LAN) is only permitted to have a single instance of Spanning Tree.
Multiple Spanning Tree Protocol (MSTP) IEEE 802.1s – Our ability to generate many distinct spanning-tree instances, as well as the ability to map and assign multiple VLANs to those instances, is made possible by the Multiple Spanning Tree Protocol (MSTP) IEEE 802.1s.
Cisco Modes for Spanning Tree
We have the following Cisco-proprietory STP standards, which are only used by Cisco switches:
The Per VLAN Spanning Tree Plus (PVST+) Protocol: is an add-on that Cisco makes to IEEE 802.1D STP. It is the default form of spanning tree for Cisco switches. We can set up one instance of spanning-tree for each VLAN.
Rapid Per VLAN Spanning Tree Plus (RPVST+) Protocol: is an add-on to IEEE 802.1w RSTP that is only available from Cisco. Like PVST+, it lets us set up a single spanning-tree instance for each VLAN. With RPVST+, the network convergence is faster.
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